I am new to OSM, I just downloaded one with the local Vancouver BC Canada area and am looking forward to working with you all.
Here is my question:
I’ve written an open-source application for GeoCaching that draws maps with the GeoCaches overlayed onto the maps ( it’s almost all my own code and entirely in c++). It also will draw track logs and other items on top as well.
It currently renders Google Tile maps, and Garmin IMG format maps. I would like to add rendering support for Open Street maps as well.
I took about 2 hours yesterday and I now have it rendering OSM files (by parsing the XML format) so far but with only simple lines for roads and polys for closed objects. Now what I would like to know is if there a FAQ for settings so I can calculate what colors to draw closed polys and road thickness so I can draw highways larger and small roads smaller etc.
You can see some screenshots of my program so far here:
Yes they are stored separately, there are in shapefiles, created with the coastline checker from OSM data. The coastline checker merges all the individual natural=coastline 's to one big area. See http://wiki.openstreetmap.org/index.php/Mapnik#World_Boundaries. Before the coastline checker, VMAP data was used for the rendering of oceans.
If you manage getting a renderer of coastlines directly from OSM data it would be a huge step forward, noone have done this yet. There are lots of tools for handling coastlines in perl and C, not at all easy.