[OSM-talk] Overlaying areas/points on OSM base map

[Lambertus]

LeedsTracker wrote:
> Hello all,
> 
> At work we could do with a map of areas we cover (bits of west and
> north Yorkshire). I am thinking of something like a translucent colour
> overlay over a base streetmap.
> 
> It would have maybe 6 different colours for different areas, and a few
> pins to mark specific locations.
> 
> I can see how I might do this with Google Earth/Maps - I could overlay
> this in a KML file which would be handy for teams in different bases.
> 
> But can this sort of thing be done in OSM?
> 
Yes, this can be done in OSM, or rather OpenLayers.

Have a look at the javascript code and especially the KML files that 
come with http://garmin.na1400.info/routable.php for the transparent 
areas with different colours. Then have a look at 
http://yournavigation.org for an application that uses markers in 
OpenLayers.


There's also the OpenLayers documentation/examples and the OpenLayers 
page in the wiki: http://wiki.openstreetmap.org/wiki/OpenLayers