diff --git a/src/backend/hypothesisTest/HypothesisTest.cpp b/src/backend/hypothesisTest/HypothesisTest.cpp index a36437522..ecaf253f5 100644 --- a/src/backend/hypothesisTest/HypothesisTest.cpp +++ b/src/backend/hypothesisTest/HypothesisTest.cpp @@ -1,1303 +1,1299 @@ /*************************************************************************** File : HypothesisTest.cpp Project : LabPlot Description : Doing Hypothesis-Test on data provided -------------------------------------------------------------------- Copyright : (C) 2019 Devanshu Agarwal(agarwaldevanshu8@gmail.com) ***************************************************************************/ /*************************************************************************** * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 51 Franklin Street, Fifth Floor, * * Boston, MA 02110-1301 USA * * * ***************************************************************************/ #include "HypothesisTest.h" #include "HypothesisTestPrivate.h" #include "kdefrontend/hypothesisTest/HypothesisTestView.h" #include "backend/spreadsheet/Spreadsheet.h" #include "backend/core/column/Column.h" #include "backend/lib/macros.h" #include #include #include #include #include #include #include #include #include #include extern "C" { #include "backend/nsl/nsl_stats.h" } HypothesisTest::HypothesisTest(const QString &name) : AbstractPart(name), d(new HypothesisTestPrivate(this)) { } HypothesisTest::~HypothesisTest() { delete d; } void HypothesisTest::setDataSourceType(DataSourceType type) { if (type != d->dataSourceType) d->dataSourceType = type; } HypothesisTest::DataSourceType HypothesisTest::dataSourceType() const { return d->dataSourceType; } void HypothesisTest::setDataSourceSpreadsheet(Spreadsheet* spreadsheet) { if (spreadsheet != d->dataSourceSpreadsheet) d->setDataSourceSpreadsheet(spreadsheet); } void HypothesisTest::setColumns(const QVector& cols) { d->columns = cols; } void HypothesisTest::setColumns(QStringList cols) { return d->setColumns(cols); } QStringList HypothesisTest::allColumns() { return d->allColumns; } void HypothesisTest::setPopulationMean(QVariant populationMean) { d->populationMean = populationMean.toDouble(); } void HypothesisTest::setSignificanceLevel(QVariant alpha) { d->significanceLevel = alpha.toDouble(); } QString HypothesisTest::testName() { return d->currTestName; } QString HypothesisTest::statsTable() { return d->statsTable; } void HypothesisTest::performTest(Test test, bool categoricalVariable, bool equalVariance) { d->tailType = test.tail; switch (test.subtype) { case HypothesisTest::Test::SubType::TwoSampleIndependent: { d->currTestName = i18n( "

Two Sample Independent Test

"); d->performTwoSampleIndependentTest(test.type, categoricalVariable, equalVariance); break; } case HypothesisTest::Test::SubType::TwoSamplePaired: d->currTestName = i18n( "

Two Sample Paired Test

"); d->performTwoSamplePairedTest(test.type); break; case HypothesisTest::Test::SubType::OneSample: { d->currTestName = i18n( "

One Sample Test

"); d->performOneSampleTest(test.type); break; } case HypothesisTest::Test::SubType::OneWay: { d->currTestName = i18n( "

One Way Anova

"); d->performOneWayAnova(); break; } case HypothesisTest::Test::SubType::TwoWay: - break; case HypothesisTest::Test::SubType::NoneSubType: break; } emit changed(); } void HypothesisTest::performLeveneTest(bool categoricalVariable) { d->currTestName = i18n( "

Levene Test for Equality of Variance

"); d->performLeveneTest(categoricalVariable); emit changed(); } double HypothesisTest::statisticValue() { return d->statisticValue; } double HypothesisTest::pValue() { return d->pValue; } QVBoxLayout* HypothesisTest::summaryLayout() { return d->summaryLayout; } /****************************************************************************** * Private Implementations * ****************************************************************************/ //TODO: backend of z test; //TODO: add tooltip to tables. (currently it is not possible to use with QTextDocument); HypothesisTestPrivate::HypothesisTestPrivate(HypothesisTest* owner) : q(owner), summaryLayout(new QVBoxLayout()) { for (int i = 0; i < 10; i++) { resultLine[i] = new QLabel(); summaryLayout->addWidget(resultLine[i]); } } HypothesisTestPrivate::~HypothesisTestPrivate() { } void HypothesisTestPrivate::setDataSourceSpreadsheet(Spreadsheet* spreadsheet) { dataSourceSpreadsheet = spreadsheet; //setting rows and columns count; rowCount = dataSourceSpreadsheet->rowCount(); columnCount = dataSourceSpreadsheet->columnCount(); for (auto* col : dataSourceSpreadsheet->children()) allColumns << col->name(); } void HypothesisTestPrivate::setColumns(QStringList cols) { columns.clear(); Column* column = new Column("column"); for (QString col : cols) { if (!cols.isEmpty()) { column = dataSourceSpreadsheet->column(col); columns.append(column); } } delete[] column; } /**************************Two Sample Independent *************************************/ void HypothesisTestPrivate::performTwoSampleIndependentTest(HypothesisTest::Test::Type test, bool categoricalVariable, bool equalVariance) { clearTestView(); if (columns.size() != 2) { printError("Inappropriate number of columns selected"); return; } int n[2]; double sum[2], mean[2], std[2]; QString col1Name = columns[0]->name(); QString col2Name = columns[1]->name(); if (!categoricalVariable && isNumericOrInteger(columns[0])) { for (int i = 0; i < 2; i++) { findStats(columns[i], n[i], sum[i], mean[i], std[i]); if (n[i] == 0) { printError("Atleast two values should be there in every column"); return; } if (std[i] == 0) { printError( i18n("Standard Deviation of atleast one column is equal to 0: last column is: %1", columns[i]->name())); return; } } } else { QMap colName; QString baseColName; int np; int totalRows; countPartitions(columns[0], np, totalRows); if (np != 2) { printError( i18n("Number of Categorical Variable in Column %1 is not equal to 2", columns[0]->name())); return; } if (isNumericOrInteger(columns[0])) baseColName = columns[0]->name(); ErrorType errorCode = findStatsCategorical(columns[0], columns[1], n, sum, mean, std, colName, np, totalRows); switch (errorCode) { case ErrorUnqualSize: { printError( i18n("Unequal size between Column %1 and Column %2", columns[0]->name(), columns[1]->name())); return; } case ErrorEmptyColumn: { printError("At least one of selected column is empty"); return; } case NoError: break; } QMapIterator i(colName); while (i.hasNext()) { i.next(); if (i.value() == 1) col1Name = baseColName + " " + i.key(); else col2Name = baseColName + " " + i.key(); } } QVariant rowMajor[] = {"", "N", "Sum", "Mean", "Std", col1Name, n[0], sum[0], mean[0], std[0], col2Name, n[1], sum[1], mean[1], std[1] }; statsTable = getHtmlTable(3, 5, rowMajor); for (int i = 0; i < 2; i++) { if (n[i] == 0) { printError("Atleast two values should be there in every column"); return; } if (std[i] == 0) { printError( i18n("Standard Deviation of atleast one column is equal to 0: last column is: %1", columns[i]->name())); return; } } QString testName; int df = 0; double sp = 0; switch (test) { case HypothesisTest::Test::Type::TTest: { testName = "T"; if (equalVariance) { df = n[0] + n[1] - 2; sp = qSqrt(((n[0]-1) * gsl_pow_2(std[0]) + (n[1]-1) * gsl_pow_2(std[1]) ) / df ); statisticValue = (mean[0] - mean[1]) / (sp * qSqrt(1.0/n[0] + 1.0/n[1])); printLine(9, "Assumption: Equal Variance b/w both population means"); } else { double temp_val; temp_val = gsl_pow_2( gsl_pow_2(std[0]) / n[0] + gsl_pow_2(std[1]) / n[1]); temp_val = temp_val / ( (gsl_pow_2( (gsl_pow_2(std[0]) / n[0]) ) / (n[0]-1)) + (gsl_pow_2( (gsl_pow_2(std[1]) / n[1]) ) / (n[1]-1))); df = qRound(temp_val); statisticValue = (mean[0] - mean[1]) / (qSqrt( (gsl_pow_2(std[0])/n[0]) + (gsl_pow_2(std[1])/n[1]))); printLine(9, "Assumption: UnEqual Variance b/w both population means"); } printLine(8, "Assumption: Both Populations approximately follow normal distribution"); break; } case HypothesisTest::Test::Type::ZTest: { testName = "Z"; sp = qSqrt( ((n[0]-1) * gsl_pow_2(std[0]) + (n[1]-1) * gsl_pow_2(std[1])) / df); statisticValue = (mean[0] - mean[1]) / (sp * qSqrt( 1.0 / n[0] + 1.0 / n[1])); pValue = gsl_cdf_gaussian_P(statisticValue, sp); break; } case HypothesisTest::Test::Type::Anova: - break; case HypothesisTest::Test::Type::NoneType: break; } currTestName = i18n( "

