Re: Plotting global shapefiles - Small area, big file size

Hi Thierry,

I'm not sure why the "pdf" workstation produces such large plots.
However, you might want to use the "newpdf" workstation; I tried it on
the natural_earth shapefiles, and the resulting PDF was only 20K (and
I too got a 4MB file when using "pdf").

I hope that helps.
Rick

On Mon, 31 Jan 2011 16:16:33 +0100
  Thierry Corti <tcorti@env.ethz.ch> wrote:
> Hi there,
>
>
>
> When using a global shapefile to plot rivers, lakes and country
>borders for
> a small area (such as Switzerland), the resulting PDF gets huge (4.2
>MB),
> even though the information content is small. Even Adobe Acrobat can
>reduce
> the size to 24 KB without affecting the quality (see attached PDF).
>
>
>
> My guess is that the file become so big because the script (see
>attachment)
> plots all lines and polygon, regardless of the position in or out of
>the
> plotting area.
>
>
>
> How can I improve on this? How can I plot just the lines and
>polygons I need
> and leave everything outside the intended area away? I see three
>angles to
> attack this one from:
>
>
>
> 1. Is “gc_inout” the right function for this? It seems a rather
>crude way
> of doing it.
>
> 2. Is there a way to configure the plotting resources to produce a
> smaller file size?
>
> 3. Is there a way to replace the internal NCL database for
>MapPlot?
>
>
>
> Is one of these three solutions a winner? Or am I looking at three
>red
> herrings?
>
>
>
> Thank you for your help.
>
>
>
> Cheers,
>
> Thierry
>
>
>
>
> ------------------------------------------------------------
>
> ETH Zurich
>
> Thierry Corti
>
> Center for Climate Systems Modeling (C2SM)
>
> CHN M 15.1
>
> Universitaetstrasse 16
>
> 8092 Zurich, Switzerland
>
>
>
> thierry.corti@env.ethz.ch
>
> www.c2sm.ethz.ch/people/tcorti
><http://www.iac.ethz.ch/people/thcorti/>
>
>
>
> +41 44 633 91 04 phone
>
> +41 44 633 10 58 fax

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Received on Mon Jan 31 10:04:43 2011