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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | GISList: SUM: GPL Format |
| Date: |
07/02/2003 02:25:01 PM |
| From: |
RICK GRAY |
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Original Q: I have been told I will be receiving a number of files in GPL =
format. These are GPS coordinates of field boundaries. I do not know what =
GPS unit was used to collect the data, but I do know the company uses Farm =
Works as their GIS software. I need to create shapefiles from them, but I h=
ave never heard of this format before. Any suggestions on what I will be up=
against?
Answer: GPL is apparently Delorme Mapping's private format. To use the file=
s in ArcView meant opening them in Excel, stripping off header and footer i=
nfo, putting in column headings (X,Y) and deleting a number of columns, sav=
ing as text and opening in AV3.2 as an event theme. Some files had multipl=
e polygons (separate farm fileds) which had to be each saved in a separate =
text file. Then I used XTools to convert the points to polygons. Rather ted=
ious.=20
I had generous offers from list members to convert the files to shapefiles =
using Manifold or Farm Works Site Mate (thanks - I may take you up on that =
yet) but so far I have only received a few "test files" and am waiting to s=
ee what the whole lot will be like. I have requested that the sender conver=
t the rest to shapefiles before sending but I'm not holding my breath.
The GPL format is a fairly simple ascii text format - just not friendly to =
ArcView.
Thanks for all your help - this list continues to amaze me.
Rick Gray
GIS Specialist, Ontario Weather Network
http://www.ownweb.ca
Ridgetown College, University of Guelph
http://www.ridgetowncollege.com/
Tel. 519-674-1554
E-mail: rgray@ridgetownc.uoguelph.ca
Ridgetown: -81.883 W, 42.450 N
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