डोनट चार्ट (डोनट चार्ट के रूप में भी जाना जाता है) एक पाई चार्ट पर एक भिन्नता है, सिवाय इसके कि इसके केंद्र में एक गोल छेद होता है जो इसे डोनट जैसा दिखता है, इसलिए नाम। अतिरिक्त डेटा प्रदर्शित करने के लिए इस खाली स्थान का उपयोग किया जा सकता है।
उदाहरण
# import xlsxwriter module
import xlsxwriter
# Workbook() takes one, non-optional, argument which is the filename #that we want to create.
workbook = xlsxwriter.Workbook('chart_doughnut1.xlsx')
# The workbook object is then used to add new worksheet via the #add_worksheet() method.
worksheet = workbook.add_worksheet()
# Create a new Format object to formats cells in worksheets using
# add_format() method .
# here we create bold format object .
bold = workbook.add_format({'bold': 1})
# Add the worksheet data that the charts will refer to.
headings = ['Category', 'Values']
data = [
['Glazed', 'Chocolate', 'Cream'],
[50, 35, 15],
]
# Write a row of data starting from 'A1' with bold format .
worksheet.write_row('A1', headings, bold)
# Write a column of data starting from 'A2', 'B2' respectively .
worksheet.write_column('A2', data[0])
worksheet.write_column('B2', data[1])
# Create a chart object that can be added to a worksheet using #add_chart() method.
# here we create a doughnut chart object .
chart1 = workbook.add_chart({'type': 'doughnut'})
# Add a data series to a chart using add_series method.
# Configure the first series.syntax to define ranges
# [sheetname, first_row, first_col, last_row, last_col].
chart1.add_series({
'name': 'Doughnut sales data',
'categories': ['Sheet1', 1, 0, 3, 0],
'values': ['Sheet1', 1, 1, 3, 1],
})
# Add a chart title
chart1.set_title({'name': 'Popular Doughnut Types'})
# Set an Excel chart style. Colors with white outline and shadow.
chart1.set_style(10)
# add chart to the worksheet with an offset,at the top-left corner #of a chart is anchored to cell C2.
worksheet.insert_chart('C2', chart1, {'x_offset': 25, 'y_offset': 10})
# Finally, close the Excel file via the close() method.
workbook.close()