The QwtPlot class provided by this header is highly versatile and supports: : Up to four axes (Bottom, Top, Left, Right). Plot Items : Add curves, markers, grids, and scales easily.
Add the following lines to include the Qwt headers and link the library: CONFIG += qwt INCLUDEPATH += /usr/include/qwt LIBS += -lqwt Use code with caution. 2. In your C++ code Use the include directive at the top of your source file: qwt_plot.h download
: Ensure your INCLUDEPATH points to the exact folder containing the .h files. On some systems, this is /usr/local/qwt-6.x.x/include . The QwtPlot class provided by this header is