Re: [eigen] How to resize a partially fixed matrix

[Benoit Jacob <jacob.benoit.1@xxxxxxxxx>]

2009/6/24 Markus <grey_earl@xxxxxx>:
> Am Mittwoch, 24. Juni 2009 schrieb Benoit Jacob:
>> First of all the variant proposed:
>> >> So I'm strongly for your code change, but changing the assertion to
>> >> EIGEN_STATIC_ASSERT_EXACTLY_ONE_DYNAMIC_DIM(Matrix)
>>
>> doesn't make me comfortable, again because a method that works for
>> (partially)dynamic matrices should also work on fixed-size matrices of
>> the same size, I am very reluctant here.
>>
>> So here's what I did (changeset b030f9866bae):
>>     * add resize(int, NoChange) and resize(NoChange, int)
>>     * add missing assert in resize(int)
>>     * add examples for all resize variants
>>     * expand docs (part of which is from Tim Hutt's e-mail)
>>
>> Now if you want we can add another name (or completely rename) the new
>> resize(int, NoChange) and resize(NoChange, int).
>> But perhaps it's good enough like this? i don't have a strong opinion.
>> resizeHoriz(size) and colwise().resize(size) look nice but they aren't
>> much shorter to type than resize(NoChange,size);
>>
>> Cheers,
>> Benoit
>>
>
> Does this also work for fully dynamic matrices now?
>
> So if I have
>
> Matrix<double, Dynamic, Dynamic> mat;
> mat.resize(3,3);
> mat.resize(NoChange, 5);
>
> does this work? If yes, everything fine with me.

Yes, this works. note that resize(NoChange,int) is very very trivial:
code from Matrix.h:

    inline void resize(NoChange_t, int cols)
    {
      resize(rows(), cols);
    }

Benoit

>
> Markus
>
>
>