A breakdown pie chart - ReportLab Snippets (Beta)

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A breakdown pie chart

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 (ReportLabs commercial charts package), which allows you to define charts in a GUI. However, you dont 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)