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A breakdown pie chart

 

Author:

Posted:

Dec. 3, 2009

Language:

Tags:

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
from reportlab.graphics.charts.piecharts import Pie
from reportlab.lib.colors import black, red, purple, green, maroon, brown, pink, white, HexColor
from reportlab.graphics.charts.legends import Legend
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin
from reportlab.lib.validators import Auto
from reportlab.lib.colors import HexColor, black

pdf_chart_colors = [
        HexColor("#0000e5"),
        HexColor("#1f1feb"),
        HexColor("#5757f0"),
        HexColor("#8f8ff5"),
        HexColor("#c7c7fa"),
        HexColor("#f5c2c2"),
        HexColor("#eb8585"),
        HexColor("#e04747"),
        HexColor("#d60a0a"),
        HexColor("#cc0000"),
        HexColor("#ff0000"),
        ]

def setItems(n, obj, attr, values):
    m = len(values)
    i = m // n
    for j in xrange(n):
        setattr(obj[j],attr,values[j*i % m])

class BreakdownPieDrawing(_DrawingEditorMixin,Drawing):
    def __init__(self,width=400,height=200,*args,**kw):
        apply(Drawing.__init__,(self,width,height)+args,kw)
        # adding a pie chart to the drawing
        self._add(self,Pie(),name='pie',validate=None,desc=None)
        self.pie.width                  = 150
        self.pie.height                 = self.pie.width
        self.pie.x                      = 20
        self.pie.y                      = (height-self.pie.height)/2
        self.pie.data = [26.90,13.30,11.10,9.40,8.50,7.80,7.00,6.20,8.80,1.00]
        self.pie.labels = ['Financials','Energy','Health Care','Telecoms','Consumer','Consumer 2','Industrials','Materials','Other','Liquid Assets']
        self.pie.simpleLabels           = 1
        self.pie.slices.label_visible   = 0
        self.pie.slices.fontColor       = None
        self.pie.slices.strokeColor     = white
        self.pie.slices.strokeWidth     = 1
        # adding legend
        self._add(self,Legend(),name='legend',validate=None,desc=None)
        self.legend.x               = 200
        self.legend.y               = height/2
        self.legend.dx              = 8
        self.legend.dy              = 8
        self.legend.fontName        = 'Helvetica'
        self.legend.fontSize        = 7
        self.legend.boxAnchor       = 'w'
        self.legend.columnMaximum   = 10
        self.legend.strokeWidth     = 1
        self.legend.strokeColor     = black
        self.legend.deltax          = 75
        self.legend.deltay          = 10
        self.legend.autoXPadding    = 5
        self.legend.yGap            = 0
        self.legend.dxTextSpace     = 5
        self.legend.alignment       = 'right'
        self.legend.dividerLines    = 1|2|4
        self.legend.dividerOffsY    = 4.5
        self.legend.subCols.rpad    = 30
        n = len(self.pie.data)
        setItems(n,self.pie.slices,'fillColor',pdf_chart_colors)
        self.legend.colorNamePairs = [(self.pie.slices[i].fillColor, (self.pie.labels[i][0:20], '%0.2f' % self.pie.data[i])) for i in xrange(n)]

if __name__=="__main__": #NORUNTESTS
    drawing = BreakdownPieDrawing()
    # the drawing will be saved as pdf and png below, you could do other things with it obviously.
    drawing.save(formats=['pdf','png'],outDir='.',fnRoot=None)

#Autogenerated by ReportLab guiedit do not editfrom reportlab.graphics.charts.piecharts import Piefrom reportlab.lib.colors import black, red, purple, green, maroon, brown, pink, white, HexColorfrom reportlab.graphics.charts.legends import Legendfrom reportlab.graphics.shapes import Drawing, _DrawingEditorMixinfrom reportlab.lib.validators import Autofrom reportlab.lib.colors import HexColor, blackpdf_chart_colors = [        HexColor("#0000e5"),        HexColor("#1f1feb"),        HexColor("#5757f0"),        HexColor("#8f8ff5"),        HexColor("#c7c7fa"),        HexColor("#f5c2c2"),        HexColor("#eb8585"),        HexColor("#e04747"),        HexColor("#d60a0a"),        HexColor("#cc0000"),        HexColor("#ff0000"),        ]def setItems(n, obj, attr, values):    m = len(values)    i = m // n    for j in xrange(n):        setattr(obj[j],attr,values[j*i % m])class BreakdownPieDrawing(_DrawingEditorMixin,Drawing):    def __init__(self,width=400,height=200,*args,**kw):        apply(Drawing.__init__,(self,width,height)+args,kw)        # adding a pie chart to the drawing        self._add(self,Pie(),name='pie',validate=None,desc=None)        self.pie.width                  = 150        self.pie.height                 = self.pie.width        self.pie.x                      = 20        self.pie.y                      = (height-self.pie.height)/2        self.pie.data = [26.90,13.30,11.10,9.40,8.50,7.80,7.00,6.20,8.80,1.00]        self.pie.labels = ['Financials','Energy','Health Care','Telecoms','Consumer','Consumer 2','Industrials','Materials','Other','Liquid Assets']        self.pie.simpleLabels           = 1        self.pie.slices.label_visible   = 0        self.pie.slices.fontColor       = None        self.pie.slices.strokeColor     = white        self.pie.slices.strokeWidth     = 1        # adding legend        self._add(self,Legend(),name='legend',validate=None,desc=None)        self.legend.x               = 200        self.legend.y               = height/2        self.legend.dx              = 8        self.legend.dy              = 8        self.legend.fontName        = 'Helvetica'        self.legend.fontSize        = 7        self.legend.boxAnchor       = 'w'        self.legend.columnMaximum   = 10        self.legend.strokeWidth     = 1        self.legend.strokeColor     = black        self.legend.deltax          = 75        self.legend.deltay          = 10        self.legend.autoXPadding    = 5        self.legend.yGap            = 0        self.legend.dxTextSpace     = 5        self.legend.alignment       = 'right'        self.legend.dividerLines    = 1|2|4        self.legend.dividerOffsY    = 4.5        self.legend.subCols.rpad    = 30        n = len(self.pie.data)        setItems(n,self.pie.slices,'fillColor',pdf_chart_colors)        self.legend.colorNamePairs = [(self.pie.slices[i].fillColor, (self.pie.labels[i][0:20], '%0.2f' % self.pie.data[i])) for i in xrange(n)]if __name__=="__main__": #NORUNTESTS    drawing = BreakdownPieDrawing()    # the drawing will be saved as pdf and png below, you could do other things with it obviously.    drawing.save(formats=['pdf','png'],outDir='.',fnRoot=None)

 

 

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