Source code for line

#!/usr/bin/env python
"""
Copyright Gerald Kaszuba 2008

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

from __future__ import division

import os
import sys
import math

ROOT = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, os.path.join(ROOT, '..'))

from pygooglechart import Chart
from pygooglechart import SimpleLineChart
from pygooglechart import XYLineChart
from pygooglechart import SparkLineChart
from pygooglechart import Axis

import settings
import helper

[docs]def simple_random(): chart = SimpleLineChart(settings.width, settings.height, y_range=(0, 100)) chart.add_data(helper.random_data()) chart.download('line-simple-random.png')
[docs]def xy_random(): chart = XYLineChart(settings.width, settings.height, x_range=(0, 100), y_range=(0, 100)) chart.add_data(helper.random_data()) chart.add_data(helper.random_data()) chart.download('line-xy-random.png')
[docs]def xy_rect(): chart = XYLineChart(settings.width, settings.height, x_range=(0, 100), y_range=(0, 100)) chart.add_data([10, 90, 90, 10, 10]) chart.add_data([10, 10, 90, 90, 10]) chart.download('line-xy-rect.png')
[docs]def xy_circle(): chart = XYLineChart(settings.width, settings.height, x_range=(0, 100), y_range=(0, 100)) steps = 40 xradius = 25 yradius = 45 xmid = 50 ymid = 50 xlist = [] ylist = [] for angle in range(0, steps + 1): angle = float(angle) / steps * math.pi * 2 xlist.append(math.cos(angle) * xradius + xmid) ylist.append(math.sin(angle) * yradius + ymid) chart.add_data(xlist) chart.add_data(ylist) chart.download('line-xy-circle.png')
[docs]def sparklines(): chart = SparkLineChart(settings.width, settings.height) chart.add_data(helper.random_data()) chart.download('line-sparkline.png')
[docs]def fill(): # Set the vertical range from 0 to 50 max_y = 50 chart = SimpleLineChart(200, 125, y_range=[0, max_y]) # First value is the highest Y value. Two of them are needed to be # plottable. chart.add_data([max_y] * 2) # 3 sets of real data chart.add_data([28, 30, 31, 33, 35, 36, 42, 48, 43, 37, 32, 24, 28]) chart.add_data([16, 18, 18, 21, 23, 23, 29, 36, 31, 25, 20, 12, 17]) chart.add_data([7, 9, 9, 12, 14, 14, 20, 27, 21, 15, 10, 3, 7]) # Last value is the lowest in the Y axis. chart.add_data([0] * 2) # Black lines chart.set_colours(['000000'] * 5) # Filled colours # from the top to the first real data chart.add_fill_range('76A4FB', 0, 1) # Between the 3 data values chart.add_fill_range('224499', 1, 2) chart.add_fill_range('FF0000', 2, 3) # from the last real data to the chart.add_fill_range('80C65A', 3, 4) # Some axis data chart.set_axis_labels(Axis.LEFT, ['', max_y / 2, max_y]) chart.set_axis_labels(Axis.BOTTOM, ['Sep', 'Oct', 'Nov', 'Dec']) chart.download('line-fill.png')
[docs]def stripes(): # Set the vertical range from 0 to 100 max_y = 100 # Chart size of 200x125 pixels and specifying the range for the Y axis chart = SimpleLineChart(200, 125, y_range=[0, max_y]) # Add the chart data data = [ 32, 34, 34, 32, 34, 34, 32, 32, 32, 34, 34, 32, 29, 29, 34, 34, 34, 37, 37, 39, 42, 47, 50, 54, 57, 60, 60, 60, 60, 60, 60, 60, 62, 62, 60, 55, 55, 52, 47, 44, 44, 40, 40, 37, 34, 34, 32, 32, 32, 31, 32 ] chart.add_data(data) # Set the line colour to blue chart.set_colours(['0000FF']) # Set the vertical stripes chart.fill_linear_stripes(Chart.CHART, 0, 'CCCCCC', 0.2, 'FFFFFF', 0.2) # Set the horizontal dotted lines chart.set_grid(0, 25, 5, 5) # The Y axis labels contains 0 to 100 skipping every 25, but remove the # first number because it's obvious and gets in the way of the first X # label. left_axis = list(range(0, max_y + 1, 25)) left_axis[0] = '' chart.set_axis_labels(Axis.LEFT, left_axis) # X axis labels chart.set_axis_labels(Axis.BOTTOM, \ ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun']) chart.download('line-stripes.png')
[docs]def main(): simple_random() xy_random() xy_rect() xy_circle() sparklines() fill() stripes()
if __name__ == '__main__': main()