Re: [eigen] Eigen::Matrix and cv::Mat conversions

[lfrfly@xxxxxxxxxxx]

> Eigen defaults to column-major.

Curious, is there a reason for this? When writing loops, most C and C++ 
programmers have ingrained the "columns as inner loop" philosophy for 
efficiency. Now, presumably Eigen matrices are not intended to be 
manually looped over too often, but it's still a curious choice.

All I can think of is that it's to simplify interactions with LAPACK 
implementations.

> If you want row-major with Eigen you can do:
> typedef Matrix<float,2,2,RowMajor> MyRowMajorMatrixType;

That's what I need, thanks.