Error using plot ; spectrum of function

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geometry geometry
geometry geometry 2017-11-1
评论： geometry geometry 2017-11-2
Why I get error using the following code?
syms t w;
syms g h;
g=fourier(exp(-1*(t^2)));
h=abs(g);
w=-10.1:10.1;
plot(w,h);

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Walter Roberson
Walter Roberson 2017-11-1
plot(w, subs(h))
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Walter Roberson
Walter Roberson 2017-11-1
Worked fine when I tried on the code you posted.
If you have other code for calculating spectra then you should probably post that so we do not have to guess about what might not be working.
geometry geometry
geometry geometry 2017-11-2
Yes thanks! I'm sorry it works fine. (I was using fplot instead of plot).

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更多回答（1 个）

Karan Gill
Karan Gill 2017-11-1
Plot symbolic functions by using fplot.
fplot(h)
See https://www.mathworks.com/help/symbolic/fplot.html
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geometry geometry
geometry geometry 2017-11-1
Thanks but it doesn't plot spectrum of f(t) correctly. I want to plot the spectrum of arbitrary function for example exp(-t^2) , dirac(t), ...
could you help me?

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