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librosa.display.ChromaFormatter

class librosa.display.ChromaFormatter(key='C:maj', unicode=True)

A formatter for chroma axes

Parameters:

keystr

The key in which to display pitch class labels. See core.midi_to_note for supported values.

unicodebool

If True, use unicode symbols for accidentals.

If False, use ASCII symbols for accidentals.

See also

matplotlib.ticker.Formatter

Examples

>>> import matplotlib.pyplot as plt
>>> values = np.arange(12)
>>> fig, ax = plt.subplots()
>>> ax.plot(values)
>>> ax.yaxis.set_major_formatter(librosa.display.ChromaFormatter())
>>> ax.set(ylabel='Pitch class')

__init__(key='C:maj', unicode=True)

Methods

__init__([key, unicode])
create_dummy_axis(**kwargs)
fix_minus(s)	Some classes may want to replace a hyphen for minus with the proper Unicode symbol (U+2212) for typographical correctness. This is a helper method to perform such a replacement when it is enabled via :rc:`axes.unicode_minus`.
format_data(value)	Return the context-independent string representation of a single value.
format_data_short(value)	Return a short string representation of value for the mouseover tooltip (the coordinate display in the interactive figure window).
format_ticks(values)	Return the tick label strings for all values.
get_offset()
set_axis(axis)
set_locs(locs)	Set the locations of the ticks.

Attributes

axis
locs	[Deprecated]
key
unicode