Created
September 24, 2012 20:51
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OGR in Python with PostGIS
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from glob import glob | |
from os.path import dirname, basename, join | |
print 'psql -U username -c "TRUNCATE roads_skeletron"' | |
all_filenames = glob('tmp/*/???????-roads-z12.shp') | |
for (overall_index, filename) in enumerate(sorted(all_filenames)): | |
quad = basename(filename)[:7] | |
print 'echo', '-' * 20, overall_index, 'of', len(all_filenames), quad | |
lat = int(quad[1:3]) if quad[0] == 'n' else -int(quad[1:3]) | |
lon = int(quad[4:7]) if quad[3] == 'e' else -int(quad[4:7]) | |
filenames = glob(join(dirname(filename), 'roads-z??.json')) | |
for (index, filename) in enumerate(sorted(filenames)): | |
print 'ogr2ogr -t_srs EPSG:900913 -f PostgreSQL \\' | |
print ' -clipsrc %d %d %d %d \\' % (lon, lat, lon+5, lat+5) | |
if index == 0: | |
print ' -overwrite \\' | |
print ' -lco GEOMETRY_NAME=geometry -lco ENCODING=UTF-8 \\' | |
print ' -nlt MULTILINESTRING \\' | |
else: | |
print ' -append -update \\' | |
print ' -nlt MULTILINESTRING \\' | |
print ' -nln roads_%(quad)s \\' % locals() | |
print ' PG:"dbname=\'dbname\' user=\'username\'"', filename | |
print '' | |
print "psql -U username -c \"INSERT INTO roads_skeletron (zoomlevel, shortname, name, pixelwidth, the_geom, source) SELECT zoomlevel, shortname, name, pixelwidth, SetSRID(Multi(geometry), 900913), '%(quad)s' FROM roads_%(quad)s\"" % locals() | |
print "psql -U username -c 'DROP TABLE roads_%(quad)s'" % locals() |
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