Two Sample Independent %1 Test for %2 vs %3

", testName, col1Name, col2Name); pValue = getPValue(test, statisticValue, col1Name, col2Name, (mean[0] - mean[1]), sp, df); printLine(2, i18n("Significance level is %1", round(significanceLevel)), "blue"); printLine(4, i18n("%1 Value is %2 ", testName, round(statisticValue)), "green"); printTooltip(4, i18n("More is the |%1-value|, more safely we can reject the null hypothesis", testName)); printLine(5, i18n("P Value is %1 ", pValue), "green"); printLine(6, i18n("Degree of Freedom is %1", df), "green"); printTooltip(6, i18n("Number of independent Pieces of information that went into calculating the estimate")); if (pValue <= significanceLevel) printTooltip(5, i18n("We can safely reject Null Hypothesis for significance level %1", round(significanceLevel))); else printTooltip(5, i18n("There is a plausibility for Null Hypothesis to be true")); return; } /********************************Two Sample Paired ***************************************/ void HypothesisTestPrivate::performTwoSamplePairedTest(HypothesisTest::Test::Type test) { clearTestView(); if (columns.size() != 2) { printError("Inappropriate number of columns selected"); return; } for (int i = 0; i < 2; i++) { if ( !isNumericOrInteger(columns[0])) { printError("select only columns with numbers"); return; } } int n; double sum, mean, std; ErrorType errorCode = findStatsPaired(columns[0], columns[1], n, sum, mean, std); switch (errorCode) { case ErrorUnqualSize: { printError("both columns are having different sizes"); return; } case ErrorEmptyColumn: { printError("columns are empty"); return; } case NoError: break; } QVariant rowMajor[] = {"", "N", "Sum", "Mean", "Std", "difference", n, sum, mean, std }; statsTable = getHtmlTable(2, 5, rowMajor); if (std == 0) { printError("Standard deviation of the difference is 0"); return; } QString testName; int df = 0; switch (test) { case HypothesisTest::Test::Type::TTest: { statisticValue = mean / (std / qSqrt(n)); df = n - 1; testName = "T"; printLine(6, i18n("Degree of Freedom is %1name(), i18n("%1", populationMean), mean, std, df); currTestName = i18n( "

One Sample %1 Test for %2 vs %3

", testName, columns[0]->name(), columns[1]->name()); printLine(2, i18n("Significance level is %1 ", round(significanceLevel)), "blue"); printLine(4, i18n("%1 Value is %2 ", testName, round(statisticValue)), "green"); printLine(5, i18n("P Value is %1 ", pValue), "green"); if (pValue <= significanceLevel) printTooltip(5, i18n("We can safely reject Null Hypothesis for significance level %1", significanceLevel)); else printTooltip(5, i18n("There is a plausibility for Null Hypothesis to be true")); return; } /******************************** One Sample ***************************************/ void HypothesisTestPrivate::performOneSampleTest(HypothesisTest::Test::Type test) { clearTestView(); if (columns.size() != 1) { printError("Inappropriate number of columns selected"); return; } if ( !isNumericOrInteger(columns[0])) { printError("select only columns with numbers"); return; } int n; double sum, mean, std; ErrorType errorCode = findStats(columns[0], n, sum, mean, std); switch (errorCode) { case ErrorEmptyColumn: { printError("column is empty"); return; } case NoError: break; case ErrorUnqualSize: { return; } } QVariant rowMajor[] = {"", "N", "Sum", "Mean", "Std", columns[0]->name(), n, sum, mean, std }; statsTable = getHtmlTable(2, 5, rowMajor); if (std == 0) { printError("Standard deviation is 0"); return; } QString testName; int df = 0; switch (test) { case HypothesisTest::Test::Type::TTest: { testName = "T"; statisticValue = (mean - populationMean) / (std / qSqrt(n)); df = n - 1; printLine(6, i18n("Degree of Freedom is %1", df), "blue"); break; } case HypothesisTest::Test::Type::ZTest: { testName = "Z"; df = 0; statisticValue = (mean - populationMean) / (std / qSqrt(n)); break; } case HypothesisTest::Test::Type::Anova: - break; case HypothesisTest::Test::Type::NoneType: break; } pValue = getPValue(test, statisticValue, columns[0]->name(), i18n("%1",populationMean), mean - populationMean, std, df); currTestName = i18n( "

One Sample %1 Test for %2

", testName, columns[0]->name()); printLine(2, i18n("Significance level is %1", round(significanceLevel)), "blue"); printLine(4, i18n("%1 Value is %2", testName, round(statisticValue)), "green"); printLine(5, i18n("P Value is %1", pValue), "green"); if (pValue <= significanceLevel) printTooltip(5, i18n("We can safely reject Null Hypothesis for significance level %1", significanceLevel)); else printTooltip(5, i18n("There is a plausibility for Null Hypothesis to be true")); return; } /*************************************One Way Anova***************************************/ // all standard variables and formulas are taken from this wikipedia page: // https://en.wikipedia.org/wiki/One-way_analysis_of_variance // b stands for b/w groups // w stands for within groups // np is number of partition i.e., number of classes void HypothesisTestPrivate::performOneWayAnova() { clearTestView(); int np, totalRows; countPartitions(columns[0], np, totalRows); int* ni = new int[np]; double* sum = new double[np]; double* mean = new double[np]; double* std = new double[np]; QString* colNames = new QString[np]; QMap classnameToIndex; QString baseColName; if (isNumericOrInteger(columns[0])) baseColName = columns[0]->name(); findStatsCategorical(columns[0], columns[1], ni, sum, mean, std, classnameToIndex, np, totalRows); double yBar = 0; // overall mean double sB = 0; // sum of squares of (mean - overall_mean) between the groups int fB = 0; // degree of freedom between the groups double msB = 0; // mean sum of squares between the groups double sW = 0; // sum of squares of (value - mean of group) within the groups int fW = 0; // degree of freedom within the group double msW = 0; // mean sum of squares within the groups double fValue = 0; // now finding mean of each group; for (int i = 0; i < np; i++) yBar += mean[i]; yBar = yBar / np; for (int i = 0; i < np; i++) { sB += ni[i] * gsl_pow_2( ( mean[i] - yBar)); if (ni[i] > 1) sW += gsl_pow_2( std[i])*(ni[i] - 1); else sW += gsl_pow_2( std[i]); fW += ni[i] - 1; } fB = np - 1; msB = sB / fB; msW = sW / fW; fValue = msB / msW; pValue = nsl_stats_fdist_p(fValue, static_cast(np-1), fW); QMapIterator i(classnameToIndex); while (i.hasNext()) { i.next(); colNames[i.value()-1] = baseColName + " " + i.key(); } // now printing the statistics and result; int rowCount = np + 1, columnCount = 5; QVariant* rowMajor = new QVariant[rowCount*columnCount]; // header data; rowMajor[0] = ""; rowMajor[1] = "Ni"; rowMajor[2] = "Sum"; rowMajor[3] = "Mean"; rowMajor[4] = "Std"; // table data for (int row_i = 1; row_i < rowCount ; row_i++) { rowMajor[row_i*columnCount] = colNames[row_i - 1]; rowMajor[row_i*columnCount + 1] = ni[row_i - 1]; rowMajor[row_i*columnCount + 2] = sum[row_i - 1]; rowMajor[row_i*columnCount + 3] = mean[row_i - 1]; rowMajor[row_i*columnCount + 4] = std[row_i - 1]; } statsTable = i18n( "

Group Summary Statistics

"); statsTable += getHtmlTable(rowCount, columnCount, rowMajor); statsTable += getLine(""); statsTable += getLine(""); statsTable += i18n( "

