Merge pull request matplotlib#26567 from ayshih/svg

Use SVG inheritance diagrams now that linking has been fixed

Author: timhoffm

doc/conf.py

@@ -738,16 +738,14 @@ def js_tag_with_cache_busting(js):
 numpydoc_show_class_members = False
 
 # We want to prevent any size limit, as we'll add scroll bars with CSS.
-inheritance_graph_attrs = dict(dpi=100, size='1000.0', splines='polyline')
+inheritance_graph_attrs = dict(size='1000.0', splines='polyline')
 # Also remove minimum node dimensions, and increase line size a bit.
 inheritance_node_attrs = dict(height=0.02, margin=0.055, penwidth=1,
                               width=0.01)
 inheritance_edge_attrs = dict(penwidth=1)
 
 graphviz_dot = shutil.which('dot')
-# Still use PNG until SVG linking is fixed
-# https://github.com/sphinx-doc/sphinx/issues/3176
-# graphviz_output_format = 'svg'
+graphviz_output_format = 'svg'
 
 # -----------------------------------------------------------------------------
 # Source code links