Add plot highlighting directories with very few authors

Author: JohT

jupyter/GitHistoryGeneral.ipynb

@@ -766,6 +766,44 @@
     "figure.show(**plotly_treemap_figure_show_settings)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "485b5194",
+   "metadata": {},
+   "source": [
+    "### Directories with very few different authors"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3175be23",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "git_commit_authors_per_directory_low_focus = add_quantile_limited_column(git_files_with_commit_statistics, \"authorCount\", 0.33)\n",
+    "\n",
+    "author_count_top_limit = git_commit_authors_per_directory_low_focus['authorCount_limited'].max().astype(int).astype(str)\n",
+    "author_count_top_limit_label_alias = {author_count_top_limit: author_count_top_limit + ' or more'}\n",
+    "\n",
+    "figure = plotly_graph_objects.Figure(plotly_graph_objects.Treemap(\n",
+    "    create_treemap_commit_statistics_settings(git_commit_authors_per_directory_low_focus),\n",
+    "    # Without values, much more squares are shown which gives a much better overview. The drawback is that the fileCount isn't visible.\n",
+    "    # values = git_commit_authors_per_directory['fileCount'],\n",
+    "    marker=dict(\n",
+    "        **plotly_treemap_marker_base_colorscale,\n",
+    "        colors=git_commit_authors_per_directory_low_focus['authorCount_limited'], \n",
+    "        colorbar=dict(title=\"Authors\", labelalias=author_count_top_limit_label_alias),\n",
+    "        reversescale=True\n",
+    "    ),\n",
+    "))\n",
+    "figure.update_layout(\n",
+    "    **plotly_treemap_layout_base_settings,\n",
+    "    title='Number of distinct commit authors (red/black = ony one or very few authors)',\n",
+    ")\n",
+    "figure.show(**plotly_treemap_figure_show_settings)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "5dbceaef",