edit a surf plot

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Fakhraddin Akbari Dourbash 2020-3-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/512112-edit-a-surf-plot

评论： Fakhraddin Akbari Dourbash 2020-3-21

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

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darova 2020-3-21

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

Fakhraddin Akbari Dourbash 2020-3-21

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.

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采纳的回答

darova 2020-3-21

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/512112-edit-a-surf-plot#answer_421255

在 MATLAB Online 中打开

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