Is it possible to define point-by-point attributes for symbols such that a mouse listener would fire only on specific chart points?
The motivation for my question is as follows:
Say you had a plot (I'm think of a magnitude verse frequency) where for all but one point (e.g. the corner frequency of a low-pass filter) you want a line style with no user ability to select points, but for the single-point (again the 3-dB corner frequency of a filter), you want the user to be allowed to move the point. I refer to this as a "handle".
The only way I see to accomplish this so far is to plot one dataset with two plots; one plot a line graph, the second a single point with a mouse listener that, when called, would manipulate both plots.
I think I know what you want, though I am confused by your use of the phrase "line style". You want one, and only one point of a line plot to be selectable. There is no option for that. Using a line plot defining the curve, combined with a scatter plot of one point positioned at the corner frequency, is you best option.
Line "Handle(s)" as a definable CharAttribute
Posted - 28 Aug 2009 : 15:00:21
