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Getting the error of inner dimensions must agree
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Below is the code for which I am getting the error
deltapsi=(-40:5:30)
deltathi=(9*(deltapsi.^2))/(8*3.142);
p=1
S=sin(deltathi-deltapsi)-(p*sin(deltapsi)*sin(deltathi));
The error is
Error using *
Inner matrix dimensions must agree.
Error in Untitled (line 4)
S=sin(deltathi-deltapsi)-(p*sin(deltapsi)*sin(deltathi));
I need to plot S versus deltapsi
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Réponses (2)
Abdullah Nasir
le 3 Fév 2018
1 commentaire
Walter Roberson
le 6 Fév 2018
The .* operator is formally called times and multiplies corresponding elements in two arrays that are the same size. It can be used for arrays of more than 2 dimensions. https://www.mathworks.com/help/matlab/ref/times.html
The * operator that you used is formally called mtimes, and is algebraic matrix multiplication. The two arrays it multiplies are not generally the same size, but must be 2D, and the number of columns of the first array must equal the number of rows of the second array -- P x N * N x Q giving P x Q. https://www.mathworks.com/help/matlab/ref/mtimes.html
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