From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2006-02-03T01:48:30+09:00
Subject: Re: WIN32OLE extension using in/out SAFEARRAYs (Matlab interface)

> -----Original Message-----
> From: Ryan Hinton [mailto:iobass@email.com] 
> Sent: Wednesday, February 01, 2006 2:49 PM
> To: ruby-talk ML
> Subject: WIN32OLE extension using in/out SAFEARRAYs (Matlab interface)
> 
> 
> I am having trouble calling a COM object (Matlab) using the 
> excellent WIN32OLE Ruby extension.  Several other calls have 
> worked fine, but this call involves some in/out SAFEARRAYs.  
> Here is the method signature.
> 
> GetFullMatrix([in] BSTR varname, [in] BSTR workspace,
>               [in, out] SAFEARRAY(double) *pr,
>               [in, out] SAFEARRAY(double) *pi)
> 
> The server uses the sizes of the arrays pr and pi to fill 
> them with the requested data--hence their dual in/out nature. 
>  Does anyone know how to properly make a call like this?  Is 
> it possible?  My most successful attempts have given me the 
> following error.
> 
> WIN32OLERuntimeError: GetFullMatrix
>     OLE error code:0 in <Unknown>
>       <No Description>
>     HRESULT error code:0x80020005
>       Type mismatch.
>         from (irb):30:in `method_missing'
>         from (irb):30
>         from :0
> 
> In case you're running on Windows with Matlab installed, here 
> is the code I am using.
> 
> require 'win32ole'
> matlab = WIN32OLE.new('Matlab.Application')
> matlab.Execute('bob = 1:5;')
> t1 = Array.new(5, 0.0)
> t2 = t1.dup
> t3 = matlab.GetFullMatrix('bob', 'base', t1, t2)

I can't answer your question directly, but a search on "getfullmatrix" +
"perl" revealed some Matlab examples that you might be able to borrow
from.

Regards,

Dan