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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | GISList: Reprojecting EPS-file |
| Date: |
02/21/2002 06:52:25 AM |
| From: |
Hugo Ahlenius |
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Hi all,
I am doing a minor job (as the in-house GIS expert) in support our
cartographer/graphic designer. He had now gotten a bunch of world maps as
EPS-files in geographic/Platte Carre projection that he wanted to have
re-projected to Winkel Tripel.
At my hands are basically all ESRI products (ArcGIS 8.1 etc), and Adobe
graphics s/w. It is just a small thing, so I'm not sure we want to buy
anything new, but if there are any free tools (that are easy to use), that
would be interesting. But it would also be interesting to hear about other
s/w that can do it.
I managed to do it this way:
* Open in Illustrator
* Remove all strokes (lines on the polygons)
* Remove text and legend (keep just map)
* Export to BMP in 300 dpi
* Import the BMP in ArcInfo (imagegrid) as a 3-channel stack
(this means each RGB channel is interpreted as a dataset)
* Reproject each channel Geographic/PlatteCarre>Winkel/Tripel
* Export the re-projected 3-channel stack as an RGB BMP
* Convert BMP to EPS using the program 'autotrace'
The polygon definitions between neighbouring polys are lost in the 2nd step
if they have the same color, since the dividers between them are removed. It
can be solved by just giving all the basins unique colors (which the
cartographer will need to re-correct afterwards, which he probably will
anyways).
I tried to export it as a DXF from Illustrator, but ArcMap refused to open
those. But when I got a DXF exported from Freehand, then I could open it,
register and export it!
Any comments, tips_
// Hugo Ahlenius
-------------------------------------------------------------
Hugo Ahlenius E-Mail: hugo@grida.no
Project Officer Phone: +47 3703 5713
UNEP GRID-Arendal Fax: +47 3703 5050
Service box 706, N-4808 Arendal Mobile: +47 9964 7071
Norway WWW: http://www.grida.no
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