Object definitions for graphing and plotting Stream objects. The Graph object subclasses abstract fundamental graphing archetypes using the matplotlib library. The Plot object subclasses provide reusable approaches to graphing data and structures in Stream objects.
Convert any specification of a color to a hexadecimal color used by matplotlib.
>>> from music21 import *
>>> graph.getColor('red')
'#ff0000'
>>> graph.getColor('Steel Blue')
'#4682b4'
>>> graph.getColor('#f50')
'#ff5500'
>>> graph.getColor([.5, .5, .5])
'#808080'
>>> graph.getColor(.8)
'#cccccc'
>>> graph.getColor([255, 255, 255])
'#ffffff'
Given a stream and any keyword configuration arguments, create and display a plot.
Note: plots requires matplotib to be installed.
Plot methods can be specified as additional arguments or by keyword. Two keyword arguments can be given: format and values. If positional arguments are given, the first is taken as format and the rest are collected as values. If format is the class name, that class is collected. Additionally, every PlotStream subclass defines one format string and a list of values strings. The format parameter defines the type of Graph (e.g. scatter, histogram, colorGrid). The values list defines what values are graphed (e.g. quarterLength, pitch, pitchClass).
If a user provides a format and one or more values strings, a plot with the corresponding profile, if found, will be generated. If not, the first Plot to match any of the defined specifiers will be created.
In the case of PlotWindowedAnalysis subclasses, the DiscreteAnalysis subclass indentifiers list is added to the Plot’s values list.
Available plots include the following:
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> s.plot('histogram', 'pitch')
>>> s = corpus.parse('bach/bwv57.8')
>>> s.plot('pianoroll')
Replace possible user format strings with defined format names as used herein. Returns string unaltered if no match.
Given a value list, replace string with synonymes. Let unmatched values pass.
Inherits from: PlotHistogram, PlotStream
A histogram of pitch space.
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotHistogramPitchSpace(s)
>>> p.id
'histogram-pitch'
>>> p.process() # with defaults and proper configuration, will open graph
PlotHistogramPitchSpace attributes
Attributes without Documentation: values
Attributes inherited from PlotHistogram: format
PlotHistogramPitchSpace properties
Properties inherited from PlotStream: id
PlotHistogramPitchSpace methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotHistogram, PlotStream
A histogram of pitch class
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotHistogramPitchClass(s)
>>> p.id
'histogram-pitchClass'
>>> p.process() # with defaults and proper configuration, will open graph
PlotHistogramPitchClass attributes
Attributes without Documentation: values
Attributes inherited from PlotHistogram: format
PlotHistogramPitchClass properties
Properties inherited from PlotStream: id
PlotHistogramPitchClass methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotHistogram, PlotStream
A histogram of pitch class
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotHistogramQuarterLength(s)
>>> p.id
'histogram-quarterLength'
>>> p.process() # with defaults and proper configuration, will open graph
PlotHistogramQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from PlotHistogram: format
PlotHistogramQuarterLength properties
Properties inherited from PlotStream: id
PlotHistogramQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Krumhansl-Schmuckler analysis routine. See KrumhanslSchmuckler for more details.
>>> from music21 import *
>>> s = corpus.parse('bach/bwv66.6')
>>> p = graph.PlotWindowedKrumhanslSchmuckler(s.parts[0])
>>> p.process() # with defaults and proper configuration, will open graph
PlotWindowedKrumhanslSchmuckler attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedKrumhanslSchmuckler properties
Properties inherited from PlotStream: id
PlotWindowedKrumhanslSchmuckler methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of basic pitch span.
