ptvis.color.DiscreteColorConversion

class ptvis.color.DiscreteColorConversion(colors=None, levels=None, value_min=None, value_max=None, lower_color=None, higher_color=None, na_color='#444444', n_intervals=10, closed='low', include_boundary=True)

Bases: BaseNumericalColorConversion

Color conversion from numerical values to discrete colors.

Parameters:

• colors (array-like of str, optional) – Colors defining a color scale.

• levels (array-like of float, optional) – Levels defining a color scale. Must be in ascending order. If not given, evenly spaced levels are used.

• value_min (float, optional) – Value corresponding with the lowest level.

• value_max (float, optional) – Value corresponding with the highest level.

• lower_color (str, optional) – Color for values lower than the domain.

• higher_color (str, optional) – Color for values higher than the domain.

• na_color (str, optional) – Color for NaN.

• n_intervals (int, optional) – Number of intervals or discrete colors.

• closed ({'low', 'high'}, optional) – Closed endpoint of an interval.

• include_boundary (bool, optional) – If True, both boundaries are included in the domain.

Attributes

closed	Closed endpoint of an interval.
colors	Colors defining a color scale.
higher_color	Color for values higher than the domain.
include_boundary	Whether both boundaries are included in the domain.
levels	Levels defining a color scale.
lower_color	Color for values lower than the domain.
n_intervals	Number of intervals.
na_color	Color for NaN.
value_max	Value corresponding to the highest level.
value_min	Value corresponding to the lowest level.

Methods

apply(values)	Apply the conversion to values.
color_guide(values[, attrs])	Give a color guide.
domain(values)	Give a domain of the conversion.