Hi, I am new to MATLAB. I am not getting the plot .
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I am trying to plot N=5; A=-20:5:20; B=(1/N)*(abs((sin((N*A)/2))/(sin(A/2)))); plot(A,B)
I am not getting any error but getting only one value for B. Help please. Thank You in advance
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Accepted Answer
Chad Greene
on 28 Feb 2018
You're doing vector operations, so use the ./ when calculating B like this:
B=(1/N)*(abs((sin((N*A)/2))./(sin(A/2))));
The . before operators such as .* is the difference between a cross product and a dot product, and the same logic follows for division and exponentials.
More Answers (1)
Jim Riggs
on 28 Feb 2018
Inside the abs function you are dividing two vectors. This is where the error is.
2 Comments
Jim Riggs
on 28 Feb 2018
You should review your Matlab introductory material for operation syntax. Matlab uses different syntax to determine when a matrix operation is to be performed (as you have specified) vs. a scalar operation (as Chad has shown in his answer). You need to be familiar with these concepts.
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