Mean of several variables

Question

lukbe 2016-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/273678-mean-of-several-variables

回答： lukbe 2016-3-15

Hello i have problem. How I can solve mean of sever variables? I have variables from test1 to test100, these variables are matrices 315x573.

I know that mean is for example: pokus=mean(test1(:))

And how use for cycle to replace number of variable and make mean these variable?

When i use:

for i=1:100
   pokus(i,:)=mean(eval(['test' num2str(i)]),1);
% prumer=mean(pokus,2); 
end

I receive error:

Subscripted assignment dimension mismatch.

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Image Analyst 2016-3-15

Somehow you got yourself into a real mess. How on earth did you have 100 variables names test1 through test100? I would try to avoid that in the first place. If you put the hundred matrices into a single 3D array instead, it would be so easy - a single line of code. No for loop and no (hated) eval function.

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