the next code without for loop display accurately results but when use the loop show error "Assignment has more non-singleton rhs dimensions than non-singleton subscripts", why ? and What can I do to solve this problem?

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mohammed elmenshawy 2016-8-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/299810-the-next-code-without-for-loop-display-accurately-results-but-when-use-the-loop-show-error-assign

评论： mohammed elmenshawy 2016-8-24

for i=1:30
    b(i,:,:)=nonzeros(A(i,:,:));
    bb(i,:,:)=unique(b(i,:,:));
    bbb(i)=sum(bb(i,:,:))/length(bb(i,:,:));
end

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John BG 2016-8-17

not enough data.

Please supply the chunk of code that we can reproduce, and get the same error.

Simplify anything you don't want to explain, but without code that can be readily reproduced, you force readers to a lot of guesswork without clear aim.

Awaiting answer

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Answer 1

Image Analyst 2016-8-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/299810-the-next-code-without-for-loop-display-accurately-results-but-when-use-the-loop-show-error-assign#answer_231984

在 MATLAB Online 中打开

See this: http://www.mathworks.com/matlabcentral/answers/13205#answer_18099

Also, look up what length() and squeeze() do (you might be surprised). Next, assign some of those things to intermediate variables before sending them into unique(), length() and other functions and see what their sizes are by using THE DEBUGGER

For example:

temp1 = bb(i,:,:);
whos temp1
temp2 = length(temp1);
whos temp2
temp3 = sum(temp1);
whos temp3
bbb(i)= temp3 / temp2;

It's just basic debugging.

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Image Analyst 2016-8-24

Get rid of the "whos" commands and put semicolons at the end of every line to suppress echoing results to the command window.

mohammed elmenshawy 2016-8-24

thank u very very much

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the next code without for loop display accurately results but when use the loop show error "Assignment has more non-singleton rhs dimensions than non-singleton subscripts", why ? and What can I do to solve this problem?

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the next code without for loop display accurately results but when use the loop show error "Assignment has more non-singleton rhs dimensions than non-singleton subscripts", why ? and What can I do to solve this problem?

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