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chart_data_labels.py
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chart_data_labels.py
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#######################################################################
#
# A demo of an various Excel chart data label features that are available
# via an XlsxWriter chart.
#
# Copyright 2013-2020, John McNamara, jmcnamara@cpan.org
#
import xlsxwriter
workbook = xlsxwriter.Workbook('chart_data_labels.xlsx')
worksheet = workbook.add_worksheet()
bold = workbook.add_format({'bold': 1})
# Add the worksheet data that the charts will refer to.
headings = ['Number', 'Data', 'Text']
data = [
[2, 3, 4, 5, 6, 7],
[20, 10, 20, 30, 40, 30],
['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
]
worksheet.write_row('A1', headings, bold)
worksheet.write_column('A2', data[0])
worksheet.write_column('B2', data[1])
worksheet.write_column('C2', data[2])
#######################################################################
#
# Example with standard data labels.
#
# Create a Column chart.
chart1 = workbook.add_chart({'type': 'column'})
# Configure the first series with a polynomial trendline.
chart1.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True},
})
# Add a chart title.
chart1.set_title({'name': 'Chart with standard data labels'})
# Turn off the chart legend.
chart1.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D2', chart1, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with value and category data labels.
#
# Create a Column chart.
chart2 = workbook.add_chart({'type': 'column'})
# Configure the first series with a polynomial trendline.
chart2.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True, 'category': True},
})
# Add a chart title.
chart2.set_title({'name': 'Category and Value data labels'})
# Turn off the chart legend.
chart2.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D18', chart2, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with standard data labels with different font.
#
# Create a Column chart.
chart3 = workbook.add_chart({'type': 'column'})
# Configure the first series with a polynomial trendline.
chart3.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True,
'font': {'bold': True,
'color': 'red',
'rotation': -30}},
})
# Add a chart title.
chart3.set_title({'name': 'Data labels with user defined font'})
# Turn off the chart legend.
chart3.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D34', chart3, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with custom string data labels.
#
# Create a Column chart.
chart4 = workbook.add_chart({'type': 'column'})
# Some custom labels.
custom_labels = [
{'value': 'Amy'},
{'value': 'Bea'},
{'value': 'Eva'},
{'value': 'Fay'},
{'value': 'Liv'},
{'value': 'Una'},
]
# Configure the first series with a polynomial trendline.
chart4.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True, 'custom': custom_labels},
})
# Add a chart title.
chart4.set_title({'name': 'Chart with custom string data labels'})
# Turn off the chart legend.
chart4.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D50', chart4, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with custom data labels from cells.
#
# Create a Column chart.
chart5 = workbook.add_chart({'type': 'column'})
# Some custom labels.
custom_labels = [
{'value': '=Sheet1!$C$2'},
{'value': '=Sheet1!$C$3'},
{'value': '=Sheet1!$C$4'},
{'value': '=Sheet1!$C$5'},
{'value': '=Sheet1!$C$6'},
{'value': '=Sheet1!$C$7'},
]
# Configure the first series with a polynomial trendline.
chart5.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True, 'custom': custom_labels},
})
# Add a chart title.
chart5.set_title({'name': 'Chart with custom data labels from cells'})
# Turn off the chart legend.
chart5.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D66', chart5, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with custom and default data labels.
#
# Create a Column chart.
chart6 = workbook.add_chart({'type': 'column'})
# Some custom labels. The undef items will get the default value.
# We also set a font for the custom items as an extra example.
custom_labels = [
{'value': '=Sheet1!$C$2', 'font': {'color': 'red'}},
None,
{'value': '=Sheet1!$C$4', 'font': {'color': 'red'}},
{'value': '=Sheet1!$C$5', 'font': {'color': 'red'}},
]
# Configure the first series with a polynomial trendline.
chart6.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True, 'custom': custom_labels},
})
# Add a chart title.
chart6.set_title({'name': 'Mixed custom and default data labels'})
# Turn off the chart legend.
chart6.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D82', chart6, {'x_offset': 25, 'y_offset': 10})
#######################################################################
#
# Example with deleted custom data labels.
#
# Create a Column chart.
chart7 = workbook.add_chart({'type': 'column'})
# Some deleted custom labels and defaults (undef). This allows us to
# highlight certain values such as the minimum and maximum.
custom_labels = [
{'delete': True},
None,
{'delete': True},
{'delete': True},
None,
{'delete': True},
]
# Configure the first series with a polynomial trendline.
chart7.add_series({
'categories': '=Sheet1!$A$2:$A$7',
'values': '=Sheet1!$B$2:$B$7',
'data_labels': {'value': True, 'custom': custom_labels},
})
# Add a chart title.
chart7.set_title({'name': 'Chart with deleted data labels'})
# Turn off the chart legend.
chart7.set_legend({'none': True})
# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D98', chart7, {'x_offset': 25, 'y_offset': 10})
workbook.close()