OpenStreetMap and Python Andrii V. Mishkovskyi October 27, 2009 Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 1 / 23
It Jam 2009
May 12, 2015
IT Jam 2009 presentation, covering usage of Python with and in OpenStreetMap.
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OpenStreetMap and Python
Andrii V. Mishkovskyi
October 27, 2009
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 1 / 23
What is OpenStreetMap?
In short:
The Wikipedia ofMaps
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 2 / 23
What is OpenStreetMap?
FreeCC-by-SAConstantly evolvingEasy to start
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 3 / 23
Languages used
Ruby siteC++ rendering, editors, utilitiesPython rendering, utilitiesJava utilities, editorsPHP wiki
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 4 / 23
Python tools
bulk upload.pyPythonOsmApiCloudMade’s Python APIMapnik
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 5 / 23
Outline
MapnikOther tools
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 6 / 23
Overview
Render toolWritten in C++Boost.Python for bindingsLots of input pluginsPNG, JPG, SVG, PDF output
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 7 / 23
Example, part 1import mapnikmap = mapnik.Map()map.background = mapnik.Color(’steelblue’)rule = mapnik.Rule()rule.symbols.append(
mapnik.PolygonSymbolizer(mapnik.Color(’#f2eff9’)))
rule.symbols.append(mapnik.LineSymbolizer(
mapnik.Color(’rgb(50%,50%,50%)’), 0.1))style = mapnik.Style()style.rules.append(rule)map.append_style(’Base’, style)
Example, part 1import mapnikmap = mapnik.Map()map.background = mapnik.Color(’steelblue’)rule = mapnik.Rule()rule.symbols.append(
mapnik.PolygonSymbolizer(mapnik.Color(’#f2eff9’)))
rule.symbols.append(mapnik.LineSymbolizer(
mapnik.Color(’rgb(50%,50%,50%)’), 0.1))style = mapnik.Style()style.rules.append(rule)map.append_style(’Base’, style)
Example, part 1import mapnikmap = mapnik.Map()map.background = mapnik.Color(’steelblue’)rule = mapnik.Rule()rule.symbols.append(
mapnik.PolygonSymbolizer(mapnik.Color(’#f2eff9’)))
rule.symbols.append(mapnik.LineSymbolizer(
mapnik.Color(’rgb(50%,50%,50%)’), 0.1))style = mapnik.Style()style.rules.append(rule)map.append_style(’Base’, style)
Example, part 1import mapnikmap = mapnik.Map()map.background = mapnik.Color(’steelblue’)rule = mapnik.Rule()rule.symbols.append(
mapnik.PolygonSymbolizer(mapnik.Color(’#f2eff9’)))
rule.symbols.append(mapnik.LineSymbolizer(
mapnik.Color(’rgb(50%,50%,50%)’), 0.1))style = mapnik.Style()style.rules.append(rule)map.append_style(’Base’, style)
Example, part 2
layer = mapnik.Layer(’world’,"+proj=latlong +datum=WGS84")
layer.datasource = mapnik.Shapefile(file=’boundaries.shp’)
layer.styles.append(’Base’)map.layers.append(layer)map.zoom_to_box(layer.envelope())mapnik.render_to_file(map, ’world.png’, ’png’)
Example, part 2
layer = mapnik.Layer(’world’,"+proj=latlong +datum=WGS84")
layer.datasource = mapnik.Shapefile(file=’boundaries.shp’)
layer.styles.append(’Base’)map.layers.append(layer)map.zoom_to_box(layer.envelope())mapnik.render_to_file(map, ’world.png’, ’png’)
Example, part 2
layer = mapnik.Layer(’world’,"+proj=latlong +datum=WGS84")
layer.datasource = mapnik.Shapefile(file=’boundaries.shp’)
layer.styles.append(’Base’)map.layers.append(layer)map.zoom_to_box(layer.envelope())mapnik.render_to_file(map, ’world.png’, ’png’)
Example, part 2
layer = mapnik.Layer(’world’,"+proj=latlong +datum=WGS84")
layer.datasource = mapnik.Shapefile(file=’boundaries.shp’)
layer.styles.append(’Base’)map.layers.append(layer)map.zoom_to_box(layer.envelope())mapnik.render_to_file(map, ’world.png’, ’png’)
Wait for it...
Ta-da!
IRL example, part 1
import mapnikprojection = mapnik.Projection(
"+proj=merc +a=6378137 +b=6378137 ""+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 ""+no_defs +over +lat_ts=0.0 +units=m")
map = mapnik.Map(900, 600)mapnik.load_map(map, ’/path/to/style.xml’)
IRL example, part 1
import mapnikprojection = mapnik.Projection(
"+proj=merc +a=6378137 +b=6378137 ""+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 ""+no_defs +over +lat_ts=0.0 +units=m")
map = mapnik.Map(900, 600)mapnik.load_map(map, ’/path/to/style.xml’)
IRL example, part 1
import mapnikprojection = mapnik.Projection(
"+proj=merc +a=6378137 +b=6378137 ""+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 ""+no_defs +over +lat_ts=0.0 +units=m")
map = mapnik.Map(900, 600)mapnik.load_map(map, ’/path/to/style.xml’)
IRL example, part 1
import mapnikprojection = mapnik.Projection(
"+proj=merc +a=6378137 +b=6378137 ""+lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 ""+no_defs +over +lat_ts=0.0 +units=m")
map = mapnik.Map(900, 600)mapnik.load_map(map, ’/path/to/style.xml’)
IRL example, part 2
coords = [(30.44, 50.455), (30.465, 50.459)]coords = [mapnik.Coord(*coord)
for coord in coords]coords = [projection.forward(coord)
for coord in coords]bbox = mapnik.Envelope(*coords)map.zoom_to_box(bbox)mapnik.render_to_file(
map, ’whereweare.png’, ’png’)
IRL example, part 2
coords = [(30.44, 50.455), (30.465, 50.459)]coords = [mapnik.Coord(*coord)
for coord in coords]coords = [projection.forward(coord)
for coord in coords]bbox = mapnik.Envelope(*coords)map.zoom_to_box(bbox)mapnik.render_to_file(
map, ’whereweare.png’, ’png’)
IRL example, part 2
coords = [(30.44, 50.455), (30.465, 50.459)]coords = [mapnik.Coord(*coord)
for coord in coords]coords = [projection.forward(coord)
for coord in coords]bbox = mapnik.Envelope(*coords)map.zoom_to_box(bbox)mapnik.render_to_file(
map, ’whereweare.png’, ’png’)
Styles are cool!
Outline
MapnikOther tools
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 18 / 23
bulk upload.py
Mass imports of dataPerfect overview of working with OSMAPI
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 19 / 23
PythonOsmApi
Thin wrapper over HTTP OSM APIAllows editing OSM data
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 20 / 23
CloudMade API
Shameless plug
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 21 / 23
CloudMade API
Access to CloudMade’s servicesRouting, geocoding, tiles . . .More coming soon
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 21 / 23
So. . .
OpenStreetMap is the biggest datadump everMapnik rulesAPIs ruleLots of work yet to be done
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 22 / 23
Links
osm.orgmapnik.orgcloudmade.comwiki.osm.org
Andrii V. Mishkovskyi () OpenStreetMap and Python October 27, 2009 23 / 23
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