On Wed, 2007-08-15 at 09:51 +0200, Stefan Zweig wrote:
hi list,
i have a problem with the shp2pgsql program:
this command:
/usr/local/pgsql/bin/shp2pgsql -s 4326 -c -I -D -k
/var/gisapp/postgreexport/_G342.shp public._g342 >
/var/gisapp/postgreexport/_g342.sql
works alright, no problems at all
whereas this command:
/usr/local/pgsql/bin/shp2pgsql -s 4326 -c -I -D -k
/var/gisapp/postgreexport/_G2681.shp public._g2681 >
/var/gisapp/postgreexport/_g2681.sql
causes shp2pgsql to answer:
"/var/gisapp/postgreexport/_G2681.shp: shape (.shp) or index files (.shx) can not be
opened."
ls -la in /var/gisapp/postgreexport/ says the following:
-rwxrwxrwx 1 root root 171848556 2007-08-14 18:38 _G2681.dbf
-rwxrwxrwx 1 root root 143 2007-08-14 18:38 _G2681.prj
-rwxrwxrwx 1 root root 4565523268 2007-08-14 18:38 _G2681.shp
-rwxrwxrwx 1 root root 124980820 2007-08-14 18:38 _G2681.shx
-rwxrwxrwx 1 root root 308 2007-08-15 09:35 _G342.dbf
-rwxrwxrwx 1 root root 143 2007-08-15 09:35 _G342.prj
-rwxrwxrwx 1 root root 716 2007-08-15 09:35 _G342.shp
-rwxrwxrwx 1 root root 276 2007-08-15 09:35 _G342.shx
so the only difference between shp-file _g2681 and shp-file _g342 is that
_g2681 is an extremely big one. (and actually there is another difference:
_G342.shp is a point shape, _g2681.shp is a line shape)
any ideas?
This is just a shot in the dark, I've never used a shapefile that large,
but I've always been under the impression that there's a 4GB file size
limit on shapefiles. The header in the shapefile only has 4 bytes for
file size, in 2 byte words, which, if you're using a signed int, is 4GB.
Unsigned, it's 8GB theoretically, but I think shp2pgsql reads it as a
signed int. Even if the program that created the shapefile wrote it as
an unsigned length, shp2pgsql would would read the length as negative.
Again, I don't know for certain if any of this is true, but it could be
something to look in to.
Jeff
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