```
from bokeh.models import HoverTool
hover = HoverTool(tooltips=None, mode='vline')
p3.add_tools(hover)


Michigan State University

1. Selection and Non-Selections Glyphs

2. Hover Glyphs

3. Colormapping

Customized Glyphs

```
p = figure(tools='box_select')
p.circle('mpg', 'cyl', source=cds_df,
             selection_color='red',
             nonselection_alpha=0.1)


Selection and Non-Selection Glyphs

Hover Glyphs

```
from bokeh.models import CategoricalColorMapper
color_mapper = CategoricalColorMapper(
                   factors=['US', 'Asia', 'Europe'],
                   palette=['blue', 'red', 'green'])
p3.circle('mpg', 'cyl', source=cds_df,
             color=dict(field='origin',
                        transform=color_mapper),
             legend='Origin')

Learn Before

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