Mercurial > moin > 1.9
view MoinMoin/stats/chart.py @ 0:77665d8e2254
tag of nonpublic@localhost--archive/moin--enterprise--1.5--base-0
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imported from: moin--main--1.5--base-0
author | Thomas Waldmann <tw-public@gmx.de> |
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date | Thu, 22 Sep 2005 15:09:50 +0000 |
parents | |
children | 84dc5d29721a |
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# -*- coding: iso-8859-1 -*- """ MoinMoin - Charts This is a wrapper for the "gdchart" module. Example: import random c = Chart() c.addData(ChartData([random.gauss(0, 5.0) for i in range(20)], color='blue')) c.option(title = 'gdchart Demo') c.draw(Chart.GDC_LINE, (600, 300), 'test.gif') @copyright: 2002-2004 by Jürgen Hermann <jh@web.de> @license: GNU GPL, see COPYING for details. """ import gdchart from MoinMoin.webapi.color import Color class ChartData: """ Data set for one line in a chart, including properties like the color of that line. """ def __init__(self, data, color='black'): """ Create a data set. @param data: tuple / list of numbers @param color: rendering color (triple, '#RRGGBB' or color name) """ self.data = data self.color = color class Chart: """ Wrapper for "gdchart". All GDC* constants are available as class attributes. """ DEFAULTS = gdchart.option() def __init__(self): # Get a copy of the default options self.options = self.DEFAULTS.copy() self.datasets = [] self.option( bg_color = 0xffffff, line_color = 0x000000 ) def addData(self, data): self.datasets.append(data) def option(self, **args): # Save option values in the object's dictionary. self.options.update(args) def draw(self, style, size, output, labels=None): args = [] colors = [] for dataset in self.datasets: if isinstance(dataset, ChartData): args.append(dataset.data) colors.append(dataset.color) else: args.append(dataset) colors.append('black') # Default for X axis labels (numbered 1..n) if not labels: labels = map(str, range(1, len(args[0])+1)) # set colors for the data sets if colors: self.option(set_color = map(int, map(Color, colors))) # pass options to gdchart and render the chart gdchart.option(**self.options) # limit label length in order to workaround bugs in gdchart labels = [x[:32] for x in labels] gdchart.chart(*((style, size, output, labels) + tuple(args))) # copy GDC constants to Chart's namespace for key, val in vars(gdchart).items(): if key.startswith('GDC'): setattr(Chart, key, val) if __name__ == "__main__": import os, sys, random c = Chart() c.addData(ChartData([random.randrange(0,i+1) for i in range(20)], color='green')) c.addData(ChartData([random.gauss(30, 5.0) for i in range(20)], color='blue')) c.option( title = 'gdchart Demo', xtitle = 'X axis', ytitle = 'random values' ) c.draw(Chart.GDC_LINE, (600,300), 'test.gif') if sys.platform == "win32": os.system("explorer test.gif") else: os.system("display test.gif &")