3D or surface plot

Question

MOHD UWAIS 2021-2-26

0
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评论： MOHD UWAIS 2021-2-26

Hi,

Please look at my problem. I have a 'A' as dependent variable of two variables B and L. How I could plot in 3D or surface plot of these three variables. If I have two 'for loop' like (for example),

for B=-10:10;
for L=-10:10;
A=B+L^2;
end
end

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Answer 1

Cris LaPierre 2021-2-26

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在 MATLAB Online 中打开

If you are going to build A using nested for loops, then you need to capture the result of each loop. You are currently overwritting A each time. See this page for more and examples.

Of course, with MATLAB, you don't need the for loops. The main thing you need to create a surface is for A to be a matrix. Take advantage of MATLAB's array capabilities.

B=-10:10;

L=-10:10;

% Transpose B to take advantage of implicit expansion to create the matrix.

A=B'+L.^2;

surf(A)