mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-11-16 10:35:49 +08:00
127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
#include <QApplication>
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#include "jkqtplotter/jkqtplotter.h"
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#include "jkqtplottertools/jkqtptools.h"
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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 a vector of x-values for a simple plot and several sets of y-values for
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// cosine curves stacked above each other
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QVector<double> X, Y1, Y2, Y3;
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const int Ndata=10; // number of plot points in each curve
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for (int i=0; i<Ndata; i++) {
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const double x=double(i)/double(Ndata)*2.0*M_PI;
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X<<x;
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Y1<<cos(x)+1.0*1.5;
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Y2<<cos(x)+2.0*1.5;
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Y3<<cos(x)+3.0*1.5;
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}
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// and copy it to the datastore
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size_t columnX=ds->addCopiedColumn(X, "x");
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size_t columnY1=ds->addCopiedColumn(Y1, "y1");
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size_t columnY2=ds->addCopiedColumn(Y2, "y2");
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size_t columnY3=ds->addCopiedColumn(Y3, "y3");
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// 3 now we make several plots with different step styles, each one also contains a
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// symbol plot indicating the location of the datapoints themselves
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JKQTPstepHorizontalGraph* graph;
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JKQTPxyLineGraph* graphL;
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//-- JKQTPstepLeft ----------------------------------------------------------------------------------------
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graph=new JKQTPstepHorizontalGraph(&plot);
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graphL=new JKQTPxyLineGraph(&plot);
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// set data for both graphs
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graph->set_xColumn(columnX); graphL->set_xColumn(graph->get_xColumn());
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graph->set_yColumn(columnY1); graphL->set_yColumn(graph->get_yColumn());
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// set step style
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graph->set_stepType(JKQTPstepLeft);
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graph->set_lineWidth(1);
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graph->set_fillCurve(true);
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graph->set_drawLine(true);
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graph->set_title("JKQTPstepLeft, filled");
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// set symbol + pen style and color for the added circles, copy color
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graphL->set_symbol(JKQTPgraphSymbols::JKQTPcircle);
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graphL->set_drawLine(false);
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graphL->set_symbolSize(9);
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graphL->set_symbolWidth(1);
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graphL->set_color(graph->get_color());
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// add the graphs to the plot, so it is actually displayed
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plot.addGraph(graph);
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plot.addGraph(graphL);
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//-- JKQTPstepCenter ----------------------------------------------------------------------------------------
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graph=new JKQTPstepHorizontalGraph(&plot);
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graphL=new JKQTPxyLineGraph(&plot);
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// set data for both graphs
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graph->set_xColumn(columnX); graphL->set_xColumn(graph->get_xColumn());
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graph->set_yColumn(columnY2); graphL->set_yColumn(graph->get_yColumn());
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// set step style
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graph->set_stepType(JKQTPstepCenter);
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graph->set_lineWidth(1);
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graph->set_fillCurve(false);
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graph->set_drawLine(true);
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graph->set_title("JKQTPstepCenter");
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// set symbol + pen style and color for the added circles, copy color
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graphL->set_symbol(JKQTPgraphSymbols::JKQTPcircle);
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graphL->set_drawLine(false);
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graphL->set_symbolSize(9);
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graphL->set_symbolWidth(1);
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graphL->set_color(graph->get_color());
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// add the graphs to the plot, so it is actually displayed
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plot.addGraph(graph);
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plot.addGraph(graphL);
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//-- JKQTPstepRight ----------------------------------------------------------------------------------------
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graph=new JKQTPstepHorizontalGraph(&plot);
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graphL=new JKQTPxyLineGraph(&plot);
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// set data for both graphs
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graph->set_xColumn(columnX); graphL->set_xColumn(graph->get_xColumn());
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graph->set_yColumn(columnY3); graphL->set_yColumn(graph->get_yColumn());
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// set step style
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graph->set_stepType(JKQTPstepRight);
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graph->set_lineWidth(1);
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graph->set_fillCurve(false);
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graph->set_drawLine(true);
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graph->set_title("JKQTPstepRight");
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// set symbol + pen style and color for the added circles, copy color
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graphL->set_symbol(JKQTPgraphSymbols::JKQTPcircle);
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graphL->set_drawLine(false);
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graphL->set_symbolSize(9);
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graphL->set_symbolWidth(1);
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graphL->set_color(graph->get_color());
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// add the graphs to the plot, so it is actually displayed
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plot.addGraph(graph);
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plot.addGraph(graphL);
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// 4. scale plot manually
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plot.setXY(-0.5, X.last()+0.5, -0.5, 7);
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// 5. show plotter and make it a decent size
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plot.show();
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plot.resize(800,600);
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return app.exec();
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}
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