edit a surf plot

Hi, everyone. I have a surf plot which has 108*192 pixels (a f=tiff image converted to surf). I am only interested in the middle of the plot and I want to only show an area of say, x=1:10, 90:108 and y=1:10, 100:192. In other words, I want to remove everything outside of a square/circle (defined either by pixels or by interactively choosing it) in the middle.

Many thanks

[darova]

What is the problem?

[Fakhraddin Akbari Dourbash]

The probelm is I do not know how to do this.

I am doing some process on the whole image and would like to get this surf plot with all of the pixels processed, but want to remove some parts from the final surf plot. While trying to do this, error comes up: "data dimentions must agree"

[darova]

Can you show the code? And how are you trying to do this?

[Fakhraddin Akbari Dourbash]

Sure, the last part of the code:

x = 1:108;

y = 1:192;

[X,Y]=ndgrid(x,y);

surf(X,Y,T,'EdgeAlpha',.1);

M=jet

colormap(M)

colorbar

T is a fucntion after processing all the pixels and gives me the height in the surf plot.

Answer 1

[darova]

Try this

x = 1:108; 
y = 1:192;
[X,Y]=ndgrid(x,y);
ii = 90:108;
jj = 100:192;
surf(X,Y,T,'EdgeAlpha',.1);
alpha(0.5)
hold on
surf(X(ii,jj),Y(ii,jj),T(ii,jj))
hold off
M=jet
colormap(M) 
colorbar

[Fakhraddin Akbari Dourbash]

Gives me exactly what I wanted. Thanks. Appreciate it.