I'm using qwt 6.1.3 for some Qt plotting work and just to test I created a new project, added the library, and pasted the simpleplot.cpp example code into Qtcreator.
A copy of the file can be view here: https://github.com/eiimage/qwt/blob/master/examples/simpleplot/simpleplot.cpp
The code has returned numerous errors.
This problem was one of documentation. All online documentation and examples provided use the methods
setRawSamples to set the curve points. This is incorrect. The appropriate method is