/** \example second_axis.cpp * Shows how to draw Barcharts with different colors above and below the baseline in a JKQTPlotter * * \ref JKQTPlotterSecondaryAxes */ #include "jkqtpexampleapplication.h" #include #include "jkqtplotter/jkqtplotter.h" #include "jkqtplotter/graphs/jkqtplines.h" #include "jkqtpexampleapplication.h" void exampleSecondYAxis(JKQTPlotter& plot, const QString& title) { // 1. create a plotter window and get a pointer to the internal datastore (for convenience) JKQTPDatastore* ds=plot.getDatastore(); // 2. now we create two columns for key and value size_t columnX=ds->addLinearColumn(40, 0,10,"x"); size_t columnY1=ds->addCalculatedColumnFromColumn(columnX, [](double x) { return x; }, "y1"); size_t columnY2=ds->addCalculatedColumnFromColumn(columnX, [](double x) { return cos(x); }, "y2"); size_t columnY3=ds->addCalculatedColumnFromColumn(columnX, [](double x) { return x*x; }, "y3"); size_t columnY4=ds->addCalculatedColumnFromColumn(columnX, [](double x) { return sqrt(x); }, "y3"); // 3. create a second y-axis and set its formating options, so it only draws an axis on the right auto yAxisRef2=plot.getPlotter()->addSecondaryYAxis(new JKQTPVerticalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getYAxis(yAxisRef2)->setDrawGrid(false); plot.getYAxis(yAxisRef2)->setDrawMode1(JKQTPCADMnone); plot.getYAxis(yAxisRef2)->setDrawMode2(JKQTPCADMcomplete); plot.getYAxis(yAxisRef2)->setDrawMode0(JKQTPCADMnone); plot.getYAxis(yAxisRef2)->setShowZeroAxis(false); // ... and create third y-axis auto yAxisRef3=plot.getPlotter()->addSecondaryYAxis(new JKQTPVerticalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getYAxis(yAxisRef3)->setDrawGrid(false); plot.getYAxis(yAxisRef3)->setDrawMode1(JKQTPCADMnone); plot.getYAxis(yAxisRef3)->setDrawMode2(JKQTPCADMcomplete); plot.getYAxis(yAxisRef3)->setDrawMode0(JKQTPCADMnone); plot.getYAxis(yAxisRef3)->setShowZeroAxis(false); // ... and create fourth y-axis auto yAxisRef4=plot.getPlotter()->addSecondaryYAxis(new JKQTPVerticalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getYAxis(yAxisRef4)->setDrawGrid(false); plot.getYAxis(yAxisRef4)->setDrawMode1(JKQTPCADMcomplete); plot.getYAxis(yAxisRef4)->setDrawMode2(JKQTPCADMnone); plot.getYAxis(yAxisRef4)->setDrawMode0(JKQTPCADMnone); plot.getYAxis(yAxisRef4)->setShowZeroAxis(false); // ... reformat the major y-axis, so it does not draw on the right and thus the secondary axis yAxisRef2 replaces it there // if this step is omitted, the secondary axes stack on the right of the primary. plot.getYAxis()->setDrawMode2(JKQTPCADMnone); plot.getYAxis()->setAxisLabel("graph1"); // 3. create graph in the plot, which plots the dataset: // 3.1 the first graph uses the default (primary) x/y-axes JKQTPXYLineGraph* graph1=new JKQTPXYLineGraph(&plot); graph1->setKeyColumn(columnX); graph1->setValueColumn(columnY1); plot.addGraph(graph1); plot.getYAxis()->setColor(graph1->getLineColor()); // 3.2 the second graph uses the default (primary) x-axis, but the secondary axis yAxisRef2 as y-axis JKQTPXYLineGraph* graph2=new JKQTPXYLineGraph(&plot); graph2->setKeyColumn(columnX); graph2->setValueColumn(columnY2); plot.addGraph(graph2); // tell graph2 to use this axis graph2->setYAxis(yAxisRef2); // set axis color to match graph2's color plot.getYAxis(yAxisRef2)->setColor(graph2->getLineColor()); // set axis label plot.getYAxis(yAxisRef2)->setAxisLabel("graph2"); // 3.3 the third graph uses the default (primary) x-axis, but the secondary axis yAxisRef3 as y-axis JKQTPXYLineGraph* graph3=new JKQTPXYLineGraph(&plot); graph3->setKeyColumn(columnX); graph3->setValueColumn(columnY3); plot.addGraph(graph3); plot.getYAxis(yAxisRef3)->setColor(graph3->getLineColor()); plot.getYAxis(yAxisRef3)->setAxisLabel("graph3"); graph3->setYAxis(yAxisRef3); // 3.4 the fourth graph uses the default (primary) x-axis, but the ternary axis yAxisRef4 as y-axis JKQTPXYLineGraph* graph4=new