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Re: Re: label origin on plot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57661] Re: [mg57616] Re: [mg57583] label origin on plot
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Fri, 3 Jun 2005 05:33:55 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200506020916.FAA11888@smc.vnet.net>
  • Reply-to: murray at math.umass.edu
  • Sender: owner-wri-mathgroup at wolfram.com

The method of showing part of a frame does not give felicitous results 
if, e.g, the plot of 1 - x^2 is to be done on domain from -1 to 1.

If you open just about any calculus text, e.g., to a 2D graph plot, 
you'll see axes going through the pont (0, 0) and with that point 
labelled with a single 0.  It's unfortunate that Mathematica does not 
provide an option to Plot to reproduce this well-established behavior. 
It's just plain annoying that one has to resort to the work-around of 
using an Epilog with a Text primitive.


David Park wrote:
> I'm a little surprised. With a standard Axes plot it does not seem possible
> to get the zero ticks labeled.
> 
> Plot[1 - x^2, {x, 0, 1}];
> 
> Extending the lower plot range and even explicitly labeling the ticks still
> does not work.
> 
> Plot[1 - x^2, {x, 0, 1},
>     Ticks -> {Table[{i, i}, {i, 0, 1, 0.2}], Table[{i, i}, {i, 0, 1, 0.2}]},
>     PlotRange -> {{-0.05, 1}, {-0.05, 1}}];
> 
> But using a Frame (which is generally better anyway) and extending the lower
> plot range will label the zero points.
> 
> Plot[1 - x^2, {x, 0, 1},
>     Frame -> True,
>     PlotRange -> {{-0.01, 1}, {-0.01, 1}}];
> 
> If you don't want to show the entire Frame you can use...
> 
> Plot[1 - x^2, {x, 0, 1},
>     Frame -> {True, True, False, False},
>     PlotRange -> {{-0.01, 1}, {-0.01, 1}}];
> 
> David Park
> djmp at earthlink.net
> http://home.earthlink.net/~djmp/
> 
> 
> From: ptv-list at socilogy.osu.edu [mailto:von-hippel.1 at osu.edu]
To: mathgroup at smc.vnet.net
> 
> 
> In a 2-dimensional plot, Mathematica typically does not label the
> origin. I would like X=0 to be labeled as "0." Is this possible?
> 
> 
> 
> 
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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