Opened 10 years ago
Last modified 8 years ago
#13812 new enhancement
unify visualize_matrix with matrix_plot
Reported by: | kcrisman | Owned by: | jason, was |
---|---|---|---|
Priority: | minor | Milestone: | sage-6.4 |
Component: | graphics | Keywords: | |
Cc: | jhpalmieri, jason, malb | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
This function (in sage.matrix.matrix_modn_sparse
and perhaps elsewhere) gives pngs that show up in the current working directory, which is not standard Sage behavior for graphics. In particular, in the notebook and EMBEDDED_MODE
they don't show up at all, anywhere (unless you have admin access, I suppose).
At #13807 (where this was originally not working anyway due to a previous bugfix), it is pointed out that visualize_matrix
does one thing that matrix_plot
does not: it lets you put a bound on the size of the figure, and then scales the picture accordingly. So if you have a 20x20 matrix and plot it in a 10x10 picture, each pixel corresponds to the entries in a 2x2 block.
There we thought it might make sense to merge this functionality into matrix_plot
and then deprecate visualize_matrix
, which after all dates from 2007. But maybe there is a reason not to do this? Anyway, any more consistent behavior would be nice here.
Change History (5)
comment:1 Changed 10 years ago by
comment:2 Changed 9 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:3 Changed 9 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:4 Changed 8 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:5 Changed 8 years ago by
- Milestone changed from sage-6.3 to sage-6.4
I wrote
visualize_structure()
back in the day for visualising the structure of dense (!) matrices over GF(2). Currently,matrix_plot()
doesn't behave as nicely asvisualize_structure()
for these matrices:Currently, both
visualize_structure()
andmatrix_plot()
seem to behave the same performance wise. We should allow a matrix to plot itself though, i.e., allow specialised code which is called bymatrix_plot()
. For example, the M4RI library can plot matrices and it is a lot faster than what we have in Sage.