JKQTPXYLineGraph(&plot); graph4->setKeyColumn(columnX); graph4->setValueColumn(columnY4); plot.addGraph(graph3); plot.getYAxis(yAxisRef4)->setColor(graph4->getLineColor()); plot.getYAxis(yAxisRef4)->setAxisLabel("graph4"); graph4->setYAxis(yAxisRef4); // 4. autoscale the plot so the graph is contained // This auto-scales all axes using the graphs (and their data) as assigned to the axes! // i.e. all 3 graphs for x-axis, // graph1 for primary y-axis, // graph2 for secondary axis yAxisRef2 // graph3 for secondary axis yAxisRef3 plot.zoomToFit(); // 5. show plotter and make it a decent size plot.setWindowTitle(title); plot.show(); plot.resize(500,400); } void exampleSecondXAxis(JKQTPlotter& plot, const QString& title) { // same as above, but with swapped x- and y-axes!!! JKQTPDatastore* ds=plot.getDatastore(); size_t columnY=ds->addLinearColumn(30, 0,12,"y"); size_t columnX1=ds->addCalculatedColumnFromColumn(columnY, [](double x) { return x; }, "x1"); size_t columnX2=ds->addCalculatedColumnFromColumn(columnY, [](double x) { return cos(x); }, "x2"); size_t columnX3=ds->addCalculatedColumnFromColumn(columnY, [](double x) { return x*x; }, "x3"); size_t columnX4=ds->addCalculatedColumnFromColumn(columnY, [](double x) { return sqrt(x); }, "x4"); JKQTPXYLineGraph* graph1=new JKQTPXYLineGraph(&plot); graph1->setXColumn(columnX1); graph1->setYColumn(columnY); plot.addGraph(graph1); JKQTPXYLineGraph* graph2=new JKQTPXYLineGraph(&plot); graph2->setXColumn(columnX2); graph2->setYColumn(columnY); plot.addGraph(graph2); JKQTPXYLineGraph* graph3=new JKQTPXYLineGraph(&plot); graph3->setXColumn(columnX3); graph3->setYColumn(columnY); plot.addGraph(graph3); JKQTPXYLineGraph* graph4=new JKQTPXYLineGraph(&plot); graph4->setXColumn(columnX4); graph4->setYColumn(columnY); plot.addGraph(graph4); plot.getXAxis()->setDrawMode2(JKQTPCADMLineTicksTickLabels); plot.getXAxis()->setColor(graph1->getLineColor()); plot.getXAxis()->setAxisLabel("graph1"); auto xAxisRef2=plot.getPlotter()->addSecondaryXAxis(new JKQTPHorizontalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getXAxis(xAxisRef2)->setDrawGrid(false); plot.getXAxis(xAxisRef2)->setDrawMode1(JKQTPCADMnone); plot.getXAxis(xAxisRef2)->setDrawMode2(JKQTPCADMcomplete); plot.getXAxis(xAxisRef2)->setDrawMode0(JKQTPCADMnone); plot.getXAxis(xAxisRef2)->setShowZeroAxis(false); plot.getXAxis(xAxisRef2)->setColor(graph2->getLineColor()); plot.getXAxis(xAxisRef2)->setAxisLabel("graph2"); graph2->setXAxis(xAxisRef2); auto xAxisRef3=plot.getPlotter()->addSecondaryXAxis(new JKQTPHorizontalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getXAxis(xAxisRef3)->setDrawGrid(false); plot.getXAxis(xAxisRef3)->setDrawMode1(JKQTPCADMnone); plot.getXAxis(xAxisRef3)->setDrawMode2(JKQTPCADMcomplete); plot.getXAxis(xAxisRef3)->setDrawMode0(JKQTPCADMnone); plot.getXAxis(xAxisRef3)->setShowZeroAxis(false); plot.getXAxis(xAxisRef3)->setColor(graph3->getLineColor()); plot.getXAxis(xAxisRef3)->setAxisLabel("graph3"); graph3->setXAxis(xAxisRef3); auto xAxisRef4=plot.getPlotter()->addSecondaryXAxis(new JKQTPHorizontalAxis(plot.getPlotter(), JKQTPPrimaryAxis)); plot.getXAxis(xAxisRef4)->setDrawGrid(false); plot.getXAxis(xAxisRef4)->setDrawMode1(JKQTPCADMcomplete); plot.getXAxis(xAxisRef4)->setDrawMode2(JKQTPCADMnone); plot.getXAxis(xAxisRef4)->setDrawMode0(JKQTPCADMnone); plot.getXAxis(xAxisRef4)->setShowZeroAxis(false); plot.getXAxis(xAxisRef4)->setColor(graph4->getLineColor()); plot.getXAxis(xAxisRef4)->setAxisLabel("graph4"); graph4->setXAxis(xAxisRef4); plot.zoomToFit(); plot.setWindowTitle(title); plot.show(); plot.resize(400,500); } int main(int argc, char* argv[]) { JKQTPAppSettingController highDPIController(argc,argv); JKQTPExampleApplication app(argc, argv); JKQTPlotter plotsecondY; //plotsecondY.getPlotter()->enableDebugShowRegionBoxes(true); exampleSecondYAxis(plotsecondY, "1: Second Y-Axis"); JKQTPlotter plotsecondX; //plotsecondX.getPlotter()->enableDebugShowRegionBoxes(true); exampleSecondXAxis(plotsecondX, "2: Second X-Axis"); return app.exec(); }