Grand Summary Statistics

"); statsTable += getLine(""); statsTable += getLine(i18n("Overall Mean is %1", round(yBar))); rowCount = 4; columnCount = 3; rowMajor->clear(); rowMajor[0] = ""; rowMajor[1] = "Between Groups"; rowMajor[2] = "Within Groups"; int baseIndex = 0; baseIndex = 1 * columnCount; rowMajor[baseIndex + 0] = "Sum of Squares"; rowMajor[baseIndex + 1] = sB; rowMajor[baseIndex + 2] = sW; baseIndex = 2 * columnCount; rowMajor[baseIndex + 0] = "Degree of Freedom"; rowMajor[baseIndex + 1] = fB; rowMajor[baseIndex + 2] = fW; baseIndex = 3 * columnCount; rowMajor[baseIndex + 0] = "Mean Square Value"; rowMajor[baseIndex + 1] = msB; rowMajor[baseIndex + 2] = msW; statsTable += getHtmlTable(rowCount, columnCount, rowMajor); delete[] ni; delete[] sum; delete[] mean; delete[] std; delete[] colNames; printLine(1, i18n("F Value is %1", round(fValue)), "green"); printLine(2, i18n("P Value is %1 ", pValue), "green"); if (pValue <= significanceLevel) printTooltip(2, i18n("We can safely reject Null Hypothesis for significance level %1", significanceLevel)); else printTooltip(2, i18n("There is a plausibility for Null Hypothesis to be true")); return; } /**************************************Levene Test****************************************/ // Some reference to local variables. // np = number of partitions // df = degree of fredom // totalRows = total number of rows in column // these variables are taken from: https://en.wikipedia.org/wiki/Levene%27s_test // yiBar = mean of ith group; // Zij = |Yij - yiBar| // ziBar = mean of Zij for group i // ziBarBar = mean for all zij // ni = number of elements in group i void HypothesisTestPrivate::performLeveneTest(bool categoricalVariable) { clearTestView(); if (columns.size() != 2) { printError("Inappropriate number of columns selected"); return; } int np = 0; int n = 0; if (!categoricalVariable && isNumericOrInteger(columns[0])) np = columns.size(); else countPartitions(columns[0], np, n); if (np < 2) { printError("Select atleast two columns / classes"); return; } double* yiBar = new double[np]; double* ziBar = new double[np]; double ziBarBar = 0; double* ni = new double[np]; for (int i = 0; i < np; i++) { yiBar[i] = 0; ziBar[i] = 0; ni[i] = 0; } double fValue; int df = 0; int totalRows = 0; QString* colNames = new QString[np]; if (!categoricalVariable && isNumericOrInteger(columns[0])) { totalRows = columns[0]->rowCount(); double value = 0; for (int j = 0; j < totalRows; j++) { int numberNaNCols = 0; for (int i = 0; i < np; i++) { value = columns[i]->valueAt(j); if (std::isnan(value)) { numberNaNCols++; continue; } yiBar[i] += value; ni[i]++; n++; } if (numberNaNCols == np) { totalRows = j; break; } } for (int i = 0; i < np; i++) { if (ni[i] > 0) yiBar[i] = yiBar[i] / ni[i]; else { printError("One of the selected columns is empty"); return; } } for (int j = 0; j < totalRows; j++) { for (int i = 0; i < np; i++) { value = columns[i]->valueAt(j); if (!(std::isnan(value))) ziBar[i] += fabs(value - yiBar[i]); } } for (int i = 0; i < np; i++) { ziBarBar += ziBar[i]; if (ni[i] > 0) ziBar[i] = ziBar[i] / ni[i]; } ziBarBar = ziBarBar / n; double numberatorValue = 0; double denominatorValue = 0; for (int j = 0; j < totalRows; j++) { for (int i = 0; i < np; i++) { value = columns[i]->valueAt(j); if (!(std::isnan(value))) { double zij = fabs(value - yiBar[i]); denominatorValue += gsl_pow_2( (zij - ziBar[i])); } } } if (denominatorValue <= 0) { printError( i18n("Denominator value is %1", denominatorValue)); return; } for (int i = 0; i < np; i++) { colNames[i] = columns[i]->name(); numberatorValue += ni[i]*gsl_pow_2( (ziBar[i]-ziBarBar)); } fValue = ((n - np) / (np - 1)) * (numberatorValue / denominatorValue); } else { QMap classnameToIndex; AbstractColumn::ColumnMode originalColMode = columns[0]->columnMode(); columns[0]->setColumnMode(AbstractColumn::Text); int partitionNumber = 1; QString name; double value; int classIndex; for (int j = 0; j < n; j++) { name = columns[0]->textAt(j); value = columns[1]->valueAt(j); if (std::isnan(value)) { n = j; break; } if (classnameToIndex[name] == 0) { classnameToIndex[name] = partitionNumber; partitionNumber++; } classIndex = classnameToIndex[name]-1; ni[classIndex]++; yiBar[classIndex] += value; } for (int i = 0; i < np; i++) { if (ni[i] > 0) yiBar[i] = yiBar[i] / ni[i]; else { printError("One of the selected columns is empty"); return; } } for (int j = 0; j < n; j++) { name = columns[0]->textAt(j); value = columns[1]->valueAt(j); classIndex = classnameToIndex[name] - 1; ziBar[classIndex] += fabs(value - yiBar[classIndex]); } for (int i = 0; i < np; i++) { ziBarBar += ziBar[i]; ziBar[i] = ziBar[i] / ni[i]; } ziBarBar = ziBarBar / n; double numberatorValue = 0; double denominatorValue = 0; for (int j = 0; j < n; j++) { name = columns[0]->textAt(j); value = columns[1]->valueAt(j); classIndex = classnameToIndex[name] - 1; double zij = fabs(value - yiBar[classIndex]); denominatorValue += gsl_pow_2( (zij - ziBar[classIndex])); } for (int i = 0; i < np; i++) numberatorValue += ni[i]*gsl_pow_2( (ziBar[i]-ziBarBar)); if (denominatorValue <= 0) { printError( "number of data points is less or than equal to number of categorical variables"); return; } fValue = ((n - np) / (np - 1)) * (numberatorValue / denominatorValue); QMapIterator i(classnameToIndex); while (i.hasNext()) { i.next(); colNames[i.value()-1] = columns[0]->name() + " " + i.key(); } columns[0]->setColumnMode(originalColMode); } df = n - np; // now making the stats table. int rowCount = np+1; int columnCount = 4; QVariant* rowMajor = new QVariant[rowCount*columnCount]; // header data; rowMajor[0] = ""; rowMajor[1] = "Ni"; rowMajor[2] = "yiBar"; rowMajor[3] = "ziBar"; // table data for (int row_i = 1; row_i < rowCount; row_i++) { rowMajor[row_i*columnCount] = colNames[row_i-1]; rowMajor[row_i*columnCount + 1] = ni[row_i-1]; rowMajor[row_i*columnCount + 2] = yiBar[row_i-1]; rowMajor[row_i*columnCount + 3] = ziBar[row_i-1]; } statsTable = getHtmlTable(rowCount, columnCount, rowMajor); delete[] rowMajor; delete[] yiBar; delete[] ziBar; delete[] ni; pValue = nsl_stats_fdist_p(fValue, static_cast(np-1), df); printLine(0, "Null Hypothesis: Variance is equal between all classes", "blue"); printLine(1, "Alternate Hypothesis: Variance is not equal in at-least one pair of classes", "blue"); printLine(2, i18n("Significance level is %1", round(significanceLevel)), "blue"); printLine(4, i18n("F Value is %1 ", round(fValue)), "green"); printLine(5, i18n("P Value is %1 ", pValue), "green"); printLine(6, i18n("Degree of Freedom is %1", df), "green"); if (pValue <= significanceLevel) { printTooltip(5, i18n("We can safely reject Null Hypothesis for significance level %1", significanceLevel)); printLine(8, "Requirement for homogeneity is not met", "red"); } else { printTooltip(5, i18n("There is a plausibility for Null Hypothesis to be true")); printLine(8, "Requirement for homogeneity is met", "green"); } return; } /***************************************Helper Functions*************************************/ QString HypothesisTestPrivate::round(QVariant number, int precision) { if (number.userType() == QMetaType::Double || number.userType() == QMetaType::Float) { double multiplierPrecision = qPow(10, precision); int tempNum = number.toDouble()*multiplierPrecision*10; if (tempNum % 10 < 5) return QString::number((tempNum/10) / multiplierPrecision); else return QString::number((tempNum/10 + 1) / multiplierPrecision); } return number.toString(); } bool HypothesisTestPrivate::isNumericOrInteger(Column* column) { return (column->columnMode() == AbstractColumn::Numeric || column->columnMode() == AbstractColumn::Integer); } HypothesisTestPrivate::ErrorType HypothesisTestPrivate::findStats(const Column* column, int& count, double& sum, double& mean, double& std) { sum = 0; mean = 0; std = 0; count = column->rowCount(); for (int i = 0; i < count; i++) { double row = column->valueAt(i); if ( std::isnan(row)) { count = i; break; } sum += row; } if (count < 1) return HypothesisTestPrivate::ErrorEmptyColumn; mean = sum / count; for (int i = 0; i < count; i++) { double row = column->valueAt(i); std += gsl_pow_2( (row - mean)); } if (count > 1) std = std / (count-1); std = qSqrt(std); return HypothesisTestPrivate::NoError; } HypothesisTestPrivate::ErrorType HypothesisTestPrivate::findStatsPaired(const Column* column1, const Column* column2, int& count, double& sum, double& mean, double& std) { sum = 0; mean = 0; std = 0; int count1 = column1->rowCount(); int count2 = column2->rowCount(); count = qMin(count1, count2); double cell1, cell2; for (int i = 0; i < count; i++) { cell1 = column1->valueAt(i); cell2 = column2->valueAt(i); if (std::isnan(cell1) || std::isnan(cell2)) { if (std::isnan(cell1) && std::isnan(cell2)) count = i; else return HypothesisTestPrivate::ErrorUnqualSize; break; } sum += cell1 - cell2; } if (count < 1) return HypothesisTestPrivate::ErrorEmptyColumn; mean = sum / count; double row; for (int i = 0; i < count; i++) { cell1 = column1->valueAt(i); cell2 = column2->valueAt(i); row = cell1 - cell2; std += gsl_pow_2( (row - mean)); } if (count > 1) std = std / (count-1); std = qSqrt(std); return HypothesisTestPrivate::NoError; } void HypothesisTestPrivate::countPartitions(Column* column, int& np, int& totalRows) { totalRows = column->rowCount(); np = 0; QString cellValue; QMap discoveredCategoricalVar; AbstractColumn::ColumnMode originalColMode = column->columnMode(); column->setColumnMode(AbstractColumn::Text); for (int i = 0; i < totalRows; i++) { cellValue = column->textAt(i); if (cellValue.isEmpty()) { totalRows = i; break; } if (discoveredCategoricalVar[cellValue]) continue; discoveredCategoricalVar[cellValue] = true; np++; } column->setColumnMode(originalColMode); } HypothesisTestPrivate::ErrorType HypothesisTestPrivate::findStatsCategorical(Column* column1, Column* column2, int n[], double sum[], double mean[], double std[], QMap& colName, const int& np, const int& totalRows) { Column* columns[] = {column1, column2}; for (int i = 0; i < np; i++) { n[i] = 0; sum[i] = 0; mean[i] = 0; std[i] = 0; } AbstractColumn::ColumnMode originalColMode = columns[0]->columnMode(); columns[0]->setColumnMode(AbstractColumn::Text); int partitionNumber = 1; for (int i = 0; i < totalRows; i++) { QString name = columns[0]->textAt(i); double value = columns[1]->valueAt(i); if (std::isnan(value)) { columns[0]->setColumnMode(originalColMode); return HypothesisTestPrivate::ErrorUnqualSize; } if (colName[name] == 0) { colName[name] = partitionNumber; partitionNumber++; } n[colName[name]-1]++; sum[colName[name]-1] += value; } for (int i = 0; i < np; i++) mean[i] = sum[i] / n[i]; for (int i = 0; i < totalRows; i++) { QString name = columns[0]->textAt(i); double value = columns[1]->valueAt(i); std[colName[name]-1] += gsl_pow_2( (value - mean[colName[name]-1])); } for (int i = 0; i < np; i++) { if (n[i] > 1) std[i] = std[i] / (n[i] - 1); std[i] = qSqrt(std[i]); } columns[0]->setColumnMode(originalColMode); if (isNumericOrInteger(columns[0])) { } return HypothesisTestPrivate::NoError; } //TODO change ("⋖") symbol to ("<"), currently macro UTF8_QSTRING is not working properly if used "<" symbol; // TODO: check for correctness between: for TestZ with TailTwo // pValue = 2*gsl_cdf_tdist_P(value, df) v/s // pValue = gsl_cdf_tdis_P(value, df) + gsl_cdf_tdis_P(-value, df); double HypothesisTestPrivate::getPValue(const HypothesisTest::Test::Type& test, double& value, const QString& col1Name, const QString& col2Name, const double mean, const double sp, const int df) { switch (test) { case HypothesisTest::Test::Type::TTest: { switch (tailType) { case HypothesisTest::Test::Tail::Negative: { pValue = gsl_cdf_tdist_P(value, df); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING("≥"), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING("⋖"), col2Name), "blue"); break; } case HypothesisTest::Test::Tail::Positive: { value *= -1; pValue = gsl_cdf_tdist_P(value, df); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING("≤"), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING(">"), col2Name), "blue"); break; } case HypothesisTest::Test::Tail::Two: { pValue = 2.*gsl_cdf_tdist_P(-fabs(value), df); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING("="), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3", col1Name, UTF8_QSTRING("≠"), col2Name), "blue"); break; } } break; } case HypothesisTest::Test::Type::ZTest: { switch (tailType) { case HypothesisTest::Test::Tail::Negative: { pValue = gsl_cdf_gaussian_P(value - mean, sp); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING("≥"), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING("⋖"), col2Name), "blue"); break; } case HypothesisTest::Test::Tail::Positive: { value *= -1; pValue = nsl_stats_tdist_p(value - mean, sp); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING("≤"), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING(">"), col2Name), "blue"); break; } case HypothesisTest::Test::Tail::Two: { pValue = 2.*gsl_cdf_gaussian_P(value - mean, sp); printLine(0, i18n("Null Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING("="), col2Name), "blue"); printLine(1, i18n("Alternate Hypothesis: Population mean of %1 %2 Population mean of %3 ", col1Name, UTF8_QSTRING("≠"), col2Name), "blue"); break; } } break; } case HypothesisTest::Test::Type::Anova: - break; case HypothesisTest::Test::Type::NoneType: break; } if (pValue > 1) return 1; return pValue; } QString HypothesisTestPrivate::getHtmlTable(int row, int column, QVariant* rowMajor) { if (row < 1 || column < 1) return QString(); QString table; table = "" "" " "; QString bg = "tg-0pky"; bool pky = true; QString element; table += " "; for (int j = 0; j < column; j++) { element = rowMajor[j].toString(); table += i18n(" ", bg, element); } table += " "; if (pky) bg = "tg-0pky"; else bg = "tg-btxf"; pky = !pky; for (int i = 1; i < row; i++) { table += " "; QString element = round(rowMajor[i*column]); table += i18n(" ", bg, element); for (int j = 1; j < column; j++) { element = round(rowMajor[i*column+j]); table += i18n(" ", bg, element); } table += " "; if (pky) bg = "tg-0pky"; else bg = "tg-btxf"; pky = !pky; } table += "
%2
%2%2
"; return table; } QString HypothesisTestPrivate::getLine(const QString& msg, const QString& color) { return i18n("

