Hi,
Starting in R2022b, to control the transparency of a 'contourf' plot, you can use the 'FaceAlpha' property in MATLAB. Here is an sample code for the same:
Z = peaks;
[M,c] = contourf(Z);
The range of 'FaceAlpha' is [0,1] with the deafult value being '1':
>> c.FaceAlpha
ans =
1
If you want to reduce the transparency, you can decrease the value of 'FaceAlpha' as follows:
c.FaceAlpha=0.3
Hope this helps!
