Re: [eigen] cast ArrayXd* to ArrayXXd*

[Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 26.09.2012 18:48, Holger Herrlich wrote:
> I finally needed it to run this: (and can avoid casting)
> a1_2D->colwise() = *a1_1D;
> *a2_2D = a2_2D->binaryExpr( *a1_2D, ptr_fun<double,double,double>(fn));
>
> Well, I choose to use "new" because I don't know the array size at
> calling the function. Also avoided the call by reference parameter while
> it was not that clear how the interface to python looks like later on.

There is a resize(rows, cols) method and instead of returning a pointer, 
you can return an ArrayXd by value and hope for good-enough RVO (return 
value optimization).
If you need the pointer interface, because of Python, I'm afraid I can't 
help much ...



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Dipl.-Inf. Christoph Hertzberg
Cartesium 0.049
Universität Bremen
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