Quote Originally Posted by bigjoeystud View Post
Now, Qwt wants to take ownership of the color map and I lost my control over the colors, etc. after I set the colormap.
These clone/copy methods of Qwt 5.x were a major source for user problems. That's why I have removed most of them and pass pointers instead - like everyone is used to from the Qt API. But why is this a problem if you want to manipulate the color map from application code ?

Uwe

PS: Right now I'm working to improve the accurancy of the raster item class and to introduce an additional type of raster data for values stored in a matrix. So don't be surpised to find undocumented APIs and ongoing changes.