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Pie Plots

arc_offsets type: list

Attribute

Default: None. You can draw each pie "slice" shifted off-center. This attribute, if non-None, must be a number sequence whose length is equal to the number of pie slices. The Nth value in arc_offsets specify the amount of offset (from the center of the circle) for the Nth slice. The value of None will draw all the slices anchored at the center.

arrow_style type: arrow.T

Attribute

Default: None. The style of arrow that connects a label to the corresponding "pie". See arrow.

center type: (x,y)

Attribute

Default: None. The location of the center of the pie.

data type: any

Attribute

Default: None. Specifies the data points. See chart_data.

data_col type: int

Attribute

Default: 1. The column, within "data", from which the data values are retrieved.

fill_styles type: list

Attribute

Default: ['fill_style.black', 'fill_style.gray70', 'fill_style.diag', 'fill_style.gray50', 'fill_style.vert', 'fill_style.rdiag', 'fill_style.white', 'fill_style.gray30', 'fill_style.gray10', 'fill_style.diag2', 'fill_style.rdiag2', 'fill_style.diag3', 'fill_style.horiz', 'fill_style.gray90', 'fill_style.rdiag3', 'fill_style.wave', 'fill_style.vwave', 'fill_style.stitch', 'fill_style.lines']. The fill style of each item. The length of the list should be equal to the length of the data.

label_col type: int

Attribute

Default: 0. The column, within "data", from which the labels of items are retrieved.

label_fill_style type: fill_style.T

Attribute

Default: fill_style.default. The fill style of the frame surrounding each label. See fill_style.

label_line_style type: line_style.T

Attribute

Default: None. The style of the frame surrounding each label. See line_style.

label_offset type: number

Attribute

Default: None. The distance from the center of each label.

line_style type: line_style.T

Attribute

Default: line_style.black. The style of the outer edge of each pie slice. See line_style.

radius type: number

Attribute

Default: None. The radius of the pie.

shadow type: (xoff,yoff,fill)

Attribute

Default: None. The value is either None or a tuple. When non-None, a drop-shadow is drawn beneath the object. X-off, and y-off specifies the offset of the shadow relative to the object, and fill specifies the style of the shadow (see fill_style).

start_angle type: number

Attribute

Default: 90. The angle at which the first item is drawn.

Sample pie chart

Below is the source code that produces the above chart. ../demos/pietest.py

from pychart import *

import sys
data = [("foo", 10),("bar", 20), ("baz", 30), ("ao", 40)]

ar = area.T(size=(150,150), legend=legend.T(),
            x_grid_style = None, y_grid_style = None)

plot = pie_plot.T(data=data, arc_offsets=[0,10,0,10],
                  shadow = (2, -2, fill_style.gray50),
                  label_offset = 25,
                  arrow_style = arrow.a3)
ar.add_plot(plot)
ar.draw()