Add pygraf plotting support

[danielabdi-noaa]

Description

RRFS_dev1 branch uses pygraf for plotting. I think this should be incorporated back into SRW even though it may not be run operationally for two reasons. First, visual verification of results of SRW against the RRFS_dev1 branch. Second, the plots look more high quality to me than the current SRW plot_allvars.py scripts. It also seems to have option to make diff plots so it may replace the plot_allvars/diff.py scripts in the future.

Solution

Add pygraf plotting library support

Requirements**

Would need update of required plotting libraries in the EPIC stack. See issue #561

Acceptance Criteria (Definition of Done)

Should be able to produce graphics using pygraf library

Dependencies (optional)

None

Alternative Solutions (optional)

Keep using plot_allvars

[gspetro-NOAA]

@christinaholtNOAA @danielabdi-noaa It looks like the PR related to this was closed a while ago. Can the issue be closed?

[christinaholtNOAA]

This is no longer a desired feature.