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Error using * inner matrix dimension must agree?

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JL555
JL555 2015-9-9
评论： Walter Roberson 2018-8-2
Error using * Inner matrix dimensions must agree.
Error in FPAeld1 (line 35)
F=Pi.*Pi*a1+Pi*b1+c1+mod(ei*sin.*(fi*(pmin-Pi)))
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Kajal Chanchalani
Kajal Chanchalani 2018-8-2
编辑：Walter Roberson 2018-8-2
xw=xn.*exp(-j*(w*n'));
Inner dimensions matrix must agrre . This is the error that i am getting
Walter Roberson
Walter Roberson 2018-8-2
In that code, size(w,2) would have to equal size(n,2) unless one of w or n is a scalar. size(j,2) would have to match size(w,1) unless one of j or (w*n') is a scalar.

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回答（1 个）

Steven Lord
Steven Lord 2015-9-9
In addition to Star Strider's comment, you have a variable named sin in your workspace but I suspect you wanted to instead call the SIN function. If so, clear the variable named sin from your workspace and remove the .* between sin and the following parenthesis in your code.
If you've defined your own Pi function, that's not really necessary either; just call the PI function like in this example.
y = sin(0:0.1:2*pi);

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