Example of creating Excel Pie charts. Chart 1 in the following example is:
Chart 2 shows how to set segment colors.
It is possible to define chart colors for most types of XlsxWriter charts via
the add_series()
method. However, Pie charts are a special case since
each segment is represented as a point and as such it is necessary to assign
formatting to each point in the series.
Chart 3 shows how to rotate the segments of the chart:
#######################################################################
#
# An example of creating Excel Pie charts with Python and XlsxWriter.
#
# The demo also shows how to set segment colors. It is possible to
# define chart colors for most types of XlsxWriter charts
# via the add_series() method. However, Pie/Doughnut charts are a special
# case since each segment is represented as a point so it is necessary to
# assign formatting to each point in the series.
#
# SPDX-License-Identifier: BSD-2-Clause
# Copyright 2013-2023, John McNamara, jmcnamara@cpan.org
#
import xlsxwriter
workbook = xlsxwriter.Workbook('chart_pie.xlsx')
worksheet = workbook.add_worksheet()
bold = workbook.add_format({'bold': 1})
# Add the worksheet data that the charts will refer to.
headings = ['Category', 'Values']
data = [
['Apple', 'Cherry', 'Pecan'],
[60, 30, 10],
]
worksheet.write_row('A1', headings, bold)
worksheet.write_column('A2', data[0])
worksheet.write_column('B2', data[1])
#######################################################################
#
# Create a new chart object.
#
chart1 = workbook.add_chart({'type': 'pie'})
# Configure the series. Note the use of the list syntax to define ranges:
chart1.add_series({
'name': 'Pie sales data',
'categories': ['Sheet1', 1, 0, 3, 0],
'values': ['Sheet1', 1, 1, 3, 1],
})
# Add a title.
chart1.set_title({'name': 'Popular Pie Types'})
# Set an Excel chart style. Colors with white outline and shadow.
chart1.set_style(10)
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('C2', chart1, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Create a Pie chart with user defined segment colors.
#
# Create an example Pie chart like above.
chart2 = workbook.add_chart({'type': 'pie'})
# Configure the series and add user defined segment colors.
chart2.add_series({
'name': 'Pie sales data',
'categories': '=Sheet1!$A$2:$A$4',
'values': '=Sheet1!$B$2:$B$4',
'points': [
{'fill': {'color': '#5ABA10'}},
{'fill': {'color': '#FE110E'}},
{'fill': {'color': '#CA5C05'}},
],
})
# Add a title.
chart2.set_title({'name': 'Pie Chart with user defined colors'})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('C18', chart2, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Create a Pie chart with rotation of the segments.
#
# Create an example Pie chart like above.
chart3 = workbook.add_chart({'type': 'pie'})
# Configure the series.
chart3.add_series({
'name': 'Pie sales data',
'categories': '=Sheet1!$A$2:$A$4',
'values': '=Sheet1!$B$2:$B$4',
})
# Add a title.
chart3.set_title({'name': 'Pie Chart with segment rotation'})
# Change the angle/rotation of the first segment.
chart3.set_rotation(90)
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('C34', chart3, {'x_offset': 25, 'y_offset': 10})
workbook.close()