Error using plot - Vectors must be the same lengths.

Question

K BV 2012-6-8

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40621-error-using-plot-vectors-must-be-the-same-lengths

Hi,

I got the error in the title of my question after running this part of code :

for i=1:size(X,3) % X is a MRI images sequence, it contains 30 images
    ENDO = roipoly(size(X,1),size(X,2),XXendo(i,:),YYendo(i,:));  
    EPI = roipoly(size(X,1),size(X,2),XXepi(i,:),YYepi(i,:));  
    MYO = EPI-ENDO; 
    for j=1:6 % 6 is the number of myocardium sectors / segments
        figure, plot((1:size(X,3)),(BW(:,:,j).*MYO))
    end 
end

The aim of this script is to plot the evolution of the 6 myocardium segments during the heart cycle (equivalent to 30 images).

ENDO is the endocardium, all the values inside it are equal to 1 and the values outside are equals to 0.

EPI is the endocardium, all the values inside it are equal to 1 and the values outside are equals to 0.

The size of BW is 162x174x6 and the size of MYO is 162x174. How can I fix this problem ?

Thank you for your help !

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Answer 1

Andrei Bobrov 2012-6-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40621-error-using-plot-vectors-must-be-the-same-lengths#answer_50282

在 MATLAB Online 中打开

Please try EDIT2

n = size(X);
for i1=1:n(3) % X is a MRI images sequence, it contains 30 images
    ENDO = roipoly(n(1),n(2),XXendo(i1,:),YYendo(i1,:));  
    EPI = roipoly(n(1),n(2),XXepi(i1,:),YYepi(i1,:));  
    MYO = EPI-ENDO; 
    for j1=1:6 % 6 is the number of myocardium sectors / segments
        figure,imshow(BW(:,:,j1).*MYO);
    end 
end