How Use Bokeh Vbar Chart Parameter With Groupby Object?
Solution 1:
The group = df.groupby(('cyl', 'mfr'))
makes a <pandas.core.groupby.DataFrameGroupBy object at 0x0xxx>
. If you pass this to a ColumnDataSource
, bokeh does a lot of magic, and calculates a lot of statistics already
df.columns
Index(['mpg', 'cyl', 'displ', 'hp', 'weight', 'accel', 'yr', 'origin', 'name', 'mfr'],
source.column_names
['accel_count', 'accel_mean', 'accel_std', 'accel_min', 'accel_25%', 'accel_50%', 'accel_75%', 'accel_max', 'displ_count', 'displ_mean', 'displ_std', 'displ_min', 'displ_25%', 'displ_50%', 'displ_75%', 'displ_max', 'hp_count', 'hp_mean', 'hp_std', 'hp_min', 'hp_25%', 'hp_50%', 'hp_75%', 'hp_max', 'mpg_count', 'mpg_mean', 'mpg_std', 'mpg_min', 'mpg_25%', 'mpg_50%', 'mpg_75%', 'mpg_max', 'weight_count', 'weight_mean', 'weight_std', 'weight_min', 'weight_25%', 'weight_50%', 'weight_75%', 'weight_max', 'yr_count', 'yr_mean', 'yr_std', 'yr_min', 'yr_25%', 'yr_50%', 'yr_75%', 'yr_max', 'cyl_mfr']
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