>>> from music21 import *
>>> s = corpus.parse('bach/bwv66.6')
>>> p = graph.PlotWindowedAmbitus(s.parts[0])
>>> p.process() # with defaults and proper configuration, will open graph
PlotWindowedAmbitus attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedAmbitus properties
Properties inherited from PlotStream: id
PlotWindowedAmbitus methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotScatter, PlotStream
A scatter plot of pitch space and quarter length
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotScatterPitchSpaceQuarterLength(s)
>>> p.id
'scatter-pitch-quarterLength'
>>> p.process()
PlotScatterPitchSpaceQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from PlotScatter: format
PlotScatterPitchSpaceQuarterLength properties
Properties inherited from PlotStream: id
PlotScatterPitchSpaceQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatter, PlotStream
A scatter plot of pitch class and quarter length
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotScatterPitchClassQuarterLength(s)
>>> p.id
'scatter-pitchClass-quarterLength'
>>> p.process()
PlotScatterPitchClassQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from PlotScatter: format
PlotScatterPitchClassQuarterLength properties
Properties inherited from PlotStream: id
PlotScatterPitchClassQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatter, PlotStream
A scatter plot of pitch class and offset
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotScatterPitchClassOffset(s)
>>> p.id
'scatter-pitchClass-offset'
>>> p.process()
PlotScatterPitchClassOffset attributes
Attributes without Documentation: values
Attributes inherited from PlotScatter: format
PlotScatterPitchClassOffset properties
Properties inherited from PlotStream: id
PlotScatterPitchClassOffset methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatter, PlotStream
A graph of dynamics used by pitch space.
>>> from music21 import *
>>> s = corpus.parse('schumann/opus41no1', 2)
>>> p = graph.PlotScatterPitchSpaceDynamicSymbol(s)
>>> p.process()
PlotScatterPitchSpaceDynamicSymbol attributes
Attributes without Documentation: values
Attributes inherited from PlotScatter: format
PlotScatterPitchSpaceDynamicSymbol properties
Properties inherited from PlotStream: id
PlotScatterPitchSpaceDynamicSymbol methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotHorizontalBar, PlotStream
A graph of events, sorted by pitch space, over time
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotHorizontalBarPitchSpaceOffset(s)
>>> p.process() # with defaults and proper configuration, will open graph
PlotHorizontalBarPitchSpaceOffset attributes
Attributes without Documentation: values
Attributes inherited from PlotHorizontalBar: format
PlotHorizontalBarPitchSpaceOffset properties
Properties inherited from PlotStream: id
PlotHorizontalBarPitchSpaceOffset methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotHorizontalBar, PlotStream
A graph of events, sorted by pitch class, over time
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotHorizontalBarPitchClassOffset(s)
>>> p.process() # with defaults and proper configuration, will open graph
PlotHorizontalBarPitchClassOffset attributes
Attributes without Documentation: values
Attributes inherited from PlotHorizontalBar: format
PlotHorizontalBarPitchClassOffset properties
Properties inherited from PlotStream: id
PlotHorizontalBarPitchClassOffset methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotHorizontalBarWeighted, PlotStream
A graph of the activity of a parameter of a part (or a group of parts) over time. The default parameter graphed is Dynamics. Dynamics are assumed to extend activity to the next change in dynamics.
Numerous parameters can be configured based on functionality encoded in the PartReduction object.
If the fillByMeasure parameter is True, and if measures are available, each part will segment by Measure divisions, and look for the target activity only once per Measure. If more than one target is found in the Measure, values will be averaged. If fillByMeasure is False, the part will be segmented by each Note.
The segmentByTarget parameter is True, segments, which may be Notes or Measures, will be divided if necessary to show changes that occur over the duration of the segment by a target object.
If the normalizeByPart parameter is True, each part will be normalized within the range only of that part. If False, all parts will be normalized by the max of all parts. The default is True.
>>> from music21 import *
>>> s = corpus.parse('bwv66.6')
>>> dyn = ['p', 'mf', 'f', 'ff', 'mp', 'fff', 'ppp']
>>> i = 0
... for p in s.parts:
... for m in p.getElementsByClass('Measure'):
... m.insert(0, dynamics.Dynamic(dyn[i % len(dyn)]))
... i += 1
...
