Re: [Help-glpk] Visualize Matrix A (in Ax = b)

[Andrew Makhorin]

> Few days back, there was a discussion on the mailing list about
> sparse and dense constraint coefficient matrices. I thought it would
> be nice to be able to visualize matrix A and "see" how much sparse it
> is. This might help verify, understand and debug LP/MIP models created
> using MathProg.

Glpk includes some internal routines for such purpose (see glpspm.c),
in particular, spm_show_mat to write the sparse matrix pattern in bitmap
format. However, I do not know if it is reasonable to carry out such
routines on api level.