Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

Question

Sevil Cansu Yildirim 2019-3-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/451766-unable-to-perform-assignment-because-the-indices-on-the-left-side-are-not-compatible-with-the-size-o

回答： Sevil Cansu Yildirim 2019-3-22

Hello,

farfieldvelocity = [-100:.01:100] % velocity est.
lockingdepth = [-100:.01:100] % locking depth est.
for i = 1:length(lockingdepth);
    for j = 1:length(farfieldvelocity);
        v_e_est = (farfieldvelocity(j)./ pi).* atan(dist./lockingdepth(i));
        e = v_est - v_e; 
        CF(j,i) = e'*e;
    end
end

Here I always get the error "Unable to perform assignment because the indices on the left side are not compatible with the size of the right side." for the line CF(j,i) = e'*e

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

James Tursa 2019-3-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/451766-unable-to-perform-assignment-because-the-indices-on-the-left-side-are-not-compatible-with-the-size-o#answer_366870

What is size(dist) and size(v_e)? If these are row vectors, then maybe you need to do e*e' instead to get a scalar result.

4 个评论
显示 2更早的评论隐藏 2更早的评论

James Tursa 2019-3-22

From Sevil:

I am sorry but did not work.

James Tursa 2019-3-22

在 MATLAB Online 中打开

Sorry I misread your variables. What is size(v_est)? And what is the variable v_e_est supposed to be used for? Is this what was meant:

e = v_e_est.' - v_e; % make e a column vector

请先登录，再进行评论。

Answer 2

Sevil Cansu Yildirim 2019-3-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/451766-unable-to-perform-assignment-because-the-indices-on-the-left-side-are-not-compatible-with-the-size-o#answer_366898

在 MATLAB Online 中打开

for i = 1:length(lockingdepth);
    for j = 1:length(farfieldvelocity);
        v_e_est = (farfieldvelocity(j)./ pi).* atan(dist./lockingdepth(i));
        e = v_e_est - v_e;
        CF(j,i) = e.*e';
    end
end