Why function "exprnd" is not available in matlab R2008b

Just as the title. Could you give me a hand? Thanks all.

Answer 1

[Walter Roberson]

exprnd is part of the Statistics Toolbox, which is an optional product for Commercial and Academic licenses.

The Statistics Toolbox is included in the Student Version licenses but the Toolbox might not be installed by default. I note that you are using R2008b, which has the only Student Version release (so far) that ends in 'b', so you might be using Student Version.

exprnd is part of the R2008b Statistics Toolbox.

[Bolong]

Thanks for your answer, that means I probably need to install a "student version" matlab product if I want to use the function exprnd?

[Tom Lane]

I don't think I'd be giving away valuable secrets by telling you that exprnd is a relatively simple function:

>> rng(0)
>> exprnd(5,2,3)
ans =
    1.0245   10.3184    2.2915
    0.4947    0.4530   11.6374
>> rng(0)
>> -5*log(rand(2,3))
ans =
    1.0245   10.3184    2.2915
    0.4947    0.4530   11.6374