Update dashboard.py

dashboard.py

@@ -85,24 +85,33 @@ def create_type_bar_charts(entRelsButton, **kwargs):
 def create_type_pie_charts(entRelsButton, **kwargs):
     if entRelsButton == 'Entity':
         dictionary = entityTypesFreqMap
-        return hv.Pie(dictionary, kdims='Entity Types', vdims='Frequency').opts(
-            cmap='Category20',
-            labels='Frequency',
-            legend_position='right',
-            width=600,
-            height=600,
-            fontsize={'labels': 12, 'legend': 10}
-        )
+        data = pd.Series(dictionary).reset_index(name='Frequency').rename(columns={'index': 'Entity'})
+        data['angle'] = data['Frequency']/data['Frequency'].sum() * 2*pi
+        data['color'] = Category20c[len(x)]
+        p = figure(height=350, title="Pie Chart", toolbar_location=None,
+           tools="hover", tooltips="@Entity: @Frequency", x_range=(-0.5, 1.0))
+        p.wedge(x=0, y=1, radius=0.4,start_angle=cumsum('angle', include_zero=True), end_angle=cumsum('angle'),
+        line_color="white", fill_color='color', legend_field='Entity', source=data)
+        p.axis.axis_label = None
+        p.axis.visible = False
+        p.grid.grid_line_color = None
+        
+        return p
+        
     elif entRelsButton == 'Relation':
         dictionary = relationTypesFreqMap
-        return hv.Pie(dictionary, kdims='Relation Types', vdims='Frequency').opts(
-            cmap='Category20',
-            labels='Frequency',
-            legend_position='right',
-            width=600,
-            height=600,
-            fontsize={'labels': 12, 'legend': 10}
-    )
+        data = pd.Series(dictionary).reset_index(name='Frequency').rename(columns={'index': 'Relation'})
+        data['angle'] = data['Frequency']/data['Frequency'].sum() * 2*pi
+        data['color'] = Category20c[len(x)]
+        p = figure(height=350, title="Pie Chart", toolbar_location=None,
+           tools="hover", tooltips="@Entity: @Frequency", x_range=(-0.5, 1.0))
+        p.wedge(x=0, y=1, radius=0.4,start_angle=cumsum('angle', include_zero=True), end_angle=cumsum('angle'),
+        line_color="white", fill_color='color', legend_field='Relation', source=data)
+        p.axis.axis_label = None
+        p.axis.visible = False
+        p.grid.grid_line_color = None
+
+        return p
 
       
 def create_ent_bar_charts(ents, **kwargs):
@@ -356,7 +365,7 @@ def CreatePage3():
     return pn.Column(
         pn.pane.Markdown("## Entity/Relation Types "),
         entRelsButton,
-        pn.bind(create_type_bar_charts, entRelsButton),
+        pn.bind(create_type_pie_charts, entRelsButton),
         align="center",
     )