%2

", color, msg); } void HypothesisTestPrivate::printLine(const int& index, const QString& msg, const QString& color) { if (index < 0 || index >= 10) return; resultLine[index]->setText(getLine(msg, color)); return; } void HypothesisTestPrivate::printTooltip(const int &index, const QString &msg) { if (index < 0 || index >= 10) return; resultLine[index]->setToolTip(i18n("%1", msg)); } void HypothesisTestPrivate::printError(const QString& errorMsg) { printLine(0, errorMsg, "red"); } void HypothesisTestPrivate::clearSummaryLayout() { for (int i = 0; i < 10; i++) resultLine[i]->clear(); } void HypothesisTestPrivate::clearTestView() { statsTable = ""; clearSummaryLayout(); } /********************************************************************************** * virtual functions implementations * ********************************************************************************/ /*! Saves as XML. */ void HypothesisTest::save(QXmlStreamWriter* writer) const { writer->writeStartElement("hypothesisTest"); writeBasicAttributes(writer); writeCommentElement(writer); writer->writeEndElement(); } /*! Loads from XML. */ bool HypothesisTest::load(XmlStreamReader* reader, bool preview) { Q_UNUSED(preview); if (!readBasicAttributes(reader)) return false; return !reader->hasError(); } Spreadsheet *HypothesisTest::dataSourceSpreadsheet() const { return d->dataSourceSpreadsheet; } bool HypothesisTest::exportView() const { return true; } bool HypothesisTest::printView() { return true; } bool HypothesisTest::printPreview() const { return true; } /*! Constructs a primary view on me. This method may be called multiple times during the life time of an Aspect, or it might not get called at all. Aspects must not depend on the existence of a view for their operation. */ QWidget* HypothesisTest::view() const { if (!m_partView) { m_view = new HypothesisTestView(const_cast(this)); m_partView = m_view; } return m_partView; } /*! Returns a new context menu. The caller takes ownership of the menu. */ QMenu* HypothesisTest::createContextMenu() { QMenu* menu = AbstractPart::createContextMenu(); // Q_ASSERT(menu); // emit requestProjectContextMenu(menu); return menu; } diff --git a/src/kdefrontend/dockwidgets/HypothesisTestDock.cpp b/src/kdefrontend/dockwidgets/HypothesisTestDock.cpp index 26ec27b83..2a2ce931c 100644 --- a/src/kdefrontend/dockwidgets/HypothesisTestDock.cpp +++ b/src/kdefrontend/dockwidgets/HypothesisTestDock.cpp @@ -1,829 +1,878 @@ /*************************************************************************** File : HypothesisTestDock.cpp Project : LabPlot Description : widget for hypothesis test properties -------------------------------------------------------------------- Copyright : (C) 2019 Devanshu Agarwal(agarwaldevanshu8@gmail.com) ***************************************************************************/ /*************************************************************************** * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 51 Franklin Street, Fifth Floor, * * Boston, MA 02110-1301 USA * * * ***************************************************************************/ #include "HypothesisTestDock.h" #include "backend/core/AspectTreeModel.h" #include "backend/core/AbstractAspect.h" #include "backend/core/Project.h" #include "backend/spreadsheet/Spreadsheet.h" #include "commonfrontend/widgets/TreeViewComboBox.h" #include "kdefrontend/datasources/DatabaseManagerDialog.h" #include "kdefrontend/datasources/DatabaseManagerWidget.h" -//#include "kdefrontend/pivot/hypothesisTestView.h" #include "kdefrontend/TemplateHandler.h" #include #include #include #include #include #include #include #include /*! \class HypothesisTestDock \brief Provides a dock (widget) for hypothesis testing: \ingroup kdefrontend */ //TODO: To add tooltips in docks for non obvious widgets. //TODO: Add functionality for database along with spreadsheet. HypothesisTestDock::HypothesisTestDock(QWidget* parent) : QWidget(parent) { //QDEBUG("in hypothesis test constructor "); ui.setupUi(this); ui.cbDataSourceType->addItem(i18n("Spreadsheet")); ui.cbDataSourceType->addItem(i18n("Database")); cbSpreadsheet = new TreeViewComboBox; ui.gridLayout->addWidget(cbSpreadsheet, 5, 4, 1, 3); ui.bDatabaseManager->setIcon(QIcon::fromTheme("network-server-database")); ui.bDatabaseManager->setToolTip(i18n("Manage connections")); m_configPath = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation).constFirst() + "sql_connections"; // adding item to tests and testtype combo box; ui.cbTest->addItem( i18n("T Test"), HypothesisTest::Test::Type::TTest); ui.cbTest->addItem( i18n("Z Test"), HypothesisTest::Test::Type::ZTest); ui.cbTest->addItem( i18n("ANOVA"), HypothesisTest::Test::Type::Anova); ui.lPopulationSigma->setText( UTF8_QSTRING("σ")); // making all test blocks invisible at starting. ui.pbLeveneTest->hide(); ui.lCategorical->hide(); ui.chbCategorical->hide(); ui.lCol1->hide(); ui.cbCol1->hide(); ui.lCol2->hide(); ui.cbCol2->hide(); ui.lCol3->hide(); ui.cbCol3->hide(); ui.lEqualVariance->hide(); ui.chbEqualVariance->hide(); ui.chbEqualVariance->setChecked(true); ui.lPopulationSigma->hide(); ui.lPopulationSigma->setToolTip( i18n("Sigma of Population

