Geographical mapping software

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Dear collegues,

I am seeking for a graphical program which allows to plot and print 
worldwide geographical data (Latitude/Longitude, and an 
associated numerical value) on a Macintosh. The program should be 
capable of various projection types, an should run on one of the 
newer PowerPC Macs (Model 8500 or newer). It should have an 
ascii-type of interface for easy data exchange and entry.

Can anyone recommend me a program package, that is not too much 
expensive ? Is there eventually public software available, which 
can be downloaded from the web or from an ftp site ?

Any comment would be welcome. Thanks a lot.


Michael Knappertsbusch
Geology Department
Natural History Museum Basel
Augustinergasse 2
4001 Basel, Switzerland

Tel. No.: +41-61-266 55 64
Fax No.: +41-61-266 55 46
Email: Knappertsbus@ubaclu.unibas.ch