#######################################################################
#
# An example of creating Excel Column charts with data tables using
# Python and XlsxWriter.
#
# Copyright 2013-2016, John McNamara, jmcnamara@cpan.org
#
import xlsxwriter

workbook = xlsxwriter.Workbook('chart_data_table.xlsx')
worksheet = workbook.add_worksheet()
bold = workbook.add_format({'bold': 1})

# Add the worksheet data that the charts will refer to.
headings = ['Number', 'Batch 1', 'Batch 2']
data = [
    [2, 3, 4, 5, 6, 7],
    [10, 40, 50, 20, 10, 50],
    [30, 60, 70, 50, 40, 30],
]

worksheet.write_row('A1', headings, bold)
worksheet.write_column('A2', data[0])
worksheet.write_column('B2', data[1])
worksheet.write_column('C2', data[2])


#######################################################################
#
# Create a column chart with a data table.
#
chart1 = workbook.add_chart({'type': 'column'})

# Configure the first series.
chart1.add_series({
    'name':       '=Sheet1!$B$1',
    'categories': '=Sheet1!$A$2:$A$7',
    'values':     '=Sheet1!$B$2:$B$7',
})

# Configure second series. Note use of alternative syntax to define ranges.
chart1.add_series({
    'name':       ['Sheet1', 0, 2],
    'categories': ['Sheet1', 1, 0, 6, 0],
    'values':     ['Sheet1', 1, 2, 6, 2],
})

# Add a chart title and some axis labels.
chart1.set_title({'name': 'Chart with Data Table'})
chart1.set_x_axis({'name': 'Test number'})
chart1.set_y_axis({'name': 'Sample length (mm)'})

# Set a default data table on the X-Axis.
chart1.set_table()

# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D2', chart1, {'x_offset': 25, 'y_offset': 10})

#######################################################################
#
# Create a column chart with a data table and legend keys.
#
chart2 = workbook.add_chart({'type': 'column'})

# Configure the first series.
chart2.add_series({
    'name':       '=Sheet1!$B$1',
    'categories': '=Sheet1!$A$2:$A$7',
    'values':     '=Sheet1!$B$2:$B$7',
})

# Configure second series.
chart2.add_series({
    'name':       '=Sheet1!$C$1',
    'categories': '=Sheet1!$A$2:$A$7',
    'values':     '=Sheet1!$C$2:$C$7',
})

# Add a chart title and some axis labels.
chart2.set_title({'name': 'Data Table with legend keys'})
chart2.set_x_axis({'name': 'Test number'})
chart2.set_y_axis({'name': 'Sample length (mm)'})

# Set a data table on the X-Axis with the legend keys shown.
chart2.set_table({'show_keys': True})

# Hide the chart legend since the keys are shown on the data table.
chart2.set_legend({'position': 'none'})

# Insert the chart into the worksheet (with an offset).
worksheet.insert_chart('D18', chart2, {'x_offset': 25, 'y_offset': 10})

workbook.close()