" "Hint: Z-Test if preffered over T-Test if this is known")); ui.chbPopulationSigma->hide(); ui.lePopulationSigma->hide(); ui.pbPerformTest->setEnabled(false); ui.rbH1OneTail2->hide(); ui.rbH1OneTail1->hide(); ui.rbH1TwoTail->hide(); ui.rbH0OneTail1->hide(); ui.rbH0OneTail2->hide(); ui.rbH0TwoTail->hide(); ui.lH0->hide(); ui.lH1->hide(); QString mu = UTF8_QSTRING("μ"); QString mu0 = UTF8_QSTRING("μₒ"); // radio button for null and alternate hypothesis // for alternative hypothesis (h1) // one_tail_1 is mu > mu0; one_tail_2 is mu < mu0; two_tail = mu != mu0; ui.rbH1OneTail1->setText( i18n("%1 %2 %3", mu, UTF8_QSTRING(">"), mu0)); ui.rbH1OneTail2->setText( i18n("%1 %2 %3", mu, UTF8_QSTRING("<"), mu0)); ui.rbH1TwoTail->setText( i18n("%1 %2 %3", mu, UTF8_QSTRING("≠"), mu0)); ui.rbH0OneTail1->setText( i18n("%1 %2 %3",mu, UTF8_QSTRING("≤"), mu0)); ui.rbH0OneTail2->setText( i18n("%1 %2 %3", mu, UTF8_QSTRING("≥"), mu0)); ui.rbH0TwoTail->setText( i18n("%1 %2 %3", mu, UTF8_QSTRING("="), mu0)); ui.rbH0TwoTail->setEnabled(false); ui.rbH0OneTail1->setEnabled(false); ui.rbH0OneTail2->setEnabled(false); // setting muo and alpha buttons ui.lMuo->setText( i18n("%1", mu0)); ui.lAlpha->setText( i18n("%1", UTF8_QSTRING("α"))); ui.leMuo->setText( i18n("%1", m_populationMean)); ui.leAlpha->setText( i18n("%1", m_significanceLevel)); ui.lMuo->hide(); ui.lMuo->setToolTip( i18n("Population Mean")); ui.lAlpha->hide(); ui.lAlpha->setToolTip( i18n("Significance Level")); ui.leMuo->hide(); ui.leAlpha->hide(); ui.pbPerformTest->setIcon(QIcon::fromTheme("run-build")); ui.leMuo->setText( i18n("%1", m_populationMean)); ui.leAlpha->setText( i18n("%1", m_significanceLevel)); // readConnections(); // auto* style = ui.bAddRow->style(); // ui.bAddRow->setIcon(style->standardIcon(QStyle::SP_ArrowRight)); // ui.bAddRow->setToolTip(i18n("Add the selected field to rows")); // ui.bRemoveRow->setIcon(style->standardIcon(QStyle::SP_ArrowLeft)); // ui.bRemoveRow->setToolTip(i18n("Remove the selected field from rows")); // ui.bAddColumn->setIcon(style->standardIcon(QStyle::SP_ArrowRight)); // ui.bAddColumn->setToolTip(i18n("Add the selected field to columns")); // ui.bRemoveColumn->setIcon(style->standardIcon(QStyle::SP_ArrowLeft)); // ui.bRemoveColumn->setToolTip(i18n("Remove the selected field from columns")); // //add/remove buttons only enabled if something was selected // ui.bAddRow->setEnabled(false); // ui.bRemoveRow->setEnabled(false); // ui.bAddColumn->setEnabled(false); // ui.bRemoveColumn->setEnabled(false); // connect(ui.leName, &QLineEdit::textChanged, this, &HypothesisTestDock::nameChanged); // connect(ui.leComment, &QLineEdit::textChanged, this, &HypothesisTestDock::commentChanged); connect(ui.cbDataSourceType, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::dataSourceTypeChanged); connect(cbSpreadsheet, &TreeViewComboBox::currentModelIndexChanged, this, &HypothesisTestDock::spreadsheetChanged); // connect(ui.cbConnection, static_cast(&QComboBox::currentIndexChanged), // this, &HypothesisTestDock::connectionChanged); // connect(ui.cbTable, static_cast(&QComboBox::currentIndexChanged), // this, &HypothesisTestDock::tableChanged); // connect(ui.bDatabaseManager, &QPushButton::clicked, this, &HypothesisTestDock::showDatabaseManager); // connect(ui.bAddRow, &QPushButton::clicked, this, &HypothesisTestDock::addRow); // connect(ui.bRemoveRow, &QPushButton::clicked, this,&HypothesisTestDock::removeRow); // connect(ui.bAddColumn, &QPushButton::clicked, this, &HypothesisTestDock::addColumn); // connect(ui.bRemoveColumn, &QPushButton::clicked, this,&HypothesisTestDock::removeColumn); // connect(ui.cbCol1, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::doTTest); // connect(ui.cbCol2, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::doTTest); // connect(ui.lwFields, &QListWidget::itemSelectionChanged, this, [=]() { // bool enabled = !ui.lwFields->selectedItems().isEmpty(); // ui.bAddRow->setEnabled(enabled); // ui.bAddColumn->setEnabled(enabled); // }); // connect(ui.lwRows, &QListWidget::doubleClicked, this,&HypothesisTestDock::removeRow); // connect(ui.lwRows, &QListWidget::itemSelectionChanged, this, [=]() { // ui.bRemoveRow->setEnabled(!ui.lwRows->selectedItems().isEmpty()); // }); // connect(ui.lwColumns, &QListWidget::doubleClicked, this,&HypothesisTestDock::removeColumn); // connect(ui.lwColumns, &QListWidget::itemSelectionChanged, this, [=]() { // ui.bRemoveColumn->setEnabled(!ui.lwColumns->selectedItems().isEmpty()); // }); connect(ui.cbTest, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::showTestType); connect(ui.cbTestType, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::showHypothesisTest); // connect(ui.cbTest, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::showHypothesisTest); // connect(ui.cbTestType, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::showHypothesisTest); connect(ui.pbPerformTest, &QPushButton::clicked, this, &HypothesisTestDock::doHypothesisTest); connect(ui.pbLeveneTest, &QPushButton::clicked, this, &HypothesisTestDock::performLeveneTest); //connecting null hypothesis and alternate hypothesis radio button connect(ui.rbH1OneTail1, &QRadioButton::toggled, this, &HypothesisTestDock::onRbH1OneTail1Toggled); connect(ui.rbH1OneTail2, &QRadioButton::toggled, this, &HypothesisTestDock::onRbH1OneTail2Toggled); connect(ui.rbH1TwoTail, &QRadioButton::toggled, this, &HypothesisTestDock::onRbH1TwoTailToggled); connect(ui.cbCol1, static_cast(&QComboBox::currentIndexChanged), this, &HypothesisTestDock::col1IndexChanged); connect(ui.chbCategorical, &QCheckBox::stateChanged, this, &HypothesisTestDock::changeCbCol2Label); connect(ui.chbPopulationSigma, &QCheckBox::stateChanged, this, &HypothesisTestDock::chbPopulationSigmaStateChanged); // // ui.rbH1OneTail1->setChecked(true); // ui.rbH1TwoTail->setChecked(true); } void HypothesisTestDock::setHypothesisTest(HypothesisTest* HypothesisTest) { //QDEBUG("in set hypothesis test"); m_initializing = true; m_hypothesisTest = HypothesisTest; m_aspectTreeModel = new AspectTreeModel(m_hypothesisTest->project()); QList list{AspectType::Folder, AspectType::Workbook, AspectType::Spreadsheet, AspectType::LiveDataSource}; cbSpreadsheet->setTopLevelClasses(list); list = {AspectType::Spreadsheet, AspectType::LiveDataSource}; m_aspectTreeModel->setSelectableAspects(list); cbSpreadsheet->setModel(m_aspectTreeModel); //show the properties ui.leName->setText(m_hypothesisTest->name()); ui.leComment->setText(m_hypothesisTest->comment()); ui.cbDataSourceType->setCurrentIndex(m_hypothesisTest->dataSourceType()); if (m_hypothesisTest->dataSourceType() == HypothesisTest::DataSourceType::DataSourceSpreadsheet) setModelIndexFromAspect(cbSpreadsheet, m_hypothesisTest->dataSourceSpreadsheet()); // else // ui.cbConnection->setCurrentIndex(ui.cbConnection->findText(m_hypothesisTest->dataSourceConnection())); setColumnsComboBoxModel(m_hypothesisTest->dataSourceSpreadsheet()); this->dataSourceTypeChanged(ui.cbDataSourceType->currentIndex()); //setting rows and columns in combo box; //undo functions // connect(m_hypothesisTest, SIGNAL(aspectDescriptionChanged(const AbstractAspect*)), this, SLOT(hypothesisTestDescriptionChanged(const AbstractAspect*))); m_initializing = false; } void HypothesisTestDock::showTestType() { //QDEBUG("in show test type"); m_test.type = HypothesisTest::Test::Type(ui.cbTest->currentData().toInt()); ui.cbTestType->clear(); if (m_test.type & (HypothesisTest::Test::Type::TTest | HypothesisTest::Test::Type::ZTest)) { ui.cbTestType->addItem( i18n("Two Sample Independent"), HypothesisTest::Test::SubType::TwoSampleIndependent); ui.cbTestType->addItem( i18n("Two Sample Paired"), HypothesisTest::Test::SubType::TwoSamplePaired); ui.cbTestType->addItem( i18n("One Sample"), HypothesisTest::Test::SubType::OneSample); } else if (m_test.type & HypothesisTest::Test::Type::Anova) { ui.cbTestType->addItem( i18n("One Way"), HypothesisTest::Test::SubType::OneWay); ui.cbTestType->addItem( i18n("Two Way"), HypothesisTest::Test::SubType::TwoWay); } } void HypothesisTestDock::showHypothesisTest() { //QDEBUG("in showHypothesisTest"); if (ui.cbTestType->count() == 0) return; m_test.subtype = HypothesisTest::Test::SubType(ui.cbTestType->currentData().toInt()); ui.lCol1->show(); ui.cbCol1->show(); ui.lCol2->setVisible(bool(m_test.subtype & (~HypothesisTest::Test::SubType::OneSample))); ui.cbCol2->setVisible(bool(m_test.subtype & (~HypothesisTest::Test::SubType::OneSample))); + ui.lCol3->setVisible(bool(m_test.type & (HypothesisTest::Test::Anova) & + setAllBits(m_test.subtype & HypothesisTest::Test::SubType::TwoWay))); + ui.cbCol3->setVisible(bool(m_test.type & (HypothesisTest::Test::Anova) & + setAllBits(m_test.subtype & HypothesisTest::Test::SubType::TwoWay))); + ui.lEqualVariance->setVisible(bool( (m_test.type & HypothesisTest::Test::Type::TTest) & (m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent))); ui.chbEqualVariance->setVisible(bool( (m_test.type & HypothesisTest::Test::Type::TTest) & (m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent))); ui.lCategorical->setVisible(bool((m_test.type & HypothesisTest::Test::Type::TTest) & (m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent))); ui.chbCategorical->setVisible(bool((m_test.type & HypothesisTest::Test::Type::TTest) & (m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent))); ui.chbEqualVariance->setChecked(true); ui.lPopulationSigma->setVisible(bool((m_test.type & (HypothesisTest::Test::Type::TTest | HypothesisTest::Test::Type::ZTest)) & ~(setAllBits(m_test.subtype & HypothesisTest::Test::SubType::OneSample)))); ui.chbPopulationSigma->setVisible(bool((m_test.type & (HypothesisTest::Test::Type::TTest | HypothesisTest::Test::Type::ZTest)) & ~(setAllBits(m_test.subtype & HypothesisTest::Test::SubType::OneSample)))); ui.chbPopulationSigma->setChecked(false); - - ui.pbLeveneTest->setVisible(bool((m_test.type & (HypothesisTest::Test::Type::Anova | - HypothesisTest::Test::Type::TTest)) & - setAllBits(m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent))); + ui.pbLeveneTest->setVisible(bool((m_test.type & HypothesisTest::Test::Type::Anova & + setAllBits(m_test.subtype & HypothesisTest::Test::SubType::OneWay)) | + (HypothesisTest::Test::Type::TTest & + setAllBits(m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent)))); ui.lH1->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH1OneTail1->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH1OneTail2->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH1TwoTail->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.lH0->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH0OneTail1->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH0OneTail2->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH0TwoTail->setVisible(bool(m_test.type & ~HypothesisTest::Test::Type::Anova)); ui.rbH1TwoTail->setChecked(true); ui.lMuo->setVisible(bool(m_test.subtype & HypothesisTest::Test::SubType::OneSample)); ui.leMuo->setVisible(bool(ui.lMuo->isVisible())); ui.lAlpha->show(); ui.leAlpha->show(); setColumnsComboBoxView(); ui.pbPerformTest->setEnabled(nonEmptySelectedColumns()); ui.pbLeveneTest->setEnabled(nonEmptySelectedColumns()); } void HypothesisTestDock::doHypothesisTest() { //QDEBUG("in doHypothesisTest"); m_hypothesisTest->setPopulationMean(ui.leMuo->text()); m_hypothesisTest->setSignificanceLevel(ui.leAlpha->text()); QVector cols; if (ui.cbCol1->count() == 0) return; cols << reinterpret_cast(ui.cbCol1->currentData().toLongLong()); if (m_test.subtype & (~HypothesisTest::Test::SubType::OneSample)) if (ui.cbCol2->count() > 0) cols << reinterpret_cast(ui.cbCol2->currentData().toLongLong()); m_hypothesisTest->setColumns(cols); m_hypothesisTest->performTest(m_test, ui.chbCategorical->isChecked(), ui.chbEqualVariance->isChecked()); } void HypothesisTestDock::performLeveneTest() { QVector cols; if (ui.cbCol1->count() == 0 || ui.cbCol2->count() == 0) return; cols << reinterpret_cast(ui.cbCol1->currentData().toLongLong()); cols << reinterpret_cast(ui.cbCol2->currentData().toLongLong()); m_hypothesisTest->setColumns(cols); m_hypothesisTest->setSignificanceLevel(ui.leAlpha->text()); m_hypothesisTest->performLeveneTest(ui.chbCategorical->isChecked()); } void HypothesisTestDock::setModelIndexFromAspect(TreeViewComboBox* cb, const AbstractAspect* aspect) { if (aspect) cb->setCurrentModelIndex(m_aspectTreeModel->modelIndexOfAspect(aspect)); else cb->setCurrentModelIndex(QModelIndex()); } ///*! // shows the database manager where the connections are created and edited. // The selected connection is selected in the connection combo box in this widget. //**/ //void HypothesisTestDock::showDatabaseManager() { // DatabaseManagerDialog* dlg = new DatabaseManagerDialog(this, ui.cbConnection->currentText()); // if (dlg->exec() == QDialog::Accepted) { // //re-read the available connections to be in sync with the changes in DatabaseManager // m_initializing = true; // ui.cbConnection->clear(); // readConnections(); // //select the connection the user has selected in DatabaseManager // const QString& conn = dlg->connection(); // ui.cbConnection->setCurrentIndex(ui.cbConnection->findText(conn)); // m_initializing = false; // connectionChanged(); // } // delete dlg; //} ///*! // loads all available saved connections //*/ //void HypothesisTestDock::readConnections() { // DEBUG("ImportSQLDatabaseWidget: reading available connections"); // KConfig config(m_configPath, KConfig::SimpleConfig); // for (const auto& name : config.groupList()) // ui.cbConnection->addItem(name); //} ///*! // * adds the selected field to the rows // */ //void HypothesisTestDock::addRow() { // QString field = ui.lwFields->currentItem()->text(); // ui.lwRows->addItem(field); // ui.lwFields->takeItem(ui.lwFields->currentRow()); // m_hypothesisTest->addToRows(field); //} ///*! // * removes the selected field from the rows // */ //void HypothesisTestDock::removeRow() { // const QString& field = ui.lwRows->currentItem()->text(); // ui.lwRows->takeItem(ui.lwRows->currentRow()); // m_hypothesisTest->removeFromRows(field); // updateFields(); //} ///*! // * adds the selected field to the columns // */ //void HypothesisTestDock::addColumn() { // QString field = ui.lwFields->currentItem()->text(); // ui.lwColumns->addItem(field); // ui.lwFields->takeItem(ui.lwFields->currentRow()); // m_hypothesisTest->addToColumns(field); //} ///*! // * removes the selected field from the columns // */ //void HypothesisTestDock::removeColumn() { // const QString& field = ui.lwColumns->currentItem()->text(); // ui.lwColumns->takeItem(ui.lwColumns->currentRow()); // m_hypothesisTest->removeFromColumns(field); // updateFields(); //} ///*! // * re-populates the content of the "Fields" list widget by adding the non-selected fields only. // * called when a selected field is removed from rows or columns. // */ //void HypothesisTestDock::updateFields() { // ui.lwFields->clear(); // for (auto dimension : m_hypothesisTest->dimensions()) // if (!fieldSelected(dimension)) // ui.lwFields->addItem(new QListWidgetItem(QIcon::fromTheme("draw-text"), dimension)); // for (auto measure : m_hypothesisTest->measures()) // if (!fieldSelected(measure)) // ui.lwFields->addItem(new QListWidgetItem(measure)); //} ///*! // * return \c true if the field name \c field was selected among rows or columns, // * return \c false otherwise. // * */ //bool HypothesisTestDock::fieldSelected(const QString& field) { // for (int i = 0; icount(); ++i) // if (ui.lwRows->item(i)->text() == field) // return true; // for (int i = 0; icount(); ++i) // if (ui.lwColumns->item(i)->text() == field) // return true; // return false; //} ////************************************************************* ////****** SLOTs for changes triggered in HypothesisTestDock ******* ////************************************************************* //void HypothesisTestDock::nameChanged() { // if (m_initializing) // return; // m_hypothesisTest->setName(ui.leName->text()); //} //void HypothesisTestDock::commentChanged() { // if (m_initializing) // return; // m_hypothesisTest->setComment(ui.leComment->text()); //} void HypothesisTestDock::dataSourceTypeChanged(int index) { //QDEBUG("in dataSourceTypeChanged"); HypothesisTest::DataSourceType type = static_cast(index); bool showDatabase = (type == HypothesisTest::DataSourceType::DataSourceDatabase); ui.lSpreadsheet->setVisible(!showDatabase); cbSpreadsheet->setVisible(!showDatabase); ui.lConnection->setVisible(showDatabase); ui.cbConnection->setVisible(showDatabase); ui.bDatabaseManager->setVisible(showDatabase); ui.lTable->setVisible(showDatabase); ui.cbTable->setVisible(showDatabase); //QDEBUG("setting current index"); ui.cbTest->setCurrentIndex(0); emit ui.cbTest->currentIndexChanged(0); ui.cbTestType->setCurrentIndex(0); emit ui.cbTestType->currentIndexChanged(0); if (m_initializing) return; m_hypothesisTest->setComment(ui.leComment->text()); } void HypothesisTestDock::spreadsheetChanged(const QModelIndex& index) { //QDEBUG("in spreadsheetChanged"); auto* aspect = static_cast(index.internalPointer()); Spreadsheet* spreadsheet = dynamic_cast(aspect); setColumnsComboBoxModel(spreadsheet); m_hypothesisTest->setDataSourceSpreadsheet(spreadsheet); } void HypothesisTestDock::changeCbCol2Label() { //QDEBUG("in changeCbCol2Label"); if ( (m_test.type & ~HypothesisTest::Test::Type::Anova) & (m_test.subtype & ~HypothesisTest::Test::SubType::TwoSampleIndependent)) { ui.lCol2->setText( i18n("Independent Var. 2")); return; } if (ui.cbCol1->count() == 0) return; QString selected_text = ui.cbCol1->currentText(); Column* col1 = m_hypothesisTest->dataSourceSpreadsheet()->column(selected_text); if (!ui.chbCategorical->isChecked() && (col1->columnMode() == AbstractColumn::Integer || col1->columnMode() == AbstractColumn::Numeric)) { ui.lCol2->setText( i18n("Independent Var. 2")); ui.chbCategorical->setChecked(false); ui.chbCategorical->setEnabled(true); } else { ui.lCol2->setText( i18n("Dependent Var. 1")); if (!ui.chbCategorical->isChecked()) ui.chbCategorical->setEnabled(false); else ui.chbCategorical->setEnabled(true); ui.chbCategorical->setChecked(true); } } void HypothesisTestDock::chbPopulationSigmaStateChanged() { if (ui.chbPopulationSigma->isVisible() && ui.chbPopulationSigma->isChecked()) ui.lePopulationSigma->show(); else ui.lePopulationSigma->hide(); } void HypothesisTestDock::col1IndexChanged(int index) { if (index < 0) return; changeCbCol2Label(); } //void HypothesisTestDock::connectionChanged() { // if (ui.cbConnection->currentIndex() == -1) { // ui.lTable->hide(); // ui.cbTable->hide(); // return; // } // //clear the previously shown tables // ui.cbTable->clear(); // ui.lTable->show(); // ui.cbTable->show(); // const QString& connection = ui.cbConnection->currentText(); // //connection name was changed, determine the current connections settings // KConfig config(m_configPath, KConfig::SimpleConfig); // KConfigGroup group = config.group(connection); // //close and remove the previos connection, if available // if (m_db.isOpen()) { // m_db.close(); // QSqlDatabase::removeDatabase(m_db.driverName()); // } // //open the selected connection // //QDEBUG("HypothesisTestDock: connecting to " + connection); // const QString& driver = group.readEntry("Driver"); // m_db = QSqlDatabase::addDatabase(driver); // const QString& dbName = group.readEntry("DatabaseName"); // if (DatabaseManagerWidget::isFileDB(driver)) { // if (!QFile::exists(dbName)) { // KMessageBox::error(this, i18n("Couldn't find the database file '%1'. Please check the connection settings.", dbName), // appendRow i18n("Connection Failed")); // return; // } else // m_db.setDatabaseName(dbName); // } else if (DatabaseManagerWidget::isODBC(driver)) { // if (group.readEntry("CustomConnectionEnabled", false)) // m_db.setDatabaseName(group.readEntry("CustomConnectionString")); // else // m_db.setDatabaseName(dbName); // } else { // m_db.setDatabaseName(dbName); // m_db.setHostName( group.readEntry("HostName") ); // m_db.setPort( group.readEntry("Port", 0) ); // m_db.setUserName( group.readEntry("UserName") ); // m_db.setPassword( group.readEntry("Password") ); // } // WAIT_CURSOR; // if (!m_db.open()) { // RESET_CURSOR; // KMessageBox::error(this, i18n("Failed to connect to the database '%1'. Please check the connection settings.", ui.cbConnection->currentText()) + // QLatin1String("\n\n") + m_db.lastError().databaseText(), // i18n("Connection Failed")); // return; // } // //show all available database tables // if (m_db.tables().size()) { // for (auto table : m_db.tables()) // ui.cbTable->addItem(QIcon::fromTheme("view-form-table"), table); // ui.cbTable->setCurrentIndex(0); // } // RESET_CURSOR; // if (m_initializing) // return; //// m_hypothesisTest->setDataSourceConnection(connection); //} //void HypothesisTestDock::tableChanged() { // const QString& table = ui.cbTable->currentText(); // //show all attributes of the selected table //// for (const auto* col : spreadsheet->children()) { //// QListWidgetItem* item = new QListWidgetItem(col->icon(), col->name()); //// ui.lwFields->addItem(item); //// } // if (m_initializing) // return; //// m_hypothesisTest->setDataSourceTable(table); //} ////************************************************************* ////******** SLOTs for changes triggered in Spreadsheet ********* ////************************************************************* void HypothesisTestDock::hypothesisTestDescriptionChanged(const AbstractAspect* aspect) { //QDEBUG("in hypothesisTestDescriptionChanged"); if (m_hypothesisTest != aspect) return; m_initializing = true; if (aspect->name() != ui.leName->text()) ui.leName->setText(aspect->name()); else if (aspect->comment() != ui.leComment->text()) ui.leComment->setText(aspect->comment()); m_initializing = false; } ////************************************************************* ////******************** SETTINGS ******************************* ////************************************************************* //void HypothesisTestDock::load() { //} //void HypothesisTestDock::loadConfigFromTemplate(KConfig& config) { // Q_UNUSED(config); //} ///*! // loads saved matrix properties from \c config. // */ //void HypothesisTestDock::loadConfig(KConfig& config) { // Q_UNUSED(config); //} ///*! // saves matrix properties to \c config. // */ //void HypothesisTestDock::saveConfigAsTemplate(KConfig& config) { // Q_UNUSED(config); //} //TODO: Rather than inbuilt slots use own decided slots for checked rather than clicked // for alternate hypothesis // one_tail_1 is mu > mu0; one_tail_2 is mu < mu0; two_tail = mu != mu0; void HypothesisTestDock::onRbH1OneTail1Toggled(bool checked) { if (!checked) return; ui.rbH0OneTail1->setChecked(true); m_test.tail = HypothesisTest::Test::Tail::Positive; } void HypothesisTestDock::onRbH1OneTail2Toggled(bool checked) { if (!checked) return; ui.rbH0OneTail2->setChecked(true); m_test.tail = HypothesisTest::Test::Tail::Negative; } void HypothesisTestDock::onRbH1TwoTailToggled(bool checked) { if (!checked) return; ui.rbH0TwoTail->setChecked(true); m_test.tail = HypothesisTest::Test::Tail::Two; } /**************************************Helper Functions********************************************/ - void HypothesisTestDock::countPartitions(Column *column, int &np, int &total_rows) { total_rows = column->rowCount(); np = 0; QString cell_value; QMap discovered_categorical_var; AbstractColumn::ColumnMode original_col_mode = column->columnMode(); column->setColumnMode(AbstractColumn::Text); for (int i = 0; i < total_rows; i++) { cell_value = column->textAt(i); if (cell_value.isEmpty()) { total_rows = i; break; } if (discovered_categorical_var[cell_value]) continue; discovered_categorical_var[cell_value] = true; np++; } column->setColumnMode(original_col_mode); } void HypothesisTestDock::setColumnsComboBoxModel(Spreadsheet* spreadsheet) { m_onlyValuesCols.clear(); m_twoCategoricalCols.clear(); m_multiCategoricalCols.clear(); for (auto* col : spreadsheet->children()) { if (col->columnMode() == AbstractColumn::Integer || col->columnMode() == AbstractColumn::Numeric) m_onlyValuesCols.append(col); else { int np = 0, n_rows = 0; countPartitions(col, np, n_rows); if (np <= 1) continue; else if (np == 2) m_twoCategoricalCols.append(col); else m_multiCategoricalCols.append(col); } } setColumnsComboBoxView(); showHypothesisTest(); } //TODO: change from if else to switch case: void HypothesisTestDock::setColumnsComboBoxView() { ui.cbCol1->clear(); ui.cbCol2->clear(); + ui.cbCol3->clear(); QList::iterator i; - if (m_test.subtype & HypothesisTest::Test::SubType::TwoSampleIndependent) { - for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) { - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - ui.cbCol2->addItem( (*i)->name(), qint64(*i)); - } - for (i = m_twoCategoricalCols.begin(); i != m_twoCategoricalCols.end(); i++) - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - } else if (m_test.subtype & HypothesisTest::Test::SubType::TwoSamplePaired) { - for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) { - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - ui.cbCol2->addItem( (*i)->name(), qint64(*i)); - } - } else if (m_test.subtype & HypothesisTest::Test::SubType::OneSample) { - for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - } else if (m_test.type & HypothesisTest::Test::Type::Anova) { - for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) - ui.cbCol2->addItem( (*i)->name(), qint64(*i)); - for (i = m_twoCategoricalCols.begin(); i != m_twoCategoricalCols.end(); i++) - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - for (i = m_multiCategoricalCols.begin(); i != m_multiCategoricalCols.end(); i++) - ui.cbCol1->addItem( (*i)->name(), qint64(*i)); - } + switch (m_test.type) { + case (HypothesisTest::Test::Type::ZTest): + case (HypothesisTest::Test::Type::TTest): { + switch (m_test.subtype) { + case (HypothesisTest::Test::SubType::TwoSampleIndependent): { + for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) { + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + ui.cbCol2->addItem( (*i)->name(), qint64(*i)); + } + for (i = m_twoCategoricalCols.begin(); i != m_twoCategoricalCols.end(); i++) + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + break; + } + case (HypothesisTest::Test::SubType::TwoSamplePaired): { + for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) { + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + ui.cbCol2->addItem( (*i)->name(), qint64(*i)); + } + break; + } + case (HypothesisTest::Test::SubType::OneSample): { + for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + break; + } + case HypothesisTest::Test::SubType::OneWay: + case HypothesisTest::Test::SubType::TwoWay: + case HypothesisTest::Test::SubType::NoneSubType: + break; + } + break; + } + case HypothesisTest::Test::Type::Anova: { + switch (m_test.subtype) { + case HypothesisTest::Test::SubType::OneWay: { + for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) + ui.cbCol2->addItem( (*i)->name(), qint64(*i)); + for (i = m_twoCategoricalCols.begin(); i != m_twoCategoricalCols.end(); i++) + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + for (i = m_multiCategoricalCols.begin(); i != m_multiCategoricalCols.end(); i++) + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + break; + } + case HypothesisTest::Test::SubType::TwoWay: { + for (i = m_onlyValuesCols.begin(); i != m_onlyValuesCols.end(); i++) + ui.cbCol2->addItem( (*i)->name(), qint64(*i)); + + for (i = m_twoCategoricalCols.begin(); i != m_twoCategoricalCols.end(); i++) { + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + ui.cbCol3->addItem( (*i)->name(), qint64(*i)); + } + for (i = m_multiCategoricalCols.begin(); i != m_multiCategoricalCols.end(); i++) { + ui.cbCol1->addItem( (*i)->name(), qint64(*i)); + ui.cbCol3->addItem( (*i)->name(), qint64(*i)); + } + break; + } + case HypothesisTest::Test::SubType::TwoSampleIndependent: + case HypothesisTest::Test::SubType::TwoSamplePaired: + case HypothesisTest::Test::SubType::OneSample: + case HypothesisTest::Test::SubType::NoneSubType: + break; + } + break; + } + case HypothesisTest::Test::Type::NoneType: + break; + } } bool HypothesisTestDock::nonEmptySelectedColumns() { if (ui.cbCol1->isVisible() && ui.cbCol1->count() < 1) return false; if (ui.cbCol2->isVisible() && ui.cbCol2->count() < 1) return false; return true; } uint8_t HypothesisTestDock::setAllBits(const uint8_t& bits) { if (!bits) return 0; return ~(bits & (bits-1)); } diff --git a/src/kdefrontend/ui/dockwidgets/hypothesistestdock.ui b/src/kdefrontend/ui/dockwidgets/hypothesistestdock.ui index dc014ee30..f16c87109 100644 --- a/src/kdefrontend/ui/dockwidgets/hypothesistestdock.ui +++ b/src/kdefrontend/ui/dockwidgets/hypothesistestdock.ui @@ -1,521 +1,521 @@ HypothesisTestDock 0 0 557 1293 Form 75 true Hypothesis Independent Var. 1 Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter Equal Variance Qt::Vertical QSizePolicy::Fixed 32 18 Variable Qt::Vertical 18 38 Sub-type Comment: 75 true Variables Table: Qt::Horizontal QSizePolicy::Fixed 13 23 Qt::Vertical QSizePolicy::Fixed 32 18 Independent Var. 1 Cateogical Alternate Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop Levene's Test Qt::Horizontal 0 0 Name: 0 0 QFrame::NoFrame QFrame::Raised 0 0 0 0 mu <= muo mu >= muo mu == muo alpha Qt::Horizontal 150 20 Source: 75 true Data Qt::Vertical QSizePolicy::Fixed 32 18 muo Qt::Vertical QSizePolicy::Fixed 32 18 Spreadsheet: QFrame::NoFrame QFrame::Raised 0 0 0 0 0 mu > muo mu < muo mu != muo 75 true Test 0 0 Null Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop Sigma Type Recalculate 0 0 Connection: - TextLabel + Independent Var. 2