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MathGroup Archive 2000

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Re: Plotting A verticle line?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg21607] Re: [mg21593] Plotting A verticle line?
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sun, 16 Jan 2000 22:43:53 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

>Well, after reading some of the posts in this group, this is probably
>going to seem like trivial question, but it's really bugging me:
>How do you get Mathematica to plot a straight verticle line?
>


Thomas,

This would be one way:

Show[Graphics[Line[{{3, -5}, {3, 5}}]],
  PlotRange -> {{-0.001, 6}, {-5.001, 5}}, Axes -> True];

Or you could add the line to another plot this way:

Plot[x^2/6, {x, 0, 6}, Epilog -> {Line[{{3, 0}, {3, 6}}]}];

Or you could use the package ImplicitPlot:

ImplicitPlot[x == 3, {x, 1, 4}, {y, -5, 5},
    PlotRange -> {{-0.001, 6}, {-5.001, 5}, Automatic}];

ImplicitPlot seems to be a little tricky. You have to use the form where both the x
and y range is given, and then if you want to get a nice PlotRange you have to use
three arguments in PlotRange because this is really a contour plot which requires the
third argument.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/



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