Error due to matrix dimensions not being consistent

Question

micheal marembo 2020-2-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/505959-error-due-to-matrix-dimensions-not-being-consistent

关闭： MATLAB Answer Bot 2021-8-20

Hello everyone,

Below is a code i am trying to write. When I run it, I get errors due to matrix dimensions. May I know how to solve such errors please,thanks.

      function h = mtimes(u,v)
          % Multiplication with matrix or scalar: `h = u*v`
          if ~isa(u,'ADI') %u is a scalar/matrix
              h = v;
              h.val = u.*(h.val);
              h.jac = ADI.mtimesJac(u, h.jac);
          elseif ~isa(v,'ADI') %v is a scalar
              h = mtimes(v,u);
          else % special case where either u or v has single value
              if numel(u.val) == 1
                  h = u;
                  h.val = times(u.val, v.val);
                  h.jac = ADI.timesJacUnit(u.val, v.val, u.jac, v.jac);
              elseif numel(v.val) == 1
                  h = u;
                  h.val = times(u.val, v.val);
                  h.jac = ADI.timesJacUnit(v.val, u.val, v.jac, u.jac);
              else
                  error('Operation not supported');
              end
          end
      end

the errors are;

Error using  .* 
Matrix dimensions must agree.
Error in  *  (line 161)
              h.val = u.*(h.val);

3 个评论
显示 1更早的评论隐藏 1更早的评论

micheal marembo 2020-2-18

编辑：Rik 2020-2-18

在 MATLAB Online 中打开

ADI.m

Hello, attached is the code for the ADI class and the persistent errors are also attached at the end of the code, Thank you.

Edit Rik: moved class definition to attachment

The following are the errors;

Error in  *  (line 162)
              h.val = u*(h.val);
Error in  .*  (line 191)
                 h = mtimes(u,v);

Thank you

Rik 2020-2-18

To keep the thread readable I moved the classdef to an attachment and edited your comment for you. Next time, please use the tools explained on this page to make your posts more readable.

Can you provide the code you are using to reproduce this error? (also, posting code in this forum sometimes removes blank lines, so the line numbers in your errors don't line up with the code anymore.

请先登录，再回答此问题。