https://forum.qt.io/topic/54848/qwtplot-zooming-logarithmic-scale
QwtPlot zooming logarithmic scale | Qt Forum
Jun 3, 2015 - zoscHello, i have a QwtPlot with a logarithmic scale on y and time scale on x. That was not the problem, but zooming into the graph. I have three unwanted ef...
zoominglogarithmicscaleqtforum