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Re: How show Locator point and its image under a function?

• To: mathgroup at smc.vnet.net
• Subject: [mg79922] Re: How show Locator point and its image under a function?
• From: chuck009 <dmilioto at comcast.com>
• Date: Thu, 9 Aug 2007 05:11:07 -0400 (EDT)

Hello Murray,

How about this:

f[{x_, y_}] := {2 x + 1, y + 2};
DynamicModule[{pt1 = {1, 1}}, {LocatorPane[Dynamic[pt1], 
   Framed@Graphics[{}, PlotRange -> {{0, 5}, {0, 5}}, Axes -> True]], 
  Framed@Graphics[{}, PlotRange -> {{0, 5}, {0, 5}}, Axes -> True, 
    Epilog -> {PointSize[Medium], Dynamic@Point[f[pt1]]}]}]