`import pygal
the_data = [["Firefox", [None, None, 0, 16.6, 25, 31, 36.4, 45.5, 46.3, 42.8, 37.1]],
["Chrome", [None, None, None, None, None, None, 0, 3.9, 10.8, 23.8, 35.3]],
["IE", [85.8, 84.6, 84.7, 74.5, 66, 58.6, 54.7, 44.8, 36.2, 26.6, 20.1]],
["Others", [14.2, 15.4, 15.3, 8.9, 9, 10.4, 8.9, 5.8, 6.7, 6.8, 7.5]]]
chart = pygal.StackedLine(fill=True)
chart.title = "The browsers usage"
chart.x_labels = map(str, (2002, 2013))
for label, data_points in the_data:
chart.add(label, data_points)
chart.render()
` what is the problem because the code looks correct please help because this is a schools project
I think you had a mistake in this line:
basically
map(str, (2002, 2013))
creates a collection with only two values["2002", "2013"]
and because you have more columns the library fills it with other numbers (1,2,3), what you want is to have the list of all the years:check the range function, this will generate the collection with
['2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '2010', '2011', '2012']