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Re: constructing a continuous region from 2D data using

  • To: mathgroup at smc.vnet.net
  • Subject: [mg131400] Re: constructing a continuous region from 2D data using
  • From: Bob Hanlon <hanlonr357 at gmail.com>
  • Date: Thu, 18 Jul 2013 03:02:47 -0400 (EDT)
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  • References: <20130717054903.D828E69BD@smc.vnet.net>

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Needs["ComputationalGeometry`"]


ch = ConvexHull[data];


Graphics[{
  LightBlue, Polygon[data[[ch]]],
  Red, AbsolutePointSize[3], Point[data]},
 AspectRatio -> 1/GoldenRatio, Frame -> True]


ListLinePlot[data[[Append[ch, ch[[1]]]]],
 PlotStyle -> Directive[Blue, Thick],
 Frame -> True, Axes -> False,
 Epilog -> {Red, AbsolutePointSize[3], Point[data]}]



Bob Hanlon


On Wed, Jul 17, 2013 at 1:49 AM, <ommair at uok.edu.pk> wrote:

> As shown in an image there are many data points in a region and these
> points are in the form of {{x1,y1},{x2,y2},{x3,y3},{x4,y4}......} and
> assume z=0 for all data. I want to construct a whole continuous region from
> these points i.e wants to cover the area between points with proper
> boundary of the region. Like for example we can draw a curve from data
> points using interpolation cant we construct a continuous region or plane
> from data points in my image. Or suggest me any other method from which I
> can get continuous region from my data.
>
> data= {{0.939922, 0.0109069}, {0.941922, 0.0109069}, {0.943922,
> 0.0109069}, {0.945922, 0.0109069}, {0.947922, 0.0109069}, {0.949922,
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> {0.969955, 0.0405944}, {0.971955, 0.0405944}, {0.973955, 0.0405944},
> {0.975955, 0.0405944}, {0.942928, 0.0501072}, {0.944928, 0.0501072},
> {0.946928, 0.0501072}, {0.948928, 0.0501072}, {0.950928, 0.0501072},
> {0.952928, 0.0501072}, {0.954928, 0.0501072}, {0.956928, 0.0501072},
> {0.958928, 0.0501072}, {0.960928, 0.0501072}, {0.962928, 0.0501072},
> {0.964928, 0.0501072}, {0.966928, 0
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> {0.96863=
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> 0.0001=
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> 0.0001=
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> {0=
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> {0.94764=
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> 0.0=
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> {0.=
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> {0.960646=
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> 0.0050858}=
> , {0.967646, 0.0050858}, {0.968646, 0.0050858}, {0.969646, 0.0050858},
> {0.9=
> 70646, 0.0050858}, {0.971646, 0.0050858}, {0.972646, 0.0050858},
> {0.973646,=
>  0.0050858}, {0.974646, 0.0050858}, {0.975646, 0.0050858}, {0.976646,
> 0.005=
> 0858}}
>
>




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