>>> s.plot('dolan', fillByMeasure=True, segmentByTarget=True)
PlotDolan attributes
Attributes without Documentation: values
Attributes inherited from PlotHorizontalBarWeighted: format
PlotDolan properties
Properties inherited from PlotStream: id
PlotDolan methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatterWeighted, PlotStream
A graph of event, sorted by pitch, over time
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotScatterWeightedPitchSpaceQuarterLength(s)
>>> p.process() # with defaults and proper configuration, will open graph
PlotScatterWeightedPitchSpaceQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from PlotScatterWeighted: format
PlotScatterWeightedPitchSpaceQuarterLength properties
Properties inherited from PlotStream: id
PlotScatterWeightedPitchSpaceQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatterWeighted, PlotStream
A graph of event, sorted by pitch class, over time.
>>> from music21 import *
>>> s = corpus.parse('bach/bwv57.8')
>>> p = graph.PlotScatterWeightedPitchClassQuarterLength(s)
>>> p.process() # with defaults and proper configuration, will open graph
PlotScatterWeightedPitchClassQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from PlotScatterWeighted: format
PlotScatterWeightedPitchClassQuarterLength properties
Properties inherited from PlotStream: id
PlotScatterWeightedPitchClassQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotScatterWeighted, PlotStream
A graph of dynamics used by pitch space.
>>> from music21 import *
>>> s = corpus.parse('schumann/opus41no1', 2)
>>> p = graph.PlotScatterWeightedPitchSpaceDynamicSymbol(s)
>>> p.process() # with defaults and proper configuration, will open graph
PlotScatterWeightedPitchSpaceDynamicSymbol attributes
Attributes without Documentation: values
Attributes inherited from PlotScatterWeighted: format
PlotScatterWeightedPitchSpaceDynamicSymbol properties
Properties inherited from PlotStream: id
PlotScatterWeightedPitchSpaceDynamicSymbol methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: Plot3DBars, PlotStream
A scatter plot of pitch and quarter length
>>> from music21 import *
>>> from music21.musicxml import testFiles
>>> s = converter.parse(testFiles.mozartTrioK581Excerpt)
>>> p = graph.Plot3DBarsPitchSpaceQuarterLength(s)
>>> p.id
'3dBars-pitch-quarterLength'
>>> p.process() # with defaults and proper configuration, will open graph
Plot3DBarsPitchSpaceQuarterLength attributes
Attributes without Documentation: values
Attributes inherited from Plot3DBars: format
Plot3DBarsPitchSpaceQuarterLength properties
Properties inherited from PlotStream: id
Plot3DBarsPitchSpaceQuarterLength methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
A music21.graph.Graph is an object that represents a visual graph or plot, automating the creation and configuration of this graph in matplotlib. It is a low-level object that most music21 users do not need to call directly; yet, as most graphs will take keyword arguments that specify the look of graphs, they are important to know about.
The keyword arguments can be provided for configuration are: alpha (which describes how transparent elements of the graph are), colorBackgroundData, colorBackgroundFigure, colorGrid, title, doneAction (see below), figureSize, colors, tickFontSize, titleFontSize, labelFontSize, fontFamily, marker, markerSize.
Graph objects do not manipulate Streams or other music21 data; they only manipulate raw data formatted for each Graph subclass, hence it is unlikely that users will call this class directly.
The doneAction argument determines what happens after the graph has been processed. Currently there are three options, ‘write’ creates a file on disk (this is the default), while ‘show’ opens an interactive GUI browser. The third option, None, does the processing but does not write any output.
>>> from music21 import *
>>> a = graph.Graph(title='a graph of some data to be given soon', tickFontSize = 9)
>>> a.setData(['some', 'arbitrary', 'data', 14, 9.04, None])
Graph attributes
Attributes without Documentation: doneAction, hideYGrid, fontFamily, colors, axisKeys, marker, axis, title, markerSize, xTickLabelVerticalAlignment, colorGrid, titleFontSize, colorBackgroundFigure, tickFontSize, grid, alpha, labelFontSize, data, xTickLabelHorizontalAlignment, hideXGrid, figureSize, colorBackgroundData, xTickLabelRotation, dpi
Graph methods
- done(fp=None)¶
Implement the desired doneAction, after data processing
- process()¶
process data and prepare plot
- setAxisLabel(axisKey, label)¶
No documentation.
- setAxisRange(axisKey, valueRange, paddingFraction=0.1)¶
Set the range for the axis for a given axis key (generally, ‘x’, or ‘y’)
ValueRange is a two-element tuple of the lowest number and the highest.
