Error using * inner matrix dimension must agree?

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)))

[Kajal Chanchalani]

xw=xn.*exp(-j*(w*n'));

Inner dimensions matrix must agrre . This is the error that i am getting

[Walter Roberson]

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.

Answer 1

[Steven Lord]

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);

[Star Strider]

Thank you. Overlooked that.