DOC: Disable extra plot formats if not release mode

Author: QuLogic

doc/conf.py

@@ -542,13 +542,28 @@ def _check_dependencies():
 # graphviz_output_format = 'svg'
 
 
+def reduce_plot_formats(app):
+    if app.builder.name == 'html':
+        keep = 'png'
+    elif app.builder.name == 'latex':
+        keep = 'pdf'
+    else:
+        return
+    app.config.plot_formats = [entry
+                               for entry in app.config.plot_formats
+                               if entry[0] == keep]
+
+
 def setup(app):
     if any(st in version for st in ('post', 'alpha', 'beta')):
         bld_type = 'dev'
     else:
         bld_type = 'rel'
     app.add_config_value('releaselevel', bld_type, 'env')
 
+    if not _doc_release_mode:
+        app.connect('builder-inited', reduce_plot_formats)
+
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