[OSM-talk] mspray stealth organized mapping

[Jean-Marc Liotier]

(answer cc: to talk-sn at openstreetmap.org and talk at openstreetmap.org)

Thanks for taking care of our feedback. In Senegal and Mali, 
Openstreetmap has a long history of low quality buildings produced in 
massive quantities by humanitarian actors. Cleaning up after them is 
considerable work, which is never handled by the responsible parties.

Please ensure that your project is registered at 
https://wiki.openstreetmap.org/wiki/Organised_Editing/Activities and has 
its own page, as mandated bu the Organised Editing Guidelines.

You may also want to reconsider the workflow: the existence of 
superposed almost-duplicate buildings shows that the existing data may 
not be correctly taken into account or even downloaded beforehand.

Also, you mention "We will work on the wrongfully mapped/tagged 
buildings when we start validating what has been mapped so far" and that 
is part of the problem: do not let contributors upload a changeset if 
the JOSM validator shows errors or warnings - especially about obvious 
errors such as superposition. Separating production from quality 
assurance is certain to produce low quality: quality as an afterthought 
is ineffectual - quality must be integral to the process.

To drive that point home, I recommend letting your mappers spend a few 
hours fixing errors on Osmose (osmose.openstreetmap.fr). Osmose patrols 
will let them understand the sort of problems we face after them and 
maybe the quality of their work will increase, if they are not driven by 
quantitative metrics...


On 5/22/20 7:55 PM, J at mesN wrote:

 >
 > @mesN has sent you a message through OpenStreetMap with the subject 
Re: mspray stealth organized mapping:
 > J at mesN
 >
 > Hi Jean_Marc,
 >
 > Thanks for reaching out. Yes, these users are part of one of our 
malaria mapping teams who started enumerating in Senegal this week. 
There are 6 mSpray enumerators (4,8,13,15,16,17). We are only mapping 
what we perceive to be residential structures after getting local 
context from our in-country partners to inform this. Sincere apologies 
if this has caused a problem. We will work on the wrongfully 
mapped/tagged buildings when we start validating what has been mapped so 
far.
 >
 > Our lead GIS officer is currently on leave so he will post the 
activity on the wiki page when he returns on Tuesday next week (26th May).