[HOT] Help wanted cleaning up in Africa, needs JOSM and Todo plugin

john whelan jwhelan0112 at gmail.com
Sun Oct 16 14:44:38 UTC 2016


A lot of HOT projects are in Africa and they ask for buildings.  Often when
I validate on them I see a fair number of buildings mapped but not tagged
correctly.  I'm not saying that all the area=yes untags are from HOT
mapping but a lot of it is in areas where HOT has projects.

Recently I loaded up a couple of African countries in JOSM.  Recently I've
tagged more than a thousand untagged ways mainly highways.  So there are a
lot more highways showing on the map.  Untagged means they don't show.

Many HOT projects seem to like buildings.  These are buildings that are
already there but untagged.  It's a quick way to add lots of buildings.

The other side of the coin is I think there is a responsibility to clean up
as many of the mappers are registered in HOT.  Yes we are part of OSM but
some of the mapping done leaves a little to be desired.  It's only when you
load up a big chunk that you see just how many there are.  Validation often
isn't happening or its done by inexperienced mappers.

Cheerio John



On 16 October 2016 at 10:28, Augustin <xhemp at mykolab.com> wrote:

> Hi
>
> I don't understand the link between your mail subject "Help wanted
> cleaning up in Africa, needs JOSM and Todo plugin" and the Humanitarian
> OpenStreetMap Team Mailing list. Maybe there is a context linked to
> specific countries and a lot of mistakes related to a previous activation,
> which could explain the link with HOT, if so please explain it. If not,
> this email should be posted on the related-countries mailing lists in
> appropriates languages.
> Have a good day from Bouaké,
>
> Augustin
> Le 16/10/2016 à 13:05, john whelan a écrit :
>
> There are thousands of untagged ways marked area=yes.  Most are buildings.
>
> The process for cleaning up is grab a country from
>
> http://download.geofabrik.de/africa.html
>
> use osmconvert64 to convert it into .osm format
>
> osmconvert64 G:\maps\niger-latest.osm.pbf  -o=f:\maps\niger.osm
>
> you may need to select an area within this to make it small enough to fit
> into JOSM.
>
> osmconvert64 f:\maps\nig.osm -b=8.8416511,4.284668,14.2430869,15.6884766
> -o=nig1.osm
>
> start JOSM with lots of memory this is 8 gigs.
>
> java -Xmx8210000000 -jar G:\josm\josm-tested.jar
>
> Load up the local file into 64 bit JOSM.
>
> Go to Edit, Preferences, validator, and untick everything except untagged,
> empty and one node ways.  This is purely for speed.
>
> Validate, select the untagged ways, search in them for area=yes and add
> them to the todo list.  Tag them.
>
> Cheerio John
>
>
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