I would just say that I recently installed and used the chart extension for pie 
charts and found it worked well whatever the age of the code. I got the 
extenson from
http://sourceforge.net/projects/geoserver/files/GeoServer/2.15.0/extensions/geoserver-2.15.0-charts-plugin.zip
 but obviously you would need to get for your version of geoserver.

From: Peter Smythe <[email protected]>
Sent: Friday, 3 April 2020 03:39
To: GeoServer Mailing List List <[email protected]>
Subject: [Geoserver-users] Chart extension

Hi all

I am looking for a GeoServer symbolizer to produce scaled pie charts.

When I search for Geoserver chart, the first result I get is 
https://geoserver.geo-solutions.it/edu/en/pretty_maps/charting.html  It refers 
to Eastwood Charts, which appears to be a project last touched 12 years ago.  
Is this the code used by the official extension: Chart 
Symbolizer<http://sourceforge.net/projects/geoserver/files/GeoServer/2.16.2/extensions/geoserver-2.16.2-charts-plugin.zip>
 or is it now included inside GeoServer? Is this extension actively maintained?

Is this the preferred charting solution?  I see it referenced in a number of SO 
answers.

The other thing that confuses me is that while this extension appears in 
http://geoserver.org/release/stable/ , it is not listed at 
https://docs.geoserver.org/stable/en/user/extensions/index.html but that list 
says that it is not exhaustive.

Andrea/GeoSolutions, would it be acceptable to add a link to the extensions 
page above linking to your website, or would it be better to copy that 
charting.html page into the GeoServer documentation? If so, I could do it with 
your permission.

Thank you

Peter
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