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Has any one got any examples of drawing pie charts with vectors as markers with OpenLayers?

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  • Please check out thematicmapping.org/playground/…
    – Sunil
    Feb 27, 2013 at 10:05
  • I'm sure there'll be a growing number of people asking this question with Google Image charts being deprecated...I'm searching high and low for a solution myself. The options I've looked at so far are pretty terrible. #1 draw charts directly somehow by hand in OL (out of poly's?); #2 use Google Charts print function to export an image from the <canvas> tag, which is hacky as hell and doesn't even support IE9.
    – danwild
    Nov 17, 2014 at 3:10
  • I would go for ExtJS (N.B. i am not evangelist of that)
    – SIslam
    May 9, 2015 at 8:56

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An example can be found at this website:

http://thematicmapping.org/playground/openlayers_piecharts_geojson_google_chart.php

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Well, took me a couple of hours but I found one way to do it.

It requires you to use dojo.js, (which unfortunately I can't use for my project but thought I'd share for anybody else that's looking).

Basically, as I understand it, dojo adds a custom wrapper to openlayers map which allows you to add Dojo GFX Shapes and Widgets - which includes Pie Charts!

See a good demo here: http://acuriousanimal.com/2012/01/23/dojo-openlayers-new-challenges

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