ENH: Add display.html.use_mathjax option (pandas-dev#19824).

Default value is True to maintain existing behavior.

Author: David Hall

doc/source/options.rst

@@ -402,6 +402,10 @@ display.html.table_schema               False        Whether to publish a Table
 display.html.border                     1            A ``border=value`` attribute is
                                                      inserted in the ``<table>`` tag
                                                      for the DataFrame HTML repr.
+display.html.use_mathjax                True         When True, IPython notebook will process 
+                                                     table contents using MathJax, rendering 
+                                                     mathematical expressions enclosed by the 
+                                                     dollar symbol.
 io.excel.xls.writer                     xlwt         The default Excel writer engine for
                                                      'xls' files.
 io.excel.xlsm.writer                    openpyxl     The default Excel writer engine for

pandas/core/config_init.py

@@ -207,6 +207,12 @@ def use_numexpr_cb(key):
 (currently both are identical)
 """
 
+pc_html_use_mathjax_doc = """\
+: boolean
+    When True, IPython notebook will process table contents using MathJax,
+    rendering mathematical expressions enclosed by the dollar symbol.
+    (default: True)
+"""
 
 pc_width_doc = """
 : int
@@ -358,6 +364,8 @@ def table_schema_cb(key):
                        validator=is_bool, cb=table_schema_cb)
     cf.register_option('html.border', 1, pc_html_border_doc,
                        validator=is_int)
+    cf.register_option('html.use_mathjax', True, pc_html_use_mathjax_doc,
+                       validator=is_bool)
 
 with cf.config_prefix('html'):
     cf.register_option('border', 1, pc_html_border_doc,

pandas/core/frame.py

@@ -674,8 +674,14 @@ def _repr_html_(self):
             max_rows = get_option("display.max_rows")
             max_cols = get_option("display.max_columns")
             show_dimensions = get_option("display.show_dimensions")
+            use_mathjax = get_option("display.html.use_mathjax")
+
+            classes = []
+            if not use_mathjax:
+                classes.append('tex2jax_ignore')
 
             return self.to_html(max_rows=max_rows, max_cols=max_cols,
+                                classes=classes,
                                 show_dimensions=show_dimensions, notebook=True)
         else:
             return None