#include #include #include "jkqtplotter/jkqtplotter.h" #include "jkqtplotter/jkqtpgraphs.h" #include "jkqtplotter/jkqtpgraphsimage.h" int main(int argc, char* argv[]) { QApplication app(argc, argv); JKQtPlotter plot; // 1. create a plotter window and get a pointer to the internal datastore (for convenience) plot.get_plotter()->set_useAntiAliasingForGraphs(true); // nicer (but slower) plotting plot.get_plotter()->set_useAntiAliasingForSystem(true); // nicer (but slower) plotting plot.get_plotter()->set_useAntiAliasingForText(true); // nicer (but slower) text rendering // 2. now we open a BMP-file and load it into an OpenCV cv::Mat QImage image(":/example.bmp"); // 3. create a graph (JKQTPImage) with a pointer to the QImage-object, generated above JKQTPImage* graph=new JKQTPImage(&plot); graph->set_title(""); // copy the image into the graph (optionally you could also give a pointer to a QImage, // but then you need to ensure that the QImage is available as long as the JKQTPImage // instace lives) graph->set_image(image); // where does the image start in the plot, given in plot-axis-coordinates (bottom-left corner) graph->set_x(0); graph->set_y(0); // width/height of the image in plot coordinates graph->set_width(image.width()); graph->set_height(image.height()); // 4. add the graphs to the plot, so it is actually displayed plot.addGraph(graph); // 5. set axis labels plot.get_xAxis()->set_axisLabel("x [pixels]"); plot.get_yAxis()->set_axisLabel("y [pixels]"); // 6. fix axis aspect ratio to width/height, so pixels are square plot.get_plotter()->set_maintainAspectRatio(true); plot.get_plotter()->set_aspectRatio(double(image.width())/double(image.height())); // 7. autoscale the plot so the graph is contained plot.zoomToFit(); // 8. show plotter and make it a decent size plot.show(); plot.resize(800,600); plot.setWindowTitle("JKQTPImage"); return app.exec(); }