Contour Plot Color Scaling
6 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I have a function dependant on variables A and B. I want to plot the values on a filled contour plot with A,B as the x,y axes.
The code is something like this:
A=[0:0.1:1];
B=[0:0.1:1];
figure
[X,Y]=meshgrid(A,B);
Z=function(A,B);
contourf(X,Y,Z);
colorbar;
Since the values of Z (the data) are from around -1 to +1 the contour plot is fine and can easily see the variations.
However setting the range of B (or A) to B=[0:0.01:1] as required to improve accuracy results in a few odd values being much larger (near 100) which completely skews the contour plot so I just end up with a red point there and everything else blue (indicating near zero) meaning I can no longer distinguish these small variations between most of the data points. The colorbar also indicates this new range linearly, as expected but not ideal.
I thought about taking log of the data? or just for Z? Something like:
figure
[X,Y]=meshgrid(A,B);
Z=function(A,B);
contourf(X,Y,log(Z));
colorbar;
But this gives me all sorts of errors. I don't know how to properly do this.
Is this the way to go to fix the issue? Or if not what's another way?
0 Kommentare
Antworten (0)
Siehe auch
Kategorien
Mehr zu Contour Plots finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!