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MathGroup Archive 2005

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Re: Problems with eps format

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56700] Re: [mg56673] Problems with eps format
  • From: Chris Chiasson <chris.chiasson at gmail.com>
  • Date: Wed, 4 May 2005 00:33:19 -0400 (EDT)
  • References: <200505020532.BAA00325@smc.vnet.net> <200505030926.FAA25654@smc.vnet.net>
  • Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

Why import a tif into Mathematica and then export it as an eps? Tif is
a raster format, eps is a ~ vector format. It probably would take a
long time to convert an array of color values into some sort of vector graphics.
What is the native resolution of your tiffs? If they are moderate in
size, that would explain the slow performance of the graphics array
and associated statements.

On 5/3/05, Ted Sariyski <tsariysk at craft-tech.com> wrote:
> Hi,
> I have problems with eps format in Mathematica 5.1.
> 
> If I try to import a file generated from Octave I get "Invalid file
> format". The format of the file is  "PostScript document text conforming
> at level 3.0 - type EPS". If I import a tif file to Mathematica, export
> it in eps and reimport it back it works but very slow. The format of the
> eps generated from Mathematica is "PostScript document text conforming
> at level 2.0 - type EPS". What I'm doing wrong here?
> 
> Another question I have concerns the dumb script below.
> 
> g11 = Import["c_s_a.tif"];
> g12 = Import["c_s_b.tif"];
> ...
> g43 = Import["a_l_a.tif"];
> g = GraphicsArray[{{g11, g12, g13}, {g21, g22, g23}, {g31, g32, g33},
> {g41, g42, g43}}];
> Show[g, {ImageSize -> {600, 420}, AspectRatio -> Automatic}];
> Export["array.tif", g];
> 
> Q1. Export["array.tif", g] takes ~ 20 sec. If I change it to
> Export["array.eps", g] it takes ~3 min.
> Q2. The same script executed from a notebook freezes.
> Q3. How to write the script so that to be able to provide the file names
> as arguments?
> 
> Thanks in advance,
> Ted
> 
> 


-- 
Chris Chiasson
http://chrischiasson.com/
1 (810) 265-3161


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