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72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
# bzip2 -d -c germany.osm.bz2 | osmosis --read-xml enableDateParsing=no file=/dev/stdin --bounding-box top=49.761 left=8.589 bottom=49.564 right=9.352 --write-xml file=- | gzip -9 -c > odenwald.osm
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import xml.parsers.expat
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import sys
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import cairo
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from math import pi, log, tan
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WIDTH = 300
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HEIGHT = 300
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lat = 0;
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lon = 0;
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name = "";
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shop = "";
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entries = list()
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# 3 handler functions
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def start_element(elem, attrs):
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global lat, lon, name, shop
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if elem == "node":
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lat = attrs["lat"]
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lon = attrs["lon"]
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elif elem == "tag":
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if attrs["k"] == "name":
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name = attrs["v"]
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elif attrs["k"] == "shop":
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shop = attrs["v"]
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def end_element(elem):
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global lat, lon, name, shop, entries
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if elem == "node" and name \
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and shop in ["supermarket", "bakery", "butcher", "beverages"]:
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#entries.append((lat, lon, shop, name))
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print "\t".join([lat, lon, shop, name]).encode("utf8")
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lat = 0
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lon = 0
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name = ""
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shop = ""
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def char_data(data):
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pass
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p = xml.parsers.expat.ParserCreate()
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p.StartElementHandler = start_element
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p.EndElementHandler = end_element
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p.CharacterDataHandler = char_data
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p.ParseFile(sys.stdin)
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exit()
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fo = open("test2.svg", "w")
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surface = cairo.SVGSurface (fo, WIDTH, HEIGHT)
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ctx = cairo.Context (surface)
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ctx.scale (WIDTH/1.0, HEIGHT/1.0)
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for lat, lon, shop, name in entries:
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lat = float(lat)
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lon = float(lon)
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if shop == "beverages":
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ctx.move_to(lon, -180/pi*log(tan(pi/4 + lat*(pi/180)/2.0)))
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ctx.arc(lon, -180/pi*log(tan(pi/4 + lat*(pi/180)/2.0)), 0.0005, 0.0, 2.0*pi)
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ctx.close_path()
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#ctx.set_source_rgb(1.0, 1.0, 0.0)
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#ctx.set_source_rgb(1.0, 0.0, 1.0)
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#ctx.set_source_rgb(1.0, 0.5, 0.0)
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ctx.set_source_rgb(1.0, 0.0, 0.5)
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ctx.fill_preserve()
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surface.finish()
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