Merge pull request #822 from tylerjereddy/treddy_matplotlib_join_dep

MAINT: mpl join() deprecation

Author: shanedsnyder

.github/workflows/main_ci.yml

@@ -73,7 +73,7 @@ jobs:
           # to check HPC spack installs for example
           cd $RUNNER_TEMP
           site_packages=$(pip show darshan | grep Location | cut -d ' ' -f 2)
-          pytest -W error::FutureWarning --pyargs darshan --cov-report xml --cov=$site_packages/darshan
+          pytest -W error::FutureWarning -W error:"The join function was deprecated in Matplotlib" --pyargs darshan --cov-report xml --cov=$site_packages/darshan
       # Python 3.6 doesn't have access to some
       # dependencies needed for our type hints
       - if: ${{matrix.python-version > 3.6}}

darshan-util/pydarshan/darshan/experimental/plots/data_access_by_filesystem.py

@@ -530,10 +530,10 @@ def plot_data(fig: Any,
                                               2,
                                               row * 2 + 2)
         if row > 0:
-            ax_filesystem_bytes.get_shared_x_axes().join(ax_filesystem_bytes, list_byte_axes[row - 1])
+            ax_filesystem_bytes.sharex(list_byte_axes[row - 1])
             if use_log[0]:
                 ax_filesystem_bytes.set_xscale('symlog')
-            ax_filesystem_counts.get_shared_x_axes().join(ax_filesystem_counts, list_count_axes[row - 1])
+            ax_filesystem_counts.sharex(list_count_axes[row - 1])
             if use_log[1]:
                 ax_filesystem_counts.set_xscale('symlog')