how to fix this error 'interp2'

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BA 2022-7-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1769835-how-to-fix-this-error-interp2

编辑： Matt J 2022-7-28

imshow(matrix(:,:,1))
%identify axes
[x y] = ginput(2);
% preallocate matrices
cog = zeros(size(matrix,3),1);
%cog
% loop start
for i = 1:size(matrix,3)
    I = matrix(:,:,i);
    
    n = ceil(norm([diff(x), diff(y)]));  
    
    test = interp2(I, linspace(x(1), x(2),n), linspace(y(1), y(2),n));
    
    cog(i) = sum((1:length(test)).*test')/sum(test);
    % loop end
end
scog = (cog - min(cog)) / (max(cog) - min(cog));

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回答（1 个）

Matt J 2022-7-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1769835-how-to-fix-this-error-interp2#answer_1016925

Because your first argument to interp2 is a matrix while the second is a scalar.

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Matt J 2022-7-28

编辑：Matt J 2022-7-28

This is the error I get:

That is not what a Matlab error message looks like. As a routine matter, you should copy/paste error output messages in their entirety.

Steven Lord 2022-7-28

From these questions: 1, 2 it sounds like the poster is using Octave rather than MATLAB. If that's the case, that would explain the difference in the appearance of the error message.

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