OsmAnd/config/contours/V2/srtmshp2osm.py

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#!/usr/bin/python
import shapefile
import os, sys
from lxml import etree
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-f", "--file", dest="inputfilename",
help="Shapefile filename to process", metavar="FILE")
parser.add_option("-o", "--output", dest="outputfilename",
help="Output filename", metavar="FILE")
parser.add_option("-p", "--pretty",
action="store_true", dest="pretty", default=False,
help="pretty-print output xml file")
(options, args) = parser.parse_args()
if not options.inputfilename:
print "You must provide an input filename, -h or --help for help"
exit(1)
if not options.inputfilename:
print "You must provide an output filename, -h or --help for help"
exit(1)
out=open(options.outputfilename,'w')
sf = shapefile.Reader(options.inputfilename)
shapeRecs = sf.shapeRecords()
print "shp loaded"
out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")
out.write("<osm generator=\"srtmshp2osm\" version=\"0.6\">")
index= 3000000000
l=len(shapeRecs)
for shapeRec in shapeRecs:
height=int(shapeRec.record[0]) # there only one field in my shapefile, 'HEIGHT'
points=shapeRec.shape.points # [[x1,y1],[x2,y2]...]
# nodes:
firstindex = index
for p in points:
node = etree.Element("node",
id=str(index),
lat=str(p[1]),
lon=str(p[0]),
version="1")
out.write(etree.tostring(node, pretty_print=options.pretty))
index +=1
lastindex=index-1
# way:
way = etree.Element("way", id=str(index),version="1")
index +=1
for i in range(firstindex,lastindex):
way.append(etree.Element("nd", ref=str(i)))
# tags:
way.append(etree.Element("tag",k="elevation", v=str(height)))
way.append(etree.Element("tag",k="contour", v="elevation"))
if height % 100 ==0:
way.append(etree.Element("tag",k="name", v=str(height)))
out.write(etree.tostring(way, pretty_print=options.pretty))
#progress:
l-=1
sys.stdout.write("\r")
sys.stdout.write("% 12d" % l)
sys.stdout.flush()
print ""
out.write("</osm>")
out.close()