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# Copyright (c) 2007-2008 by Lorenzo Gil Sanchez <lorenzo.gil.sanchez@gmail.com>
#
# This file is part of PyCha.
#
# PyCha is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# PyCha is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PyCha. If not, see <http://www.gnu.org/licenses/>.
import cairo
import pycha.stackedbar
def barChart(output):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 600, 300)
downloads = (('0.1.0', 193),
('0.2.0', 567),
('0.3.0', 835),
('0.4.0', 161), ('0.4.1', 689), ('0.4.2', 234),
('0.5.0', 913), ('0.5.1', 163), ('0.5.2', 1474))
dataSet = (
('main release', [(0, 193), (1, 567), (2, 835), (3, 161), (4, 913)]),
('1st bug fix', [(0, 0), (1, 0), (2, 0), (3, 689), (4, 163)]),
('2nd bug fix', [(0, 0), (1, 0), (2, 0), (3, 234), (4, 1474)]),
)
options = {
'axis': {
'x': {
'ticks': [dict(v=0, label='0.1 (Oct 07)'),
dict(v=1, label='0.2 (Oct 07)'),
dict(v=2, label='0.3 (Mar 08)'),
dict(v=3, label='0.4 (Oct 08)'),
dict(v=4, label='0.5 (Mar 09)')],
'label': 'Releases',
},
'y': {
'label': 'Downloads',
}
},
'background': {
'chartColor': '#ffeeff',
'baseColor': '#ffffff',
'lineColor': '#444444'
},
'colorScheme': {
'name': 'gradient',
'args': {
'initialColor': 'green',
},
},
'padding': {
'left': 75,
'bottom': 55,
},
'legend': {
'position': {
'top': 20,
'left': 80,
}
},
'title': 'Pycha Downloads'
}
chart = pycha.stackedbar.StackedVerticalBarChart(surface, options)
chart.addDataset(dataSet)
chart.render()
surface.write_to_png(output)
if __name__ == '__main__':
barChart('pychadownloads.png')
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