From 1531bb16a1e9a66c7dd5734ca2cd3c16ca6996f9 Mon Sep 17 00:00:00 2001
From: Philipp Rudiger <prudiger@anaconda.com>
Date: Tue, 9 Jul 2019 14:48:23 +0200
Subject: [PATCH] Fixed legends for PathPlot

---
 holoviews/plotting/bokeh/element.py | 7 ++++---
 holoviews/plotting/bokeh/path.py    | 4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/holoviews/plotting/bokeh/element.py b/holoviews/plotting/bokeh/element.py
index f83becc4c1..5d431737fc 100644
--- a/holoviews/plotting/bokeh/element.py
+++ b/holoviews/plotting/bokeh/element.py
@@ -1030,12 +1030,11 @@ def _apply_transforms(self, element, data, ranges, style, group=None):
                     else:
                         factors = util.unique_array(val)
                     kwargs['factors'] = factors
-                    if factors is not None and getattr(self, 'show_legend', False):
-                        new_style['legend'] = key
                 cmapper = self._get_colormapper(v, element, ranges,
                                                 dict(style), name=k+'_color_mapper',
                                                 group=group, **kwargs)
-                if isinstance(cmapper, CategoricalColorMapper) and val.dtype.kind in 'ifMu':
+                categorical = isinstance(cmapper, CategoricalColorMapper)
+                if categorical and val.dtype.kind in 'ifMu':
                     if v.dimension in element:
                         formatter = element.get_dimension(v.dimension).pprint_value
                     else:
@@ -1044,6 +1043,8 @@ def _apply_transforms(self, element, data, ranges, style, group=None):
                     data[k+'_str__'] = [formatter(d) for d in val]
                 else:
                     field = k
+                if categorical and getattr(self, 'show_legend', False):
+                    new_style['legend'] = field
                 key = {'field': field, 'transform': cmapper}
             new_style[k] = key
 
diff --git a/holoviews/plotting/bokeh/path.py b/holoviews/plotting/bokeh/path.py
index 9d5504f899..d3a33722ac 100644
--- a/holoviews/plotting/bokeh/path.py
+++ b/holoviews/plotting/bokeh/path.py
@@ -15,7 +15,7 @@
 from .util import bokeh_version, multi_polygons_data
 
 
-class PathPlot(ColorbarPlot):
+class PathPlot(LegendPlot, ColorbarPlot):
 
     show_legend = param.Boolean(default=False, doc="""
         Whether to show legend for the plot.""")
@@ -143,7 +143,7 @@ def get_batched_data(self, element, ranges=None):
         return data, elmapping, style
 
 
-class ContourPlot(LegendPlot, PathPlot):
+class ContourPlot(PathPlot):
 
     show_legend = param.Boolean(default=False, doc="""
         Whether to show legend for the plot.""")