Hi,
I need to split one big vector file (200MB Shapefile) to several
smaler tiles , so it is more usable for mapserver, and I wrote a small
script v.mktiles, which should split big vector file into several
tiles (attached):
Description:
Splits large vector map into several tiles with associated attribute table
Keywords:
vector, tiles
Usage:
v.mktiles [-c] input=name [type=string] prefix=name columns=value
rows=value [--overwrite] [--verbose] [--quiet]
Flags:
-c Make a copy for attribute table for each tile
--o Allow output files to overwrite existing files
--v Verbose module output
--q Quiet module output
Parameters:
input Name of input vector map
type Input map type
options: line,area
default: line
prefix Prefix for output vector maps
columns Resulting number of columns
default: 2
rows Resulting number of rows
default: 2
When the input file is relatively small (spearfish roads), it works fine:
GRASS> v.mktiles in=roads pref=cest columns=2 rows=2 type=line --o
but when I try to run it on file with 155754 isolines, it took an
hour, and even the first tile was not generated
so, my question: is there such script already (maybe something in
GDAL/OGR package, which I missed)? Isn't there any big mistake in my
script?
If desired, in the future the script should take output from v.mkgrid as well
Thanks
Jachym
--
Jachym Cepicky
e-mail: jachym.cepicky gmail com
URL: http://les-ejk.cz
GPG: http://www.les-ejk.cz/pgp/jachym_cepicky-gpg.pub
(attachments)
v.mktiles (3.63 KB)