I have a simple plane and a cycles material as shown in the image. (Blender 2.68a)
I extracted the R channel from the ‘texture coordinates’ node to get the uv coordinates in the horizontal direction.
As you can see the grey gradient is not linear from black to white. For comparision I created a linear gradient using Gimp (see red arrow).
My question now is why the gradient is not linear and how to make it linear?
I need this to change e.g. size of a texture depending on uv coordinates, but I need it linear.
Thanks for any explanation and help!