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

*To*: mathgroup at smc.vnet.net*Subject*: [mg103697] Re: [mg103642] Re: Mouse-Over or Mouse-Click Values of Coordinates in*From*: Gregory Lypny <gregory.lypny at videotron.ca>*Date*: Sat, 3 Oct 2009 09:00:36 -0400 (EDT)*References*: <20091002073041.0JI24.175128.imail@eastrmwml41>

Thank you, Bob and Nasser. Bob, if I understand correctly, the three arguments of Text that you use in Epilog are expression, coordinates, and offset: expression (pt, which is the figures of the coordinates to be displayed), coordinates (pt again to center the figures at the point), and offset (1.25 Sign [a] {1, 1}, to make it look good). Text[pt, pt, 1.25 Sign[a] {1, 1}]}] G. On Fri, Oct 2, 2009, at 7:30 AM, Bob Hanlon wrote: > > 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 > >