[OSM-talk] Announcing Maps4Mac

Daniel Sabo danielsabo at gmail.com
Sun Jan 30 01:42:47 GMT 2011

Maps4Mac ( http://code.google.com/p/maps4mac ) is an on demand offline map browser for MacOS 10.6. It allows you browse and search maps, load gpx file overlays, track your position, and generate gps logs.

It uses Mapnik as the rendering engine, and in addition to osm data you can use it to display any Mapnik XML file.

The map data is stored in a standard database format (either PostGIS or SpatiaLite), so you can access and manipulate the data with standard tools in addition to rendering it.

Developing this has really made me see how limited a view of OSM data the slippymap provides, people map a lot of useful information that you don't see unless you download the XML. While the current Maps4Mac rendered tag set is the same as osm2pgsql imports for the slippymap you can still find things that don't otherwise render by searching (e.g. the slipplymap doesn't show very many values for shop=*).

The Project: http://code.google.com/p/maps4mac
Setup instructions: http://code.google.com/p/maps4mac/wiki/Maps4MacSetup
Getting maps: http://code.google.com/p/maps4mac/wiki/GettingMaps

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