Hi Greg, You might be able to do this as follows. Construct a FlatField with MathType: (whatever -> (x, y, s)) and display with ScalarMaps x -> XAxis, y -> YAxis, s -> SelectRange, etc. Then the x and y values will be plotted, but the selection will be based on the s values, which are not plotted. Or have I misunderstood your question? Good luck, Bill On Tue, 19 Jul 2005, Hanowski, Gregory J wrote: > I have a need for a widget similar to a SelectRangeWidget. A > SelectRangeWidget will quickly redraw data points that fall within the > min and max range as you drag the slider bar. I need to do something > similar. I need the data points to be plotted according to their values > but as I drag the slider bar, to be hid or re-drawn based on data other > than the values being plotted. Has anybody done something like that and > have an example to share? I would be very grateful!