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MathGroup Archive 2005

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a very simple graphics problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61050] a very simple graphics problem
  • From: Francisco Gutierrez <fgutiers2002 at yahoo.com>
  • Date: Sat, 8 Oct 2005 02:49:48 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Dear Friends:
This is a quite primitive problem (actually, 2 related problems).
I have a set of points, which I want to put into a triangle and then draw some lines.
The triangle I build in the following way=

triangulo=Line[{{0,0},{0.5,0.5},{1,0},{0,0}}];

The I christen my set of points:

milista={{0.589286,0.330357},{0.553571,0.4375},{0.552632,0.429825},{0.508772,0.0526316},{0.578947,0.342105},{0.57,0.26},{0.57,0.29},{0.48,0.25}}

I make a graphic:

miejemplito=ListPlot[milista, PlotStyle®{PointSize[0.03]} ]

Then I put them into the triangle:

Show[Graphics[triangulo], miejemplito, PlotRange®All]

All this works fine.  I start to draw the lines:

jo1=Line[{{0.5,0},{0.5,0.5}}];

jo2=Line[{{0.4,0.4},{0.8,0}}];

jo3=Line[{{0.4,0.4},{0.8,0}}];

jo4=Line[{{0.1,0.1},{0.2,0}}];

and then

Show[Graphics[triangulo],Graphics[jo1],Graphics[jo2],Graphics[jo3], Graphics[jo4], miejemplito, PlotRange®All]

So far, so good. However, when I add

jo5=Line[{{0.8,0},{0.9,01}}];

and then give the directive

Show[Graphics[triangulo],Graphics[jo1],Graphics[jo2],Graphics[jo3], Graphics[jo4],Graphics[jo5], miejemplito, PlotRange®All], I get an extremely awkward and badly drawn graphic, and the last line (jo5) escapes the triangle.  

 

a.  How can I correct the problem?

b.  How can I put labels to each point (and eventually colour them differently)?

 

Thanks in advance

Fg


		


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