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fix a center of gravity loop

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BA
BA 2022-7-27
关闭： Image Analyst 2022-7-28
imshow(matrix(:,:,1))
%identify axes
[x, y] = ginput(2);
% preallocate matrices
cog = zeros(size(matrix,3),1);
% the loop does not work and the error in the cog(i) line
% loop start
for i = 1:size(matrix,3)
I = matrix(:,:,i);
test = improfile(I,[x(1) x(2)],[y(1) y(2)]);
%the error comes from this line
cog(i) = sum((1:length(test)).*test)/sum(test);
% loop end
end
scog = (cog - min(cog)) / (max(cog) - min(cog));
  1 个评论
Matt J
Matt J 2022-7-27
You need to demonstrate the code and show us the error messages.

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采纳的回答

David Hill
David Hill 2022-7-27
cog(i) = sum((1:length(test)).*test')/sum(test); %need to transpose test' to match dimensions
  1 个评论
BA
BA 2022-7-27
编辑：BA 2022-7-27
Fab. it works perfectly. I have another question: what is the equivalent of 'improfile' in octave? I mean to change the 'improfile' line to work in octave

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