Possible to update/refresh time series chart renderer?

[stillLearning]

Hello all,

Like the subject says, I'm looking to update or refresh the chart renderer. My end goal is to have a slider underneath the chart and have a shape move along the time series line along with the slider. I have created a time series chart and set a renderer to it, then added it to a plot (CombinedDomainXYPlot). I can get the chart to display and show a shape at a single data point using getItemShapeVisible, but I can't get it to change positions. I believe I need to update the renderer? It feels like I've been spinning my wheels for the last couple of days, so if it is possible, would anyone mind sharing some example code or insight on how this might be done? Also, if there is a post regarding this already then I apologize, as I have not yet been able to find it by searching.

Thanks in advance,
Andrew

[david.gilbert]

One option would be to use the Overlay mechanism on the ChartPanel. Take a look at the CrosshairOverlay class (particularly the paintOverlay() method) to see how it draws some crosshairs for a point on a series nearest to the mouse pointer location. It would not be hard to adapt this to draw some shape at the same (x, y) location.

[stillLearning]

Thanks David, I'll look into the crosshair. Also, I tried a domain value marker which would possibly follow the slider by providing a vertical line, but I could only get it to draw on creation of the chart. Essentially not updating it's position. Any idea if having a "moving" value marker is possible?