Unfinished work. Alfa state.
This page first of all produces a simple barchart using conventional R body content ie with
Plugin disabled
Plugin r cannot be executed.
Using Ajax services
http://localhost/tiki-ajax_services.php?controller=tracker&action=export_items&trackerId=2&encoding=UTF-8&separator=%2C&delimitorL=%22&delimitorR=%22&CR=%25%25%25&listfields[]=9&listfields[]=10&recordsMax=-1
Using TrackerList
Missing or incorrect trackerId parameter for the plugin.
The numbers 8,4,7 are then generated from a tracker using a simple wiki template and a trackerlist substituted into the body content as follows
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Plugin r cannot be executed.
In the above the echodebug now shows the body content both pre and post parsing so that it can be checked.
So now that you can generate output from a tracker using a trackerlist plugin, or for more flexibility using the list plugin, then a lot more options become possible with R :-)