[OSM-talk] Where have all the contributors gone?

Igor Brejc igor.brejc at gmail.com
Mon Dec 1 15:57:20 GMT 2008

How about covering your area with land use data using yahoo/landsat? 
It's something I do occasionally at the end of the work day when I'm 
totally exhausted - it's a nice dumb work which helps my brain turn off. 
And it comes handy for various hiking maps (example of my area: 

Anyway, I find mapping footpaths in forests much more interesting than 
plain old residential streets and roads - fewer people tend to cover 
them and sometimes it turns out be a real adventure - getting lost or 
meeting http://en.wikipedia.org/wiki/Image:Wild_Boar_Habbitat_3.jpg

Not to mention the health benefits ;)


Donald Allwright wrote:
> >At 9:00am on a Sunday morning, the meaning of "no cycling" on urban
> >footpaths mysteriously disappears :-)
> Unfortunately the mud doesn't, which if Saturday is anything to go by 
> would have been a bit too much for my non-mountain bike :-)
> >The real challenge as has been pointed out is the white space without a
> >nearby contributor. Especially in the sparsely populated locations of our
> >planet
> Last winter I spent many dark evenings tracing the jungle rivers and 
> mountain lakes in Peru from the yahoo satellite images. The vast 
> majority of this will be nigh-on impossible to map using a GPS, so I 
> considered this to be a useful contribution in an area previously 
> mostly empty (OSM-wise). Some of these have probably never been mapped 
> to this level of accuracy before. And I still haven't finished yet 
> (Lakes are only about half-way up the country, and most of the coastal 
> rivers still need doing), so I reckon that'll keep me going this 
> winter. Bolivia and Brazil still have a lot of water unmapped, so that 
> would be something you could consider. I'm sure there are many other 
> parts of the world with similar needs. As urban areas lend themselves 
> well to on-the-ground mappers with GPS devices these are better left 
> to locals who can gather street names, but even here I reckon there's 
> room for basic mapping of major highways from satellite, as that will 
> form a framework around which people on the ground can organise their 
> own mapping. For example people might decide to map completely a 
> square enclosed by roads, rivers etc., but unless these features are 
> already on the map it's harder to plan something like this. When I 
> actually got to visit one such road I was able to adjust it on the 
> basis of GPS data, thus improving the accuracy.
> Donald
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