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MathGroup Archive 2007

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Re: Reading Coordinates from Plot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80135] Re: Reading Coordinates from Plot
  • From: rxm at inbox.com
  • Date: Mon, 13 Aug 2007 04:37:57 -0400 (EDT)
  • References: <f9mqlv$ri0$1@smc.vnet.net>

::::::::: On Aug 12, 7:24 am, jrc <jrch... at mcn.net> wrote:
:
: Apparently v6.0.1 no longer has the mouse functionality that
: enables one to easily read coordinates from a plot. <...deleted...>

I also missed the ability to read the data from plots.  Here
is a cheap way to read mouse clicks

	data = Table[RandomReal[], {10}];

	res = {};

	Dynamic[res]

	EventHandler[
	 ListPlot[data], {"MouseUp" :> AppendTo[res,
MousePosition["Graphics"]]}
	]

Enter each line in a different cell of the notebook.

Now, whenever you release the mouse button inside the plot
area the output cell of Dynamic[res] will be updated with
the position of the click.



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