how to color a surface plot

I have plotted a surface plot using meshgrid as shown below

However I want to change the color to the ones shown in the example on mathworks: http://in.mathworks.com/help/matlab/learn_matlab/creating-mesh-and-surface-plots.html, I have surf too, but it didn't work. Can anyone please help me?

Answer 1

[Star Strider]

My guess is that you are referring to the plot in the Colored Surface Plots section of that documentation, created by this code:

[X,Y] = meshgrid(-8:.5:8);
R = sqrt(X.^2 + Y.^2) + eps;
Z = sin(R)./R;
surf(X,Y,Z)
colormap hsv                        % <— Specify ‘colormap’ To Override Default 
colorbar

You need to add this line:

colormap hsv

to your code to get the same colormap as in the example plot.

[Abhinav]

This is helpful, Thanks a lot. can you also tell me what to do if have to view the surface plot in 2D. I used view(2) and it shows a plot as drawn below. The problem is that the first is complete white which is wrong, the yellow column should actually be the first column.

Basically, I have a 21x30 matrix which I want show on a 2d color plot, each cell corresponds to Z value for a pair X and Y. How to do it?

[Star Strider]

My pleasure.

I don’t have your data, so you will have to do the experiment and tell me the result.

See if adding:

axis tight

after the plot does what you want.