[SalesForce] Visualforce pie chart to start at “12 o’clock”

All Visualforce pie charts I see online and the one's I'm developing now seem to just randomly place wedges on the chart. Update: the first wedge is placed with a horizontal center line pointing to 90ยบ

What I'm after is some option to force starting at the same spot. I think "12 o'clock" is the most common one but anything will do. Compare with this example Google chart:

Any ideas? Couldn't find anything in the reference of <apex:chart> or <apex:pieSeries> and the generated Javascript looks scary (plus probably my change would break the moment someone starts interacting with it).

Best Answer

Personally I've gravitated towards using the Google Charts Image Api. Being imaged based it can still work in scenarios where javascript isn't available (i.e. rendering as PDFs or Conga Merges). It also has a ton of parameters to control just about everything (including where the initial value is).

Unfortunately it's been recently deprecated, which for Google, means after 3 years they have the option to start phasing it out.

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