Re: [Nplot-devel] Select points

[Tzeng, N. H. <Nig...@jh...>]

Michael,
=20
I don't know if I'm doing it the right way but I created a new =
interaction that handled the mouse up event and called a passed in =
callback.  I pass back the x,y location of the click (like in the =
tooltip) and also the x,y values 3 pixels up and left and 3 pixels down =
and right to have a range to check.  My markers are 6 pixels in size so =
I think that should be good enough.
=20
Given I have some 100,000 points in my plots I hope someone has a more =
elegant way than doing a search.  I briefly thought of making the =
markers some kind of button or component to handle mouse events but =
quickly rejected that thought given the number of points I have.
=20
I can send a code snippet later when I'm on my dev box.
=20
Nigel

________________________________

From: npl...@li... on behalf of Michael =
Banzon
Sent: Tue 3/27/2007 3:45 AM
To: npl...@li...
Subject: [Nplot-devel] Select points



Hi,

I'm currently developing an application, using NPlot. I have a graph
containing 3 PointPlot's, and need the capture event where a point has
been clicked.

The best scenario would be to get the exact coordinates of the point
that was clicked. The second best would be to get the coordinates of
the click.

Does anyone have any input on how to solve this problem??

Thanks in advance...

--
Michael Banzon
Developer
Mobile: +45 3124 2455
Mail: mi...@ab...
Web: http://www.abc-tool.com/

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Denmark

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