Index exceeds matrix dimensions

Question

Joseph 2015-7-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/229819-index-exceeds-matrix-dimensions

回答： Walter Roberson 2015-7-15

采纳的回答： Walter Roberson

E_VJ.m

在 MATLAB Online 中打开

Hi

i'm trying to run the program below, so i have a 5*5 matrix which is y and and i'm trying to calculate E=sigma_{i,k}y(i,k)*((v+0.5)^(i-1))*((j(j+1))^(k-1)) summing over i=1:5 & k=1:5 for specific v&j and keep doing this summation for different v=1:10 and j=1:150, there for i must have a E matrix with dimension 10*150, but with the code i mentioned below, i get an error saying "Index exceeds matrix dimensions"

i attached the matlab file.

thank you

clear
clear all;
y=[0  0.243930066  -2.50171E-07  -4.652E-14  9.585E-19; 481.774655  -0.001611082  4.4226E-10  0  0; 
   -2.1018112  4.69192E-06  7.026E-12  0  0; 0.0066384  -5.282E-09  0  0  0; -0.000020255  0  0  0  0]
n=nan(10,150);
E=0
for v=1:10
    for j=1:150;
for i=1:5;
      for k=1:5;
          E(v,j,i,k)=E+y(i,k)*((v+0.5)^(i-1))*((j(j+1))^(k-1)); 
          n=E;
      end
end
      end
end