RangeSlider#

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import math
import panel as pn
pn.extension()

The RangeSlider widget allows selecting a floating-point range using a slider with two handles.

Discover more on using widgets to add interactivity to your applications in the how-to guides on interactivity. Alternatively, learn how to set up callbacks and (JS-)links between parameters or how to use them as part of declarative UIs with Param.

Parameters:#

For details on other options for customizing the component see the layout and styling how-to guides.

Core#

start (float): The range’s lower bound
end (float): The range’s upper bound
step (float): The interval between values
value (tuple): Tuple of upper and lower bounds of selected range
value_throttled (tuple): Tuple of upper and lower bounds of selected range throttled until mouseup

Display#

bar_color (color): Color of the slider bar as a hexadecimal RGB value
direction (str): Whether the slider should go from left to right (‘ltr’) or right to left (‘rtl’)
disabled (boolean): Whether the widget is editable
format (str, bokeh.models.TickFormatter): Formatter to apply to the slider value
name (str): The title of the widget
orientation (str): Whether the slider should be displayed in a ‘horizontal’ or ‘vertical’ orientation.
tooltips (boolean): Whether to display tooltips on the slider handle

range_slider = pn.widgets.RangeSlider(
    name='Range Slider', start=0, end=math.pi, value=(math.pi/4., math.pi/2.), step=0.01)

range_slider

RangeSlider.value returns a tuple of float values that can be read out and set like other widgets:

range_slider.value

(0.7853981633974483, 1.5707963267948966)

A custom format string or bokeh TickFormatter may be used to format the slider values:

from bokeh.models.formatters import PrintfTickFormatter

str_format = pn.widgets.RangeSlider(name='Distance', format='0.0a', start=100000, end=1000000)

tick_format = pn.widgets.RangeSlider(name='Distance', format=PrintfTickFormatter(format='%.3f m'))

pn.Column(str_format, tick_format)

Controls#

The RangeSlider widget exposes a number of options which can be changed from both Python and Javascript. Try out the effect of these parameters interactively:

pn.Row(range_slider.controls(jslink=True), range_slider)

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