J B wrote:
To all,
I have created a contour plot and trying to control the scale and/or the colour scheme.
Under the advanced properties I can see the option 'choose colormap'
Q1: with the (default) rainbow map, is red the high value or low value (on the z axis)? look high it's the high value
Q2: I believe (from the doc) one can allocate a colour map ( SaveColormap and LoadColormap functions)
Can this be used to create one own scale so that
[0-0.1] = a colour
]0.1-0.2] = another colour
...
]0.9-1] = red
a 10 band colour map
Thanks
Regards
Does the attached help any?
You'll need to add the correct path for you Mathcad colormap folder.
Stuart
J B wrote:
thanks a lot Stuart. Will take me a while to go through the provided example/data
I suspect somewhere there is an example on how to set up a "fixed" 10 value colour band
I don't think it does that ... the colour mapping interpolates, IIRC, so if there is no block banding of the colours (they smear together). However, here's a simple function that should help.
Just create a string of the RGB values of your chosen colours (I used a standard colour picker and chose some at random), convert it to a matrix (using my conversion routine str2mat), pass to the block colour mapping function below and then save as a colormap. (You could also just type the coefficients straight into a 10x3 matrix rather than do the conversion, but I find the string method easier)
The new colour map is the 3rd from the right in the map below.
Staurt
