I have used the legend.position chart option before successfully (on MSBar type chart).
However, it does not seem to work for chart type "PolarArea".
Please can you confirm if this is working / if I need to add some more parameters?
My code is:
select 'dbr.chart', 'PolarArea', '', 900,450;
select 'dbr.chart.options', 'legend.position', 'bottom';