This project (see `./test/jkqtplotter_simpletest_rgbimageplot_qt/`) simply creates a JKQtPlotter widget (as a new window) and adds an image plot with an image taken from a [QImage](http://doc.qt.io/qt-5/qimage.html) object.
The source code of the main application is (see `./test/jkqtplotter_simpletest_rgbimageplot_qt/jkqtplotter_simpletest_rgbimageplot_qt.cpp`). the main parts are:
```c++
// 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
