Merge PR # (Fix dynamic ratio colorbar min/max values)

This merge brings PR #344 (Fix computation of dynamic ratio colorbar
min/max values in six_plot.py in six_plot.py, by @yantosca) into the
GCPy 1.6.0 development stream.

This PR fixes an issue where the dynamic ratio plots (in 6-panel
comparison plots) under certain conditions had a too-narrow colorbar
range to represent the actual data values.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

CHANGELOG.md

@@ -32,6 +32,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Fixed
 - Fixed formatting error in `.github/workflows/stale.yml` that caused the Mark Stale Issues action not to run
 - Now flag differences greater than +/- 10% in benchmark timing table outputs
+- Fixed error in computation of dynamic ratio plot min & max values in `plot/six_plot.py`
 
 ### Removed
 - Removed `gcpy/benchmark/modules/species_database.yml` file and corresponding code pointing to this

gcpy/plot/six_plot.py

@@ -544,10 +544,10 @@ def vmin_vmax_for_ratio_plots(
     """
     # Ratio (dynamic range) subplot)
     if subplot in "dyn_ratio":
-        vmax = np.max(
+        vmin = np.min(
             [np.abs(np.nanmin(plot_val)), np.abs(np.nanmax(plot_val))]
         )
-        vmin = 1.0 / vmax
+        vmax = 1.0 / vmin
         if vmin > vmax:
             vmin, vmax = vmax, vmin
         verbose_print(verbose, rowcol, vmin, vmax)