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Just another ordinary pie chart

2 Dec 2009
opensource rl-toolkit

This shows a Pie chart with a Legend, being saved as both a bitmap for the web and a PDF chart. This code was generated using Diagra (ReportLab's commercial charts package), which allows you to define charts in a GUI. However, you don't need this package to run it, and all the chart features demonstrated are available in our open source package.

# Autogenerated by ReportLab guiedit do not edit  
# this code was generated by Diagra, ReportLab Commercial drawing editor  
# It took only few clicks to generate the code.
from reportlab.lib.pagesizes import cm, inch
from import Pie
from import Legend
from reportlab.lib.colors import Color, PCMYKColor
from import Drawing, _DrawingEditorMixin

class MyDrawing(_DrawingEditorMixin,Drawing):
    def __init__(self,width=400,height=200,*args,**kw):
        self.chart.x                        = 20
        self.chart.y                        = (self.height-self.chart.height)/2
        self.chart.slices.strokeWidth       = 1
        self.chart.slices.popout            = 1
        self.chart.direction                = 'clockwise'
        self.chart.width                    = self.chart.height
        self.chart.startAngle               = 90
        self.legend.x                       = width - 20
        self.legend.y                       = 0
        self.legend.boxAnchor               = 'se'
        self.legend.subCols[1].align        = 'right'
        self.chart.height                   = 99
        self.chart.width                    = 99
        self.legend.alignment               = 'right'
        self.legend.columnMaximum           = 9
        self.legend.fontSize                = 13
        # these data can be read from external sources
        data = (5, 4, 3, 2, 1)
        categories = ('sale','marketing','travel','health','misc')
        colors = [PCMYKColor(100,50,30,x) for x in (50,40,30,20,10)]         = data
        self.chart.labels       = map(str,
        self.legend.colorNamePairs = zip(colors, categories)
        for i, color in enumerate(colors): self.chart.slices[i].fillColor  = color

if __name__=="__main__": #NORUNTESTS