Re: How show Locator point and its image under a function?
- To: mathgroup at smc.vnet.net
- Subject: [mg79894] Re: [mg79866] How show Locator point and its image under a function?
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Wed, 8 Aug 2007 04:50:33 -0400 (EDT)
- Organization: Mathematics & Statistics, Univ. of Mass./Amherst
- References: <200708070532.BAA12064@smc.vnet.net>
- Reply-to: murray at math.umass.edu
I oversimplified my requirements... Actually, I want to do more: I want to include a LocatorAutoCreate->All option for the left-hand graphics portion so that as each point there is clicked it remains there and its image in the right-hand graphics is automatically shown an remains showing even as I click new points on the left. Murray Eisenberg wrote: > The following code displays a fixed point and its image under a > specified function f: > > f[{x_,y_}]:={2x+1,y+2} > Module[{pt = {-1, 0.5}}, > Row[{ > Framed@Graphics[Point[pt], PlotRange -> 5], > Framed@Graphics[Point[f[pt]], PlotRange -> 5] > }] > ] > > Now I want to have the point in the left-hand graphic to be dynamic, > controlled by a Locator, and to have its changed image under the > function to be shown in the right-hand graphic. > > The idea is something like the following (WRONG!) code: > > DynamicModule[{pts={{0,0}}}, > Row[{ > LocatorPane[Dynamic[pts],Graphics[{},PlotRange->5]], > Graphics[Dynamic[f/@pts],PlotRange->5] > }] > ] > > That code produces error messages, "1 is not a Graphics primitive or > directive", "2 is not a Graphics primitive or directive". > > How can it actually be done? > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305
- References:
- How show Locator point and its image under a function?
- From: Murray Eisenberg <murray@math.umass.edu>
- How show Locator point and its image under a function?