[HOT] How newer mappers can help a lot with the validation process

john whelan jwhelan0112 at gmail.com
Thu Feb 11 13:33:16 UTC 2016

I'm not sure this is the best use of our very limited number of mappers.
Just scanning a tile takes time, so the optimum use of mapper time is to
have them scan once when they map and have a validator scan once.

For a productivity point of view its better to have new mappers split the
tiles twice and map a tiny tile completely than have twenty of them go over
the same area.  From the same point of view its better to have them map
where we have good imagery than map where quote "You may have to squint a
bit".  Mapping whilst squinting takes more time to map the same area than
mapping where the imagery is good.  No matter where they map it will be
useful to someone if not a short term MSF or American Red Cross project and
to be honest if something like Ebola crops up having fairly good mapping of
existing highways and villages in place before you start helps those
projects in the field at least plan out what and where.

Cheerio John

On 10 February 2016 at 10:28, Blake Girardot <bgirardot at gmail.com> wrote:

> Hi all,
> I just want to mention, that new mappers can really help with the
> validation process by doing what they typically do: Map in roads and
> buildings but into "Completed" task squares.
> You do not need to mark a task square "Validated", but just reviewing the
> completed squares and filling in missing things or fixing up buildings that
> might not be mapped very well (squaring up the rectangular buildings :) is
> immensely helpful.
> I wrote a short OSM Diary entry that says basically the same thing:
> http://www.openstreetmap.org/user/bgirardot/diary/36235
> I just thought I would mention it because if you see projects on the
> Tasking Manager that look "done" just know you can always help a bit more
> by reviewing "Completed" task squares just to double check nothing was
> missed even if you do not feel experienced enough to "Validate" a task
> square.
> This is especially true for projects where we have made a call for more
> mappers on the email list or via twitter. Double and triple checks to make
> sure the mapping in the instructions is actually complete really helps in
> the process and gets the people on the ground the best data we can possible
> generate for them.
> Cheers,
> Blake
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