Example Bokeh app that swaps axis and range out dynamically

dynamic_plot_example.py

from bokeh.models import GlyphRenderer, ColumnDataSource
from bokeh.models.plots import Plot
from bokeh.models import Circle, Range1d, LinearAxis, CategoricalAxis, Axis, FactorRange
from bokeh.models.widgets import HBox, VBoxForm, Select

from bokeh.io import curdoc

data = {'a': [1, 2, 3, 4],
        'b': [3, 5, 4, 5],
        'c': ['foo', 'bar', 'foo', 'bar']}

col_names = list(data.keys())

# because dimensions and attributes of chart are modeled, this could be auto generated
x_select = Select(
        title='x', name='x_select',
        options=col_names, value='a'
)

y_select = Select(
        title='y', name='y_select',
        options=col_names, value='b'
)

x_range = Range1d(start=0, end=10)
y_range = Range1d(start=0, end=10)

x_range_cat = FactorRange(factors=data['c'])
y_range_cat = FactorRange(factors=data['c'])

x_axis = LinearAxis()
y_axis = LinearAxis()

x_axis2 = CategoricalAxis()
y_axis2 = CategoricalAxis()

plot = Plot(x_range=x_range, y_range=y_range)
plot.add_layout(x_axis, 'below')
plot.add_layout(y_axis, 'left')

ds = ColumnDataSource(data)
glyph = Circle(x='a', y='b')
renderer = GlyphRenderer(data_source=ds, glyph=glyph)

plot.renderers.append(renderer)

selectors = [x_select, y_select]

inputs = VBoxForm(children=selectors)

hbox = HBox(children=[inputs, plot])


def update_data():

    new_renderers = []
    for renderer in plot.renderers:
        if not isinstance(renderer, Axis):
            new_renderers.append(renderer)

    plot.renderers = new_renderers

    plot.below = []
    plot.left = []

    if x_select.value == 'c':
        this_x_axis = x_axis2
        this_x_range = x_range_cat
    else:
        this_x_axis = x_axis
        this_x_range = x_range

    if y_select.value == 'c':
        this_y_axis = y_axis2
        this_y_range = y_range_cat
    else:
        this_y_axis = y_axis
        this_y_range = y_range

    this_y_axis.plot = None
    this_x_axis.plot = None

    plot.add_layout(this_x_axis, 'below')
    plot.add_layout(this_y_axis, 'left')
    plot.x_range = this_x_range
    plot.y_range = this_y_range

    glyph.x = x_select.value
    glyph.y = y_select.value


def input_change(attrname, old, new):
    update_data()

for selector in selectors:
    selector.on_change('value', input_change)

curdoc().add_root(hbox)