I am building a PNG chart with several line series and a single scatter
series. I add the line series first so the scatter series displays on
top. I have an action renderer to generate tooltips for the chart. It
appears as though the image map is being created such that the tooltips
for the line series take precedence over the toolips for the scatter
series. If I add the scatter series first, I can always see the scatter
tooltips, but the markers are displayed behind the lines. Is there a way
I can get the scatter series to display on top and have the image map
build such that I can always see the tooltips for the scatter series
markers?