By default there is a padding of 10% of the range in either direction. Set paddingFraction = 0 to eliminate this shift
- setData(data)¶
No documentation.
- setDoneAction(action)¶
sets what should happen when the graph is created (see docs above) default is ‘write’.
- setFigureSize(figSize)¶
Set the figure size as an x,y pair.
Scales all graph components but because of matplotlib limitations (esp. on 3d graphs) no all labels scale properly.
- setIntegerTicksFromData(unsortedData, axisKey='y', dataSteps=8)¶
Set the ticks for an axis (usually ‘y’) given the data
- setTicks(axisKey, pairs)¶
Set the tick-labels for a given graph or plot’s axisKey (generally ‘x’, and ‘y’) with a set of pairs
Pairs are tuples of positions and labels.
N.B. – both ‘x’ and ‘y’ ticks have to be set in order to get matplotlib to display either...
- setTitle(title)¶
No documentation.
- show()¶
Calls the show() method of the matplotlib plot. For most matplotlib back ends, this will open a GUI window with the desired graph.
- write(fp=None)¶
Writes the graph to a file. If no file path is given, a temporary file is used.
Inherits from: Graph
Graph multiple parallel bar graphs in 3D.
This draws bars with polygons, a temporary alternative to using Graph3DBars, above.
Note: Due to matplotib issue Axis ticks do not seem to be adjustable without distorting the graph.
>>> from music21 import *
>>> g = graph.Graph3DPolygonBars()
>>> data = {1:[], 2:[], 3:[]}
>>> for i in range(len(data.keys())):
... q = [(x, random.choice(range(10*(i+1)))) for x in range(20)]
... data[data.keys()[i]] = q
>>> g.setData(data)
>>> g.process()
Graph3DPolygonBars attributes
Attributes without Documentation: barWidth
Attributes inherited from Graph: doneAction, hideYGrid, fontFamily, colors, axisKeys, marker, axis, title, markerSize, xTickLabelVerticalAlignment, colorGrid, titleFontSize, colorBackgroundFigure, tickFontSize, grid, alpha, labelFontSize, data, xTickLabelHorizontalAlignment, hideXGrid, figureSize, colorBackgroundData, xTickLabelRotation, dpi
Graph3DPolygonBars methods
- process()¶
No documentation.
Methods inherited from Graph: done(), setAxisLabel(), setAxisRange(), setData(), setDoneAction(), setFigureSize(), setIntegerTicksFromData(), setTicks(), setTitle(), show(), write()
Inherits from: Graph
Grid of discrete colored “blocks” to visualize results of a windowed analysis routine.
Data is provided as a list of lists of colors, where colors are specified as a hex triplet, or the common HTML color codes, and based on analysis-specific mapping of colors to results.
>>> from music21 import * >>> g = graph.GraphColorGrid() >>> data = [['#55FF00', '#9b0000', '#009b00'], ['#FFD600', '#FF5600'], ['#201a2b', '#8f73bf', '#a080d5', '#403355', '#999999']] >>> g.setData(data) >>> g.process()![]()
Inherits from: Graph
Grid of discrete colored “blocks” where each block can be labeled
Data is provided as a list of lists of colors, where colors are specified as a hex triplet, or the common HTML color codes, and based on analysis-specific mapping of colors to results.
