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Re: Points on a ContourPlot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91743] Re: Points on a ContourPlot
  • From: Albert Retey <awnl at gmx-topmail.de>
  • Date: Sun, 7 Sep 2008 05:34:23 -0400 (EDT)
  • References: <g9t6o4$j9v$1@smc.vnet.net>

SeekUp wrote:
> I am trying to add Points to my ContourPlot to highlight certain points. The 
> code below doesn't work. Any clues how to do it?
> 

> Show[
> 
> 
> Graphics[ContourPlot[StabilityFnlens[f1, f2], {f1, -10, 30}, {f2, -10, 
> 30},(*ContourStyle->None,*)ContourLabels -> Automatic, PlotPoints -> 100, 
> Contours -> 5, PlotRange -> {-1, 1},Frame -> True,FrameStyle -> 
> Directive[Thick],LabelStyle -> {18, FontFamily -> "Arial"}],
> 
> Graphics[{Red, PointSize[Large], Point[{{5, 5}, {9, 9}, {10, 10}, {20, 
> 20}, }]}] (* doesn't work *)
> ]
> ]
> 
> 
> 

too many Graphics, this works:

Show[
 ContourPlot[Exp[f1*f2], {f1, -10, 30}, {f2, -10, 30},
  PlotPoints -> 10, Contours -> 5, PlotRange -> {-1, 1},
  Frame -> True, FrameStyle -> Directive[Thick],
  LabelStyle -> {18, FontFamily -> "Arial"}],

 Graphics[{Red, PointSize[Large],
   Point[{{5, 5}, {9, 9}, {10, 10}, {20, 20}}]}]
]

hth,

albert


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