*To*: mathgroup@smc.vnet.net*Subject*: [mg11050] Re: Active Plots*From*: Larry Linik <Larry.C.Linik@tek.COM>*Date*: Wed, 18 Feb 1998 20:31:52 -0500*Organization*: Tektronix, Inc., Beaverton, OR USA*References*: <6cbeam$8dk$1@dragonfly.wolfram.com>

I was not aware of the trick of holding down the ctrl key to get the coordinates from the plot. This is enough to get me what I need from the plot. My original desire was for a cursor that followed the curve on the plot so that you could retrieve actual coordinates of the curve without being required to "eyball it". (Is it possible to get Mathematica to do this?) I have also had another idea since my first post that extends this concept further. For parametric plots, would it be possible to get the cursor to read both the coordinates of the curve and the value of the parameter associated with those coordinates? Not being a programmer it is not apparent to me wether this kind of feature is even possible or feasable or does it already exist. It sure would be useful. Thanks for all the help. It's greatly appreciated. Larry