Ang. [MI-L] SHP Conversion & Missing PRJ File

[Mats Elfström]

Hi Frank!

I do not know of any third-party tool to create a prj file except perhaps 
FME?
As you have rightly observed, the shp format does not include any 
coordinate system information.
The prj file came as a later addition when ESRI discovered that people 
were using the shp format to transfer geographic information.

The only way I know to make a prj file is a bit complicated. You need to 
use ArcCatalog and define the shape property of the file.
It's of course necessary that you 1/ know which system is used, and 2/ 
that system exists in the pre-defined list. (you can probably add your own 
definitions but that's another cup altogether).
Last time I checked, though I found that MapInfo does not use prj files 
even if it's there.

I would be interested to know from you people on the list, what GISes you 
know of that uses ESRI prj files?
Not counting of course any ESRI or affiliated software.

Hälsning / Best regards Mats.E
________________________
FB Engineering AB
Södra Förstadsgatan 26
211 43 Malmö

Tel: 040-660 25 50
Mobil: 0705-27 60 27
Fax: 040-660 25 99
mats.elfstrom at fbe.se
www.fbe.se



"Frank Aaron (TX/EUS)" <frank.aaron at ericsson.com> 
Sänt av: mapinfo-l-bounces at lists.directionsmag.com
2005-12-20 19:19

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[MI-L] SHP Conversion & Missing PRJ File






Hi All,

I have downloaded a ArcGIS SHP file and noticed that it did not come with 
the required PRJ file - searched the site and could not find any reference 
to the projection or datum. I am not very knowledgeable about ArcGIS (and 
for that matter do not have access to a copy of the Program) but had read 
through the posting that the shapefiles do not contain any coordinate 
system or datum information. With that in mind - does anyone know how one 
should create the proper Projection File for the SHP File? BR,

Frank Aaron, MSc. Physics, MSEE
Staff Wireless Systems Engineer, RF Engineering Services
Ericsson USA
Global Services North America
Tel:      (972) 583-0112
Fax:     (972) 583-2273
Mobile: (972) 679-9291
mail to: frank.aaron at ericsson.com

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