图表至少由一系列一个或多个数据点组成。系列本身由对单元格范围的引用组成。为了在Excel工作表上绘制图表，首先，创建特定图表类型的图表对象（即柱形图等）。创建图表对象后，在其中插入数据，最后，将该图表对象添加到图纸对象中。
# import xlsxwriter module
import xlsxwriter
#Workbook()takes one,non-optional,argument which is the filename
#that we want to create.
workbook = xlsxwriter.Workbook('chart_pattern.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 = ['Shingle', 'Brick']
data = [
[105, 150, 130, 90 ],
[50, 120, 100, 110],
]
# 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 column chart object
chart = workbook.add_chart({'type': 'column'})
# Add a data series with pattern to a chart using add_series method. # The gap is used to make the patterns more visible.
# Configure the first series.= Sheet1 !$A$1 is equivalent to ['Sheet1', 0, 0].
# note : spaces is not inserted in b/w = and Sheet1, Sheet1 and !
# if space is inserted it throws warning.
chart.add_series({
'name': '= Sheet1 !$A$1',
'values': '= Sheet1 !$A$2:$A$5',
'pattern': {
'pattern': 'shingle',
'fg_color': '# 804000',
'bg_color': '# c68c53'
},
'border': {'color': '# 804000'},
'gap': 70,
})
# Configure a second series.
chart.add_series({
'name': '= Sheet1 !$B$1',
'values': '= Sheet1 !$B$2:$B$5',
'pattern': {
'pattern': 'horizontal_brick',
'fg_color': '# b30000',
'bg_color': '# ff6666'
},
'border': {'color': '# b30000'},
})
# Add a chart title
chart.set_title ({'name': 'Cladding types'})
# Add x-axis label
chart.set_x_axis({'name': 'Region'})
# Add y-axis label
chart.set_y_axis({'name': 'Number of houses'})
# add chart to the worksheet with given offset values at the top-#left corner of a chart is anchored to cell D2 .
worksheet.insert_chart('D2', chart, {'x_offset': 25, 'y_offset': 10})
# Finally, close the Excel file via the close() method.
workbook.close()