Re: Re: Mouse-Over or Mouse-Click Values of Coordinates

*To*: mathgroup at smc.vnet.net*Subject*: [mg103695] Re: [mg103642] Re: Mouse-Over or Mouse-Click Values of Coordinates*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Fri, 2 Oct 2009 08:31:40 -0400 (EDT)*Reply-to*: hanlonr at cox.net

Manipulate[ b = Round[a, .001]; pt = {b, Round[Sin[b], .001]}; Plot[Sin[x], {x, -Pi, Pi}, Epilog -> {Red, PointSize[Medium], Point[pt], Black, Text[pt, pt, 1.25 Sign[a] {1, 1}]}], {a, -Pi, Pi, Pi/100, Appearance -> "Labeled"}] Bob Hanlon ---- Nasser Abbasi <nma at 12000.org> wrote: ============= "Gregory Lypny" <gregory.lypny at videotron.ca> wrote in message news:h9srm3$p3g$1 at smc.vnet.net... > Hello everyone, > > Is there a way to include in Manipulate something like a tooltip, > where the coordinates of a point in a plot appear where the user clicks. > > Regards, > > Gregory > I know how to do it with discrete data. Here is an example data = Table[Tooltip[Sin[x]], {x, -Pi, Pi, Pi/100.}]; ListPlot[data, Joined -> True] And now if you move the mouse over the plot, the y-value (i.e. sin(x) ) value will be displayed, here is a screen shot http://12000.org/tmp/093009/tooltip.PNG But with the direct plot command, I still can't figure it Plot[Tooltip[Sin[x]], {x, -Pi, Pi}] will display "Sin[x]", instead of the current value of it. As shown here: http://12000.org/tmp/093009/tooltip2.PNG I tried using Dynamics and Annotation with Mousover to get it to work, but no luck. I am sure some Mathematica expert here will have an answer on how to do it with a direct plot command instead of discrete plot. --Nasser __________ Information from ESET NOD32 Antivirus, version of virus signature database 4470 (20090930) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com