On Thu, 21 Jun 2018 11:51:59 +0200, Massimiliano Maini wrote: > I'd need to do something like this: https://imgur.com/MLAEuad > > I have a set of (x,y,z) data points and want to plot them on a usual 2d > plot ( x and y values), but with the line color depending on the z > values (colormap).
Qwt ( http://qwt.sourceforge.net ) offers something like that: See http://qwt.sourceforge.net/class_qwt_plot_spectro_curve.html It is not exactly your requirement as this item renders dots, but it can easily be expanded to draw lines with gradients, built from the colors that corresponds to the z values. Actually your type of representation could be added to Qwt - even if I never heard of a use case, where interpolating the color on a line between 2 samples makes much sense from the user point of view. But anyway - if you like to go into this direction let me know. Uwe _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