>>> from music21 import * >>> g = graph.GraphColorGridLegend() >>> data = [] >>> data.append(('Major', [('C#', '#00AA55'), ('D-', '#5600FF'), ('G#', '#2B00FF')])) >>> data.append(('Minor', [('C#', '#004600'), ('D-', '#00009b'), ('G#', '#00009B')])) >>> g.setData(data) >>> g.process()![]()
Inherits from: Graph
Graph the count of on or more elements in vertical bars
Data set is simply a list of x and y pairs, where there is only one of each x value, and y value is a list of values
>>> from music21 import *
>>> import random
>>> g = graph.GraphGroupedVerticalBar()
>>> data = [('bar%s' % x, {'a':3,'b':2,'c':1}) for x in range(10)]
>>> data
[('bar0', {'a': 3, 'c': 1, 'b': 2}), ('bar1', {'a': 3, 'c': 1, 'b': 2}), ('bar2', {'a': 3, 'c': 1, 'b': 2}), ('bar3', {'a': 3, 'c': 1, 'b': 2}), ('bar4', {'a': 3, 'c': 1, 'b': 2}), ('bar5', {'a': 3, 'c': 1, 'b': 2}), ('bar6', {'a': 3, 'c': 1, 'b': 2}), ('bar7', {'a': 3, 'c': 1, 'b': 2}), ('bar8', {'a': 3, 'c': 1, 'b': 2}), ('bar9', {'a': 3, 'c': 1, 'b': 2})]
>>> g.setData(data)
>>> g.process()
GraphGroupedVerticalBar attributes
Attributes without Documentation: groupLabelHeight, binWidth, roundDigits
Attributes inherited from Graph: doneAction, hideYGrid, fontFamily, colors, axisKeys, marker, axis, title, markerSize, xTickLabelVerticalAlignment, colorGrid, titleFontSize, colorBackgroundFigure, tickFontSize, grid, alpha, labelFontSize, data, xTickLabelHorizontalAlignment, hideXGrid, figureSize, colorBackgroundData, xTickLabelRotation, dpi
GraphGroupedVerticalBar methods
- labelBars(ax, rects)¶
No documentation.
- process()¶
No documentation.
Methods inherited from Graph: done(), setAxisLabel(), setAxisRange(), setData(), setDoneAction(), setFigureSize(), setIntegerTicksFromData(), setTicks(), setTitle(), show(), write()
Inherits from: Graph
Graph the count of a single element.
Data set is simply a list of x and y pairs, where there is only one of each x value, and y value is the count or magnitude of that value
>>> from music21 import *
>>> import random
>>> g = graph.GraphHistogram()
>>> data = [(x, random.choice(range(30))) for x in range(50)]
>>> g.setData(data)
>>> g.process()
GraphHistogram attributes
Attributes without Documentation: binWidth
Attributes inherited from Graph: doneAction, hideYGrid, fontFamily, colors, axisKeys, marker, axis, title, markerSize, xTickLabelVerticalAlignment, colorGrid, titleFontSize, colorBackgroundFigure, tickFontSize, grid, alpha, labelFontSize, data, xTickLabelHorizontalAlignment, hideXGrid, figureSize, colorBackgroundData, xTickLabelRotation, dpi
GraphHistogram methods
- process()¶
No documentation.
Methods inherited from Graph: done(), setAxisLabel(), setAxisRange(), setData(), setDoneAction(), setFigureSize(), setIntegerTicksFromData(), setTicks(), setTitle(), show(), write()
Inherits from: Graph
Numerous horizontal bars in discrete channels, where bars can be incomplete and/or overlap.
Data provided is a list of pairs, where the first value becomes the key, the second value is a list of x-start, x-length values.
>>> from music21 import *
>>> a = graph.GraphHorizontalBar(doneAction='show')
>>> data = [('Chopin', [(1810, 1849-1810)]), ('Schumanns', [(1810, 1856-1810), (1819, 1896-1819)]), ('Brahms', [(1833, 1897-1833)])]
>>> a.setData(data)
>>> a.process()
Inherits from: Graph
Numerous horizontal bars in discrete channels, where bars can be incomplete and/or overlap, and can have different heights and colors within their respective channel.
Inherits from: Graph
Grid a networkx graph – which is a graph of nodes and edges. Requires the optional networkx module.
GraphNetworxGraph attributes
- networkxGraph¶
An instance of a networkx graph object.
Attributes inherited from Graph: doneAction, hideYGrid, fontFamily, colors, axisKeys, marker, axis, title, markerSize, xTickLabelVerticalAlignment, colorGrid, titleFontSize, colorBackgroundFigure, tickFontSize, grid, alpha, labelFontSize, data, xTickLabelHorizontalAlignment, hideXGrid, figureSize, colorBackgroundData, xTickLabelRotation, dpi
GraphNetworxGraph methods
- process()¶
No documentation.
