[reportlab-users] Piechart labels

[Robin Becker]

Simon Riek wrote:

> I am experimenting with pie-charts also atm and tried to work with

> pointers but when I set the pointerLabelMode to not None, I get very weird

> results. The piechart is deformed and the labels are drawn all over the

> place with no obvious rules for placement (doesn't matter if simpleLabels

> or not, nor does checkLabelOverlap seem to matter). Does anyone have a

> working example for pointers?

> 

> Thanks in advance

> 

> Simon

......
not ideal, but working; this stuff was a nightmare and still doesn't work all 
that well.

######################
from reportlab.graphics.charts.piecharts import Pie
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin

class Drawing_001(_DrawingEditorMixin,Drawing):
	def __init__(self,width=400,height=200,*args,**kw):
		apply(Drawing.__init__,(self,width,height)+args,kw)
		self._add(self,Pie(),name='pie',validate=None,desc=None)
		self.pie.pointerLabelMode='LeftRight'
		self.pie.labels            = ['a','b','c','d']
		self.pie.sameRadii         = True
		self.pie.pointerLabelMode='LeftAndRight'
		self.pie.slices.labelRadius               = 1.2
		self.pie.labels            = ['a', 'b', 'c', 'deee']
		self.pie.simpleLabels      = 0
		self.pie.slices.label_pointer_elbowLength = 5
		self.pie.slices.label_pointer_edgePad     = 5
		self.pie.slices.label_pointer_piePad      = 4
		self.pie.slices.label_textAnchor='boxauto'
		self.pie.width             = 200
		self.pie.height            = 200
		self.pie.pointerLabelMode='LeftRight'

if __name__=="__main__": #NORUNTESTS
	Drawing_001().save(formats=['pdf'],outDir='.',fnRoot=None)
######################
-- 
Robin Becker