[reportlab-users] Wedge labels overlapping in pie charts

[Nizam Sayeed]

On 10/26/07, Nizam Sayeed <ibnameen at gmail.com> wrote:

>

> On 10/26/07, Robin Becker <robin at reportlab.com> wrote:

> >

> > Nizam Sayeed wrote:

> > > Hello all,

> > >

> > > I wanted to know if there is a way to tweak the positions of wedge

> > labels on

> > > pie charts. I am generating some pie charts where the slices are quite

> > small

> > > and are back to back. Short of re-organizing the slice order based on

> > the

> > > size, is there a simple way to have reportlab space out the wedge

> > labels a

> > > bit so as to prevent any overlap? Sample chart is attached. Thanks.

> > >

> > > Best regards,

> > >

> > > Nizam Sayeed

> > .......

> > This is quite a hard problem. We have some possible solutions including

> >

> > 1) hand labelling (or adjusting the positions of labels by hand).

> > 2) set the chart.checkLabelOverlap attribute to 1 (this may help).

> > 3) change the slice ordering mode ie chart.orderMode = 'alternate' note

> > that

> > this last will certainly alter the way in which the slices are laid out

> > and it

> > may be more difficult to do the legends etc etc.

> > --

> > Robin Becker

> > _______________________________________________

> > reportlab-users mailing list

> > reportlab-users at reportlab.com

> > http://two.pairlist.net/mailman/listinfo/reportlab-users

> >

>

> Thanks Robin. I will try the first two suggestions and see what happens. I

> am already doing something similar to number 3. In my version, I alternate

> the slices (small,large,small,large...) using a custom method that I have

> which also returns colorNamePairs so that it can be fed to the legend.

>

> -- Nizam



I tried option 2 (checkLabelOverlap = 1) and this fixed it! Thanks again.

-- Nizam
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