Methods inherited from Graph: done(), setAxisLabel(), setAxisRange(), setData(), setDoneAction(), setFigureSize(), setIntegerTicksFromData(), setTicks(), setTitle(), show(), write()
Inherits from: Graph
Graph two parameters in a scatter plot. Data representation is a list of points of values.
>>> from music21 import *
>>> g = graph.GraphScatter()
>>> data = [(x, x*x) for x in range(50)]
>>> g.setData(data)
>>> g.process()
Inherits from: Graph
A scatter plot where points are scaled in size to represent the number of values stored within.
>>> from music21 import *
>>> g = graph.GraphScatterWeighted()
>>> data = [(23, 15, 234), (10, 23, 12), (4, 23, 5), (15, 18, 120)]
>>> g.setData(data)
>>> g.process()
Inherits from: PlotStream
Base class for Stream plotting classes.
Plot3DBars attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
Plot3DBars properties
Properties inherited from PlotStream: id
Plot3DBars methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotMultiStream
FeatureExtractors can be ids or classes.
PlotFeatures attributes
Attributes without Documentation: format
Attributes inherited from PlotMultiStream: values
PlotFeatures methods
Inherits from: PlotStream
Base class for Stream plotting classes.
Plots take a Stream as their arguments, Graphs take any data.
PlotHistogram attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotHistogram properties
Properties inherited from PlotStream: id
PlotHistogram methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotStream
A graph of events, sorted by pitch, over time
PlotHorizontalBar attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotHorizontalBar properties
Properties inherited from PlotStream: id
PlotHorizontalBar methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotStream
A base class for plots of Scores with weighted (by height) horizontal bars. Many different weighted segments can provide a representation of a dynamic parameter of a Part.
PlotHorizontalBarWeighted attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotHorizontalBarWeighted properties
Properties inherited from PlotStream: id
PlotHorizontalBarWeighted methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Approaches to plotting and graphing multiple Streams. A base class from which Stream plotting Classes inherit.
Provide a list of Streams as an argument. Optionally provide an additional list of labels for each list. If flatten is True, the Streams will automatically be flattened.
PlotMultiStream attributes
Attributes without Documentation: format, values
PlotMultiStream methods
- process()¶
This will process all data, as well as call the done() method. What happens when the done() is called is determined by the the keyword argument doneAction; options are ‘show’ (display immediately), ‘write’ (write the file to a supplied file path), and None (do processing but do not write or show a graph).
Subclass dependent data extracted is stored in the self.data attribute.
- show()¶
Call internal Graphs show() method independently of doneAction set and run with process()
- write(fp=None)¶
Call internal Graphs write() method independently of doneAction set and run with process()
Inherits from: PlotStream
Base class for 2D Scatter plots.
PlotScatter attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotScatter properties
Properties inherited from PlotStream: id
PlotScatter methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Inherits from: PlotStream
PlotScatterWeighted attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotScatterWeighted properties
Properties inherited from PlotStream: id
PlotScatterWeighted methods
Methods inherited from PlotStream: process(), remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength(), write()
Approaches to plotting and graphing a Stream. A base class from which Stream plotting Classes inherit.
This class has a number of public attributes, but these are generally not intended for direct user application. The data attribute, for example, exposes the internal data format of this plotting routine for testing, but no effort is made to make this data useful outside of the context of the Plot.
Provide a Stream as an arguement. If flatten is True, the Stream will automatically be flattened.
PlotStream attributes
Attributes without Documentation: format, values
PlotStream properties
- id¶
Each PlotStream has a unique id that consists of its format and a string that defines the parameters that are graphed.
PlotStream methods
- process()¶
This will process all data, as well as call the done() method. What happens when the done() is called is determined by the the keyword argument doneAction; options are ‘show’ (display immediately), ‘write’ (write the file to a supplied file path), and None (do processing but do not write or show a graph).
Subclass dependent data extracted is stored in the self.data attribute.
- remapQuarterLength(x)¶
Remap all quarter lengths.
- show()¶
Call internal Graphs show() method independently of doneAction set and run with process()
- ticksDynamics(minNameIndex=None, maxNameIndex=None)¶
Utility method to get ticks in dynamic values.
