Dear all,
Does anybody know about a possibility to import Arc/INFO vector files written
in EXPORT format into GRASS? Alternatively, are any documentations about the
ARC/INFO EXPORT format available?
Thanks in advance
--
Dr. Ralf Kunkel Tel: ++49-2461-613262
Forschungszentrum Juelich GmbH Fax: ++49-2461-612540
Programmgruppe Systemforschung und EMail: r.kunkel@kfa-juelich.de
Technologische Entwicklung (STE)
D-52425 Juelich, Germany
Arc/INFO's EXPORT format is a proprietory format, and ESRI has not made,
nor plans to make, this format public _to_the_best_of_my_knowledge_. They
consider the UNGENERATE format to be their "open" format. Therefor, it
doesn't seem likely that there will be an input translator for EXPORT
format data written anytime in the near future.
--
Malcolm D. Williamson - GIS Specialist E-mail: malcolm@cast.uark.edu
Center for Advanced Spatial Technologies Telephone: (501) 575-6159
Ozark Rm. 12 Fax: (501) 575-5218
University of Arkansas
Fayetteville, AR 72701
On Fri, 22 Sep 1995, R.Kunkel
wrote:
Dear all,
Does anybody know about a possibility to import Arc/INFO vector files written
in EXPORT format into GRASS? Alternatively, are any documentations about the
ARC/INFO EXPORT format available?Thanks in advance
--
Dr. Ralf Kunkel Tel: ++49-2461-613262
Forschungszentrum Juelich GmbH Fax: ++49-2461-612540
Programmgruppe Systemforschung und EMail: r.kunkel@kfa-juelich.de
Technologische Entwicklung (STE)
D-52425 Juelich, Germany
On Fri, 22 Sep 1995, R.Kunkel wrote:
This seems to come up quite often, so I'm replying to the list. Sorry if
it's boring.
Does anybody know about a possibility to import Arc/INFO vector files written
in EXPORT format into GRASS? Alternatively, are any documentations about the
ARC/INFO EXPORT format available?
So far as I know (and that's not all that much!) GRASS will not read the
ARC/INFO export format (which are files with .e00 endings) directly.
However, GRASS will read ARC/INFO ungenerate format vector files, and
rebuild the topology of the vector coverage. When someone gave me e00
files which I needed to get into GRASS, I borrowed an ARC account and
did the following:
In ARC:
1) imported the e00 files, recreating the cover (command is someting
like "import cover <name of e00 file> <cover name>")
2) did "ungenerate line <cover name> <file for lines>"
3) did "ungenerate label <cover name> <file for labels>"
4) went to INFO and exported <cover name>.PAT as an sdf file making
sure that it contained the label point id's, and any attributes
that I wanted in grass.
5) changed all the commas in the sdf file to spaces, which is what
grass expects!
This produces three ascii files which contain pretty much all the
information in the ARC coverage. These three files have to be put
somewhere special ($location/arc I think - but read the man page
for v.in.arc ...)
In Grass:
1) run v.in.arc giving the lines file, label points files and text
files produced above, and telling it what columns in the exported
.PAT files are label point ID's etc.
2) run v.support
3) if there aren't any errors, it's probably worked. Try d.vect and
v.to.rast to be sure.
David Wheatley
Department of Archaeology,
University of Southampton,
Highfield, Southampton, S017 1BJ