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MathGroup Archive 2004

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Re: User-defined or filled symbols for Points in ListPlots and Epilogs?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg49334] Re: User-defined or filled symbols for Points in ListPlots and Epilogs?
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 15 Jul 2004 06:59:56 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <cd3634$qdk$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

what is with

Block[{Point},
  Point[pnts_] := Text["\[FilledCircle]", pnts];
  ListPlot[data]
  ] 


or

ListPlot[data, DisplayFunction -> Identity] /. 
    Point[pnt_] :> Text["\[FilledCircle]", pnt] // 
  Show[#, DisplayFunction -> $DisplayFunction] &

Regards
  Jens

AES/newspost wrote:
> 
> Are there any simple or easy ways to substitute a user-defined symbol,
> especially a "filled" symbol, for the Points in a ListPlot or Epilog?
> 
> The data I want to plot is already created in lengthy lists of the form
> 
>      pointData  =  { {x1,y1}, {x2,y2}, . . . . . }
> 
> which I can plot directly by using ListPlot or by putting
> Map[Point, pointData]  into an Epilog.  I suppose I could create filled
> circles to replace the Points in this Epilog, for example, by using
> something like
> 
>      Epilog->{White, Map[Disk, convertedPointData],
>                                        Map[Circle, convertedPointData]}
> 
> so that the filled opaque circles would overlay and hide the theoretical
> data lines that pass underneath them.  Trying to convert my  pointData
> lists into the necessary form so that I can do this has proven to be a
> frustrating exercise, however.
> 
> So, is there a way to do this list conversion so that Disk and Circle
> will Map onto the resulting list? -- or, a way to redefine the point
> symbol in Point to be something more complex?
> 
> (Having gotten used to the joys of Stroke and Fill in Illustrator, I'm
> frustrated that Mathematica doesn't seem to offer -- or I haven't been
> able to find -- similar graphical constructs.)


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