>>> from music21 import stream; s = stream.Stream() >>> a = PlotStream(s) >>> a.ticksDynamics() [[0, '$pppppp$'], [1, '$ppppp$'], [2, '$pppp$'], [3, '$ppp$'], [4, '$pp$'], [5, '$p$'], [6, '$mp$'], [7, '$mf$'], [8, '$f$'], [9, '$fp$'], [10, '$sf$'], [11, '$ff$'], [12, '$fff$'], [13, '$ffff$'], [14, '$fffff$'], [15, '$ffffff$']] >>> a.ticksDynamics(3,6) [[3, '$ppp$'], [4, '$pp$'], [5, '$p$'], [6, '$mp$']]
- ticksOffset(offsetMin=None, offsetMax=None, offsetStepSize=None, displayMeasureNumberZero=False, minMaxOnly=False, remap=False)¶
Get offset ticks. If Measures are found, they will be used to create ticks. If not, offsetStepSize will be used to create offset ticks between min and max. The remap parameter is not yet used.
If minMaxOnly is True, only the first and last values will be provided.
>>> from music21 import corpus, stream, note >>> s = corpus.parse('bach/bwv281.xml') >>> a = PlotStream(s) >>> a.ticksOffset() # on whole score, showing anacrusis spacing [[0.0, '0'], [1.0, '1'], [5.0, '2'], [9.0, '3'], [13.0, '4'], [17.0, '5'], [21.0, '6'], [25.0, '7'], [29.0, '8']] >>> a = PlotStream(s.parts[0].flat) # on a Part >>> a.ticksOffset() # on whole score, showing anacrusis spacing [[0.0, '0'], [1.0, '1'], [5.0, '2'], [9.0, '3'], [13.0, '4'], [17.0, '5'], [21.0, '6'], [25.0, '7'], [29.0, '8']] >>> a.ticksOffset(8, 12, 2) [[9.0, '3']]>>> a = PlotStream(s.parts[0].flat) # on a Flat collection >>> a.ticksOffset(8, 12, 2) [[9.0, '3']] >>> n = note.Note('a') # on a raw collection of notes with no measures >>> s = stream.Stream() >>> s.repeatAppend(n, 10) >>> a = PlotStream(s) # on a Part >>> a.ticksOffset() # on whole score [[0, '0'], [10, '10']]
- ticksPitchClass(pcMin=0, pcMax=11)¶
Utility method to get ticks in pitch classes
>>> from music21 import corpus >>> s = corpus.parse('bach/bwv324.xml') >>> a = PlotStream(s) >>> [x for x,y in a.ticksPitchClass()] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
- ticksPitchClassUsage(pcMin=0, pcMax=11, showEnharmonic=True, blankLabelUnused=True, hideUnused=False)¶
Get ticks and labels for pitch classes based on usage. That is, show the most commonly used enharmonic first.
>>> from music21 import corpus >>> s = corpus.parse('bach/bwv324.xml') >>> a = PlotStream(s) >>> [x for x, y in a.ticksPitchClassUsage(hideUnused=True)] [0, 2, 3, 4, 6, 7, 9, 11] >>> s = corpus.parse('bach/bwv281.xml') >>> a = PlotStream(s) >>> [x for x, y in a.ticksPitchClassUsage(showEnharmonic=True, hideUnused=True)] [0, 2, 3, 4, 5, 7, 9, 10, 11] >>> [x for x, y in a.ticksPitchClassUsage(showEnharmonic=True, blankLabelUnused=False)] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]>>> s = corpus.parse('schumann/opus41no1/movement2.xml') >>> a = PlotStream(s) >>> [x for x, y in a.ticksPitchClassUsage(showEnharmonic=True)] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
- ticksPitchSpaceChromatic(pitchMin=36, pitchMax=100)¶
Utility method to get ticks in pitch space values.
>>> from music21 import stream; s = stream.Stream() >>> a = PlotStream(s) >>> [x for x,y in a.ticksPitchSpaceChromatic(60,72)] [60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72]
- ticksPitchSpaceOctave(pitchMin=36, pitchMax=100)¶
Utility method to get ticks in pitch space only for every octave.
