having problem with mvnrnd...

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Nadhirah Jofri
Nadhirah Jofri 2015-8-5
回答： Roya Kakar 2022-1-19
i'm having problem with the mvnrnd.. its when i run the coding, it says "Undefined function'mvnrnd' for input arguments of type 'double'".. the coding is below..i don't know if i'm overlook at certain part..help me please.. i'm new to Matlab.
X1=mvnrnd(mu1,sigma,n1);

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采纳的回答

Al Dente
Al Dente 2015-8-5
matlab is basically telling you that it can't find the function:
which mvnrnd
will probably result in: 'mvnrnd' not found
mvnrnd is part of the statistics toolbox, type 'ver' in matlab and see if you have it.
ver
% Stateflow Coder Version 7.6.1 (R2010bSP1)
% Statistics Toolbox <-- Version 7.4 (R2010bSP1)
% Symbolic Math Toolbox Version 5.5 (R2010bSP1)
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Nadhirah Jofri
Nadhirah Jofri 2015-8-5
erm..ok, it seems like i don't have that Statistic toolbox.. thanks for the info...

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更多回答（2 个）

Roya Kakar
Roya Kakar 2022-1-19
I don't have Statistics Toolbox in my Matlab, how can I get it?
Roya Kakar
Roya Kakar 2022-1-19
function p = mygmm(x1,x2, w1, mu1, sigma1, w2, mu2, sigma2)
assert(w1 +w2 == 1.0, 'The weights of the components must add to 1.0')
assert(all([w1 w2] >= 0 & [w1 w2] <=1)),
p = w1 * mvnpdf([x1 x2], mu1, sigma1) + w2 * mvnpdf([x1 x2] , mu2, sigma2);
end
By running the above code I get the following error message:
Not enough input arguments.

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