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firephenix405
Joined: 19 Apr 2003
Posts: 79
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 12 Oct 2004 0:45 how to depict the histogram envelop in matlab |
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I generate a sequence of random variable in Matlab, and sketch its histogram using function hist(), but now I want to sketch its histogram envelop, not only histogram,
how should I do??
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amraldo
Joined: 29 Aug 2004
Posts: 248
Helped: 22
Location: egypt, cairo
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| 12 Oct 2004 1:23 Re: how to depict the histogram envelop in matlab |
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| d u mean by envelope the frequency curve?
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firephenix405
Joined: 19 Apr 2003
Posts: 79
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| 12 Oct 2004 3:16 how to depict the histogram envelop in matlab |
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| right, contour curve
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amraldo
Joined: 29 Aug 2004
Posts: 248
Helped: 22
Location: egypt, cairo
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| 12 Oct 2004 13:49 Re: how to depict the histogram envelop in matlab |
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u can use the histc as follows
[N,C]=histc(A,n);
%N is an array of histogram amplitudes
%C is an array of corresponding centers
%A is the array of input data
%n is the number of segments of the histogram
%i.e. n =length(N) or length(C)
plot(C,N);
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