>>> from music21 import stream; s = stream.Stream() >>> a = PlotStream(s) >>> a.ticksPitchSpaceOctave() [[36, 'C2'], [48, 'C3'], [60, 'C4'], [72, 'C5'], [84, 'C6'], [96, 'C7']]
- ticksPitchSpaceQuartertone(pitchMin=36, pitchMax=100)¶
Utility method to get ticks in pitch space values.
- ticksPitchSpaceQuartertoneUsage(pcMin=36, pcMax=72, showEnharmonic=False, blankLabelUnused=True, hideUnused=False)¶
Get ticks and labels for pitch space based on usage. That is, show the most commonly used enharmonic first.
- ticksPitchSpaceUsage(pcMin=36, pcMax=72, showEnharmonic=False, blankLabelUnused=True, hideUnused=False)¶
Get ticks and labels for pitch space based on usage. That is, show the most commonly used enharmonic first.
>>> from music21 import corpus >>> s = corpus.parse('bach/bwv324.xml') >>> a = PlotStream(s.parts[0]) >>> [x for x, y in a.ticksPitchSpaceUsage(hideUnused=True)] [64, 66, 67, 69, 71, 72] >>> s = corpus.parse('schumann/opus41no1/movement2.xml') >>> a = PlotStream(s) >>> [x for x, y in a.ticksPitchSpaceUsage(showEnharmonic=True, hideUnused=True)] [36, 38, 40, 41, 43, 44, 45, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72]
- ticksQuarterLength(min=0.25, max=4, remap=True)¶
Get ticks for quarterLength. If remap is True, the remapQuarterLength() function will be used to scale displayed quarter lengths by log base 2.
>>> from music21 import stream; s = stream.Stream() >>> a = PlotStream(s)
- write(fp=None)¶
Call internal Graphs write() method independently of doneAction set and run with process()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Aarden-Essen analysis routine. See AardenEssen for more details.
PlotWindowedAardenEssen attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedAardenEssen properties
Properties inherited from PlotStream: id
PlotWindowedAardenEssen methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotStream
Base Plot for windowed analysis routines.
PlotWindowedAnalysis attributes
Attributes without Documentation: format
Attributes inherited from PlotStream: values
PlotWindowedAnalysis properties
Properties inherited from PlotStream: id
PlotWindowedAnalysis methods
- process()¶
Process method here overridden to provide legend.
- write(fp=None)¶
Process method here overridden to provide legend.
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Bellman-Budge analysis routine. See BellmanBudge for more details.
PlotWindowedBellmanBudge attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedBellmanBudge properties
Properties inherited from PlotStream: id
PlotWindowedBellmanBudge methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Krumhansl-Kessler analysis routine. See KrumhanslKessler for more details.
PlotWindowedKrumhanslKessler attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedKrumhanslKessler properties
Properties inherited from PlotStream: id
PlotWindowedKrumhanslKessler methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Simple Weights analysis routine. See SimpleWeights for more details.
PlotWindowedSimpleWeights attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedSimpleWeights properties
Properties inherited from PlotStream: id
PlotWindowedSimpleWeights methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()
Inherits from: PlotWindowedAnalysis, PlotStream
Stream plotting of windowed version of Temperley-Kostka-Payne analysis routine. See TemperleyKostkaPayne for more details.
PlotWindowedTemperleyKostkaPayne attributes
Attributes without Documentation: values
Attributes inherited from PlotWindowedAnalysis: format
PlotWindowedTemperleyKostkaPayne properties
Properties inherited from PlotStream: id
PlotWindowedTemperleyKostkaPayne methods
Methods inherited from PlotWindowedAnalysis: process(), write()
Methods inherited from PlotStream: remapQuarterLength(), show(), ticksDynamics(), ticksOffset(), ticksPitchClass(), ticksPitchClassUsage(), ticksPitchSpaceChromatic(), ticksPitchSpaceOctave(), ticksPitchSpaceQuartertone(), ticksPitchSpaceQuartertoneUsage(), ticksPitchSpaceUsage(), ticksQuarterLength()