Undefined function 'plotSpec' for input arguments of type 'double'

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Bahaa Algebory
Bahaa Algebory 2016-7-29
评论： Walter Roberson 2019-8-26
Hello,
The following code should give the following graph, but there is an error appearing which is "Undefined function 'plotSpec' for input arguments of type 'double'." So, any one knows what is the problem?
Thanks,
f=10;
time=2;
Ts=1/1000;
t=Ts:Ts:time;
x=sign(cos(2*pi*f*t));
plotSpec(x,Ts)

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采纳的回答

Walter Roberson
Walter Roberson 2016-7-29
plotSpec is not a function in any MATLAB toolbox.
I find plotspec (lower case 'S') defined in a couple of user-contributed files that look like homework; the files vary too much to say that "plotspec" has a well-defined purpose.

更多回答（1 个）

Ronald Leon
Ronald Leon 2019-8-25
Hi i tried even the lower case one but still says error in plot spec

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