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Re: more plotting peculiarities

  • To: mathgroup at smc.vnet.net
  • Subject: [mg124109] Re: [mg124075] more plotting peculiarities
  • From: Richard Fateman <fateman at eecs.berkeley.edu>
  • Date: Mon, 9 Jan 2012 03:18:32 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201201080922.EAA01272@smc.vnet.net> <4F09EDC6.8020206@math.umass.edu>

On 1/8/2012 11:25 AM, Murray Eisenberg wrote:
> Those results are wholly unsurprising (Version 8). After all, look at 
> some sampled values in the domains, e.g.:
>
>   Z = (1.0 + 2.0^-47 Range[-5, 5, .1] // NumberForm[#, 15] & )
>   1.02 + 2.0^-47 Range[-5, 5, .1] // NumberForm[#, 15] &
>
> And then take Cos of each list.
>
> Actually, the plot from the first expression does NOT look empty to 
> me: I see a thickened horizontal axis located at height y = 0.54. 
> Using option AxesOrigin -> {0,0} reveals what appears to be a line at 
> that height.
>
Using PlotRange->Full   or PlotRange->Automatic  should show that line 
better. But doesn't.


ListPlot[Z, PlotRange -> {0.9999999999999, 1.0000000000001}]  works however.


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