About the use of imagesc

Question

Roderick 2023-3-25

0
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https://ww2.mathworks.cn/matlabcentral/answers/1935214-about-the-use-of-imagesc

回答： Adam Danz 2023-3-26

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Dear all

I am using imagesc to generate a figure using MatLab.

I have something like this:

space_x=linspace(0,40,115);
space_y=linspace(0,40,85);
matrix=rand(length(space_x),length(space_y));
imagesc(space_x,space_y,matrix)

In this case, what I obtain is that the abscissa axis increases its numerical value to the right, and the ordinate one to the top, which is what I want. However, in my case the element matrix(1,1) corresponds to space_x=0 and space_y=0. I was wondering if the way that I am saying imagesc to plot the data it is consistent, and really displays the value of matrix which corresponds to each pair of space_x and space_y values.