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 !

Answer 1

[Andrei Bobrov]

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

[K BV]

Thank you ! It is working now :-)