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MathGroup Archive 2001

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Re: ScatterPlot3D/Plot3D

  • To: mathgroup at smc.vnet.net
  • Subject: [mg28678] Re: [mg28669] ScatterPlot3D/Plot3D
  • From: "peter lindsay" <pl at plindsay.co.uk>
  • Date: Tue, 8 May 2001 02:51:14 -0400 (EDT)
  • References: <F42966A0479AD4118AE6009027D08CEB016BFAED@dlpcexch02.ncsc.navy.mil>
  • Sender: owner-wri-mathgroup at wolfram.com

Thanks Jerry, (and to the others who took time to think about my question) ,
but I think ListSurfacePlot only works only on regular coordinate spacing?
Correct me if I'm wrong.

My Mathematica code looks like this:

In[1]:=
SetDirectory["c:\Documents and Settings\P. Lindsay\DESKTOP\alanr"];
In[2]:=
t=Table[ReadList["cpp_smlX.txt",Number,RecordLists -> True]];

In[3]:=
ScatterPlot3D[t,BoxRatios->{10,10,10},Axes->True,
  AxesLabel->{"fair","num","ratio"},ViewPoint->{3.0,2.5,0.3}]



and works but is incredibly slow ( pc 450Mz 190Mb ram, Mathematica 3 ). My Mac Cube
( 300 Mb ram, Mathematica 4 ) wont even look at the problem - just hangs up. Any
thoughts about why?. Tried fiddling with kernel memory allocation. The
competition ( vs 6 ) works easily ( pointplot3D ) on either platform but not
yet for surface plot.

Can I get a surface plot of the data in "cpp_smlX.txt" - remembering that
the data is non-linear spacing ?

Thanks for your thoughts,



Peter Lindsay





----- Original Message -----
From: "Blimbaum Jerry DLPC" <BlimbaumJE at ncsc.navy.mil>
To: mathgroup at smc.vnet.net
Subject: [mg28678] RE: [mg28669] ScatterPlot3D/Plot3D


> You might want to use ListSurfacePlot3D...it plots a matrix of
> points in 3D as a surface...
>
> jerry blimbaum  NSWC  Panama City, Fl
>
> -----Original Message-----
> From: peter lindsay [mailto:pl at plindsay.co.uk]
To: mathgroup at smc.vnet.net
> Sent: Sunday, May 06, 2001 12:12 AM
> To: mathgroup at smc.vnet.net
> Subject: [mg28678] [mg28669] ScatterPlot3D/Plot3D
>
>
> Hi,
>
> simple one this probably:
>
> I've got ~ 10,000 coordinates (x, y, z) in a text file. The coordinates
are
> not linearly spaced and I want to see how they look on a 3D plot.
>
> I'm struggling a bit with the syntax, book 4 is remarkaby unhelpful about
> scatterplot3d.
>
> Any advice appreciated,
>
> Thanks,
>
> Peter Lindsay
>
>



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