mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-12-26 10:31:39 +08:00
a67975e680
- some reorganizations into different files - additional options for graph filling (color gradients, textures, ...) as provided by QBrush - PREPARATIONS: added a general feature to JKQTPPlotElement which allows to show a graph in a highlighted state (if supported by the derived graph class!) - JKQTPXYParametrizedScatterGraph: added functors to transform column values into symbol type+size and line-width to give even more control - JKQTPStepHorizontalGraph has been renamed to JKQTPSpecialLineHorizontalGraph (vertical variants also) and have gained additional features (baseline for filling and drawing of symbols) - filled curve graphs (e.g. JKQTPSpecialLineHorizontalGraph) are now merely a specializedly initialized JKQTPSpecialLineHorizontalGraph
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
/** \example jkqtplotter_simpletest_impulsesplot.cpp
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* Shows how to plot impulse graphs with JKQTPlotter
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*
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* \ref JKQTPlotterImpulsePlots
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*/
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#include <QApplication>
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#include "jkqtplotter/jkqtplotter.h"
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#include "jkqtplotter/jkqtpgraphsimpulses.h"
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// number of datapoints:
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#define Ndata 40
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int main(int argc, char* argv[])
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{
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QApplication app(argc, argv);
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// 1. create a plotter window and get a pointer to the internal datastore (for convenience)
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JKQTPlotter plot;
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JKQTPDatastore* ds=plot.getDatastore();
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// 2. now we create data for a simple plot (a sine curve with lin. increasing errors)
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QVector<double> X, Y;
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for (int i=0; i<Ndata; i++) {
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const double xx=double(i)/double(Ndata)*6.0*M_PI;
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X << xx;
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Y << cos(xx)*exp(-xx/10.0);
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}
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// 3. add data from vectors to the datastore
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size_t columnX=ds->addCopiedColumn(X, "x");
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size_t columnY=ds->addCopiedColumn(Y, "y");
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// 4. create a vertical impulse graph in the plot, which plots the dataset X/Y:
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JKQTPImpulsesVerticalGraph* graph=new JKQTPImpulsesVerticalGraph(&plot);
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graph->setXColumn(columnX);
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graph->setYColumn(columnY);
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graph->setLineWidth(2);
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graph->setColor(QColor("red"));
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graph->setTitle(QObject::tr("$\\cos(x)\\cdot\\exp(-x/10)$"));
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//graph->setDrawSymbols(true);
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//graph->setSymbolType(JKQTPGraphSymbols::JKQTPFilledStar);
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//graph->setBaseline(0.25);
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// 5. add the graph to the plot, so it is actually displayed
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plot.addGraph(graph);
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// 6. set some axis properties (we use LaTeX for nice equation rendering)
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plot.getXAxis()->setAxisLabel(QObject::tr("x-axis"));
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plot.getYAxis()->setAxisLabel(QObject::tr("y-axis"));
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// 7. switch the grid off
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plot.getXAxis()->setDrawGrid(false);
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plot.getYAxis()->setDrawGrid(false);
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// 8. autoscale the plot so the graph is contained
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plot.zoomToFit();
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// show plotter and make it a decent size
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plot.show();
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plot.resize(600,400);
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return app.exec();
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}
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