[HOT] Recent building mapping in Malawi

[Bjoern Hassler]

Hi John, hi Frans,

We did write a basic tool that can pick up errors new mappers are making:
https://github.com/OSM-Utilities/JOSM-Scripts-HOT

It's meant to do exactly what you say: Spot issues as soon as possible,
i.e. ideally during a mapathon or at the start of a new campaign. The tool
presents an analysis not by changeset or completed tile, but by user
(directly from OSM), and e.g. gives you the percentage of non-square 4-node
buildings per user. It can also check a number of tags. We've used this at
Cambridge mapathons to identify new mappers that systematically don't
square buildings. (It obviously cannot tell the size of buildings relative
to imagery.) We also use it to identify new mappers that are not mapping a
lot during the mapathon, and may therefore need extra help and
encouragement to have a good experience (and would thus be more inclined to
come back).

We'd be very happy to help you (and whoever else is interested) get it set
up!
Bjoern


On 11 November 2017 at 08:59, Frans Schutz <frans.schutz at gmail.com> wrote:

> You are right.
> I see that as often as well. For sure  beginners who start with ID and
> even start validating after a few Mapping sessions in which the most
> elementry taggings went wrong. It would help if there is a mechanism in HOT
> task mgr which not allows to start validating from ID or when a mapper has
> les than a minimum level.
> Frans
>
> Op vr 10 nov. 2017 om 15:14 schreef john whelan <jwhelan0112 at gmail.com>
>
>> I'm currently adding tags to some 1,500 buildings in Malawi.  Many are
>> from recent HOT projects.  I dislike validating building projects since I
>> never really know what to do with buildings that are three times the size
>> of the image and not square either but if someone could just run JOSM
>> occasionally on the project tiles for these sort of projects and give
>> feedback to the mappers that they really should tag their buildings that
>> would help enormously and the quicker you pick up the new mappers and
>> correct them the less work there is to do later on.
>>
>> It isn't just Malawi by the way but most of these are less than a dozen
>> buildings per mapper and they all have to be visually checked.
>>
>> Thanks John
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> --
>
>
>
>
> Frans
>
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