Making Maps from OpenStreetMap Data

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See also OSM, OSM-Daten zu Karten aufbereiten(german) 

 >> Work in progress... (by Hao) <<

Overview

This is a how to/knowhow page about making nice web maps from OpenStreetMap data.

See also Map Making Overview at OSM Wiki.

Our plan (see Team below) is to put everything in a single script file (tbd.).

Use Case 'Vintage Map'

As a first use case we will show how to make a Vintage Map from OpenStreetMap data.

tbd.

Workflow

Pls. note that this is still work in progress and thus experimental, suboptimal and at worst partially broken.

The workflow consists of followin steps:

  • Step 0. Prepare software and config data.
  • Step 1. Download, convert and clip OSM data. You can skip to Step 3 Style data
  • Step 2a. Enhance SQLite dataset.
  • Step 2b. Do some other preprocessing.
  • Step 3. Style data.
  • Step 4. Publish map

As said before, the goal is to wrap step 1 and 2 into one single script.

Step 0. Prepare software and config data

  • Install software: OGR, SpatiaLite, TileMill
  • Get config data, e.g. modified osmconf.ini
  • Prepare clip boundary (e.g. liechtenstein_schloss_bbox.geojson)

Step 1. Download, convert and clip OSM data (PBF file in, SQLite/SpatiaLite file out): 

 > ogr2ogr -f "SQLite" liechtenstein.sqlite
   /vsicurl/http://download.geofabrik.de/europe/liechtenstein-latest.osm.pbf 
   -dsco SPATIALITE=YES -skipfailures -progress -overwrite 
   --config OSM_CONFIG_FILE osmconf.ini -gt 65536 
   -clipsrc liechtenstein_schloss_bbox.geojson -clipsrclayer OGRGeoJSON 
   -nlt PROMOTE_TO_MULTI

Step 2a. Enhance SQLite dataset by shuffling geo objects around (using Spatialite, SQLite file in/out)

  • Convert Polygons to Points and add them to points as POIs.
  • Eventually convert multilinestring to linestring (can TileMill/Mapnik and QGIS handle multilinestrings/multipolygons?).

Step 2b. Do some other preprocessing using preprocessing tools (Python, SQLite file in/out)

  • line smoothing of streets
  • tbd.

Step 3. Style data using TileMill

Step 4. Publish map on the web

Notes

  1. Test
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Team

Von «https://giswiki.hsr.ch/index.php?title=Making_Maps_from_OpenStreetMap_Data&oldid=49886»