Anaconda Enterprise: Documentation

# categorical_bar_pandas_groupby_colormapped.py

    from bokeh.io import show, output_file
    from bokeh.models import ColumnDataSource
    from bokeh.palettes import Spectral5
    from bokeh.plotting import figure
    from bokeh.sampledata.autompg import autompg as df
    from bokeh.transform import factor_cmap

    output_file("groupby.html")

    df.cyl = df.cyl.astype(str)
    group = df.groupby('cyl')

    source = ColumnDataSource(group)

    cyl_cmap = factor_cmap('cyl', palette=Spectral5, factors=sorted(df.cyl.unique()))

    p = figure(plot_height=350, x_range=group, title="MPG by # Cylinders",
               toolbar_location=None, tools="")

    p.vbar(x='cyl', top='mpg_mean', width=1, source=source,
           line_color=cyl_cmap, fill_color=cyl_cmap)

    p.y_range.start = 0
    p.xgrid.grid_line_color = None
    p.xaxis.axis_label = "some stuff"
    p.xaxis.major_label_orientation = 1.2
    p.outline_line_color = None

    show(p)