File indexing completed on 2024-04-28 03:48:04
0001 /* 0002 File : SmoothTest.cpp 0003 Project : LabPlot 0004 Description : Tests for data smoothing 0005 -------------------------------------------------------------------- 0006 SPDX-FileCopyrightText: 2020 Stefan Gerlach <stefan.gerlach@uni.kn> 0007 0008 SPDX-License-Identifier: GPL-2.0-or-later 0009 */ 0010 0011 #include "SmoothTest.h" 0012 #include "backend/core/column/Column.h" 0013 #include "backend/worksheet/plots/cartesian/XYSmoothCurve.h" 0014 0015 extern "C" { 0016 #include "backend/nsl/nsl_smooth.h" 0017 } 0018 0019 // ############################################################################## 0020 0021 void SmoothTest::testPercentile() { 0022 // data 0023 QVector<int> xData{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; 0024 QVector<double> yData{47.7, 44., 43., 44.96, 45., 43.73, 38., 47.1, 44., 38.3}; 0025 // p=0.5, d=5 (check with LibreOffice and Origin 2020a) 0026 QVector<double> result50_5{47.7, 44, 44.96, 44, 43.73, 44.96, 44, 43.73, 44, 38.3}; 0027 0028 // data source columns 0029 Column xDataColumn(QStringLiteral("x"), AbstractColumn::ColumnMode::Integer); 0030 xDataColumn.replaceInteger(0, xData); 0031 0032 Column yDataColumn(QStringLiteral("y"), AbstractColumn::ColumnMode::Double); 0033 yDataColumn.replaceValues(0, yData); 0034 0035 XYSmoothCurve smoothCurve(QStringLiteral("smooth")); 0036 smoothCurve.setXDataColumn(&xDataColumn); 0037 smoothCurve.setYDataColumn(&yDataColumn); 0038 0039 // prepare the smooth 0040 XYSmoothCurve::SmoothData smoothData = smoothCurve.smoothData(); 0041 smoothData.type = nsl_smooth_type_percentile; 0042 // default 0043 // smoothData.points = 5; 0044 // smoothData.percentile = 0.5; 0045 smoothCurve.setSmoothData(smoothData); 0046 0047 // perform the smooth 0048 smoothCurve.recalculate(); 0049 const auto& smoothResult = smoothCurve.result(); 0050 0051 // check the results 0052 QCOMPARE(smoothResult.available, true); 0053 QCOMPARE(smoothResult.valid, true); 0054 0055 const auto* resultXDataColumn{smoothCurve.xColumn()}; 0056 const auto* resultYDataColumn{smoothCurve.yColumn()}; 0057 0058 const int np{resultXDataColumn->rowCount()}; 0059 QCOMPARE(np, 10); 0060 0061 for (int i = 0; i < np; i++) { 0062 QCOMPARE(resultXDataColumn->valueAt(i), (double)i + 1); 0063 QCOMPARE(resultYDataColumn->valueAt(i), result50_5.at(i)); 0064 } 0065 } 0066 0067 QTEST_MAIN(SmoothTest)