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Re: How to remove an artifact from a plot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81960] Re: How to remove an artifact from a plot
  • From: lamoucheg at gmail.com
  • Date: Sun, 7 Oct 2007 05:42:19 -0400 (EDT)
  • References: <fe7hru$oq7$1@smc.vnet.net>

I can't explain why, but when you look at the InputForm of the
resulting graph, it shows that it has the option AxesOrigin->[0,0.2}
which gives an horizontal line and a vertical line.

You can solve this by explicitely using AxesOrigin->{-10,0.} to have
no vertical and horizontal lines.

Somebody may comment on how AxesOrigin is determined by default? In
the documentation, we only have:
"AxesOrigin->Automatic uses an internal algorithm to determine where
the axes should cross. If the point {0,0} is within, or close to, the
plotting region, then it is usually chosen as the axes origin. "

Guy Lamouche

On Sat, 6 Oct 2007 08:43:42 +0000 (UTC), john.feth at honeywell.com
wrote:

>I'm using Mathematica 6.0 and when I use the following notebook entry
>
>Test=Table[{x,(1/2)+(Cos[2*2*Pi*x]/2)*(E^-(x^2)+(1/2)*0.1*E^-
>((x-12)^2)+(1/2)*0.05*E^-((x-27)^2)+(10^-3)*E^-((x-280)^2))},
>{x,-10,40,0.05}];ListPlot[Test,PlotRange->All,Joined->True,Frame-
>>True,FrameLabel->{"Pathlength Mismatch (2\[CenterDot]m mm)"," Signal
>Strength "},BaseStyle->{FontFamily->"Garamond",FontSlant-
>>"Italic",FontSize->14}]
>
>in addtion to the plot I want, I get a horizontal line across the
>whole plot at 0.2.  This sort of artifact also appears occasionally in
>Mathematica 5.1.
>
>Does anyone know why it appears?
>
>Does anyone know how to get rid of it?
>
>Thanks very much,
>
>John Feth
>


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