Python XlsxWriter - Bar Chart

The bar chart is similar to a column chart, except for the fact that the data is represented in proportionate horizontal bars instead of vertical columns. To produce a bar chart, the type argument of add_chart() method must be set to 'bar'.

chart1 = workbook.add_chart({'type': 'bar'})

The bar chart appears as follows −

Bar Chart1

There are two subtypes of bar chart, namely stacked and percent_stacked. In the stacked chart, the bars of different colors for a certain category are placed one after the other. In a percent_stacked chart, the length of each bar shows its percentage in the total value in each category.

chart1 = workbook.add_chart({
   'type': 'bar',
   'subtype': 'percent_stacked'
})

Example

Program to generate percent stacked bar chart is given below −

import xlsxwriter

wb = xlsxwriter.Workbook('hello.xlsx')
worksheet = wb.add_worksheet()
chart1 = wb.add_chart({'type': 'bar', 'subtype': 'percent_stacked'})

# Add the worksheet data that the charts will refer to.
headings = ['Name', 'Phy', 'Maths']
data = [
   ["Jay", 30, 60],
   ["Mohan", 40, 50],
   ["Veeru", 60, 70],
]

worksheet.write_row(0,0, headings)
worksheet.write_row(1,0, data[0])
worksheet.write_row(2,0, data[1])
worksheet.write_row(3,0, data[2])

chart1.add_series({
   'name': '=Sheet1!$B$1',
   'categories': '=Sheet1!$A$2:$A$4',
   'values': '=Sheet1!$B$2:$B$4',
})

chart1.add_series({
   'name': ['Sheet1', 0, 2],
   'categories': ['Sheet1', 1, 0, 3, 0],
   'values': ['Sheet1', 1, 2, 3, 2],
})
chart1.set_title ({'name': 'Marklist', 'name_font':
   {'name':'Times New Roman', 'size':24}})

chart1.set_x_axis({'name': 'Students', 'name_font':
   {'name':'Arial', 'size':16, 'bold':True}, })

chart1.set_y_axis({'name': 'Marks','name_font':
   {'name':'Arial', 'size':16, 'bold':True},
   'num_font':{'name':'Arial', 'italic':True}})

chart1.set_legend({'position':'bottom', 'font':
   {'name':'calibri','size': 9, 'bold': True}})

worksheet.insert_chart('B7', chart1)

wb.close()

Output

The output file will look like the one given below −

Bar Chart2
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