Alexander W. Janssen
alexander.janssen at gmail.com
Tue Jul 8 07:02:54 UTC 2014
On Tue, Jul 8, 2014 at 1:09 AM, Severin Menard <severin.menard at gmail.com> wrote:
> Hi Alexander,
> On Mon, Jul 7, 2014 at 1:09 PM, Alexander W. Janssen
> <alexander.janssen at gmail.com> wrote:
>> On Mon, Jul 7, 2014 at 10:43 AM, Dan S <danstowell+osm at gmail.com> wrote:
>> > Hi Alex,
>> Hi Dan!
>> > 1) Yes, sometimes it's frustratingly difficult with low-res imagery to
>> > know what you can contribute. I would say DEFINITELY carry on mapping
>> > those big waterways you mention. In my experience, when we're trying
>> > to map an unmapped area, having those landmarks in OSM's database
>> > (waterways, major roads, residential areas) really helps future
>> > mappers to have points of reference, even if they are approximate and
>> > need refining later.
>> OK, will continue with that.
>> > 2) Re farmlands and forests: I sometimes draw these in, but not often.
>> > I agree with you that it seems helpful to give a rough picture of the
>> > landscape to expect, BUT on the other hand, I think having these
>> > polygons all over can sometimes make the more important jobs harder:
>> > jobs such as checking that every single building has been captured.
>> > And since these landuse polygons are pretty much never requested in
>> > the tasks (apart from landuse=residential which is often a crucial
>> > first step), it seems the locals and the aid organisations don't
>> > particularly need them. So I would suggest don't spend much time on
>> > those.
>> Ah, allright. Well, I prioritize anyway; if I'm in the mood I'll just
>> draw it anyway :-)
> I would say it depends on the situation. Eg in Khartoum
> (http://www.openstreetmap.org/#map=12/15.7493/32.5389) I found interesting
> to add the residential areas as well as the brownfields and farmlands around
> or inside. Brown-fields and farmlands rather than something left blank also
> say we did not miss a residential area.
Good point. The green- and brownfield topic is interesting. I'm just
comited to Sierra Leone tasks and I see a lot of areas which seem to
be recently fire cleared. Is there a tag for that or should we assume
that this is now "greenfield" as it will be either residential or
The best thing about procrastinating is you can do it NOW and ANYTIME.
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