Re: [eigen] Question about ColMajor vs. RowMajor

[Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 17.12.2011 04:38, Rhys Ulerich wrote:
> > I assume you compiled with -DNDEBUG or something similar?
> > IIRC operator() with single argument should only be used for
> > single-dimensional matrices (i.e. vectors).
> >
> > Actually (question to Gael/Benoit): Shouldn't there be a compile-time
> > check/static assertion for operator(), making it work only on matrices which
> > are known at compile-time to have (at least) one dimension fixed to 1?
> >
> > Or is operator()(int) supposed to mime the MATLAB behavior of mat(i) now
> > (i.e. viewing the matrix data as a vector)?
>
> The docs mention that operator()(Index) is available when
> LinearAccessBit is set
> (http://eigen.tuxfamily.org/dox/group__flags.html).

Ok, good to know. I'm pretty sure though it was prohibited once (or 
LinearAccessBit was not set by default) and I never tried it recently.

Christoph




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Dipl.-Inf. Christoph Hertzberg
Cartesium 0.051
Universität Bremen
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