[HOT] How to handle existing features for #1018 Nepal task

Steve Bower sbower at gmavt.net
Thu Apr 30 06:07:10 UTC 2015

I'm working on project #1081 Nepal detailed mapping 2nd pass. I'm new to
OSM but have lots of GIS experience.

Not sure how best to handle existing features already in the data (either
from the 1st pass, or predating the project)

(1) The instructions say "do not trace all the paths in the fields or small
paths of a few hundred meters that do not connect to road networks." If
there are existing paths like that in the data, should I delete them?

(2) An existing long way tagged "highway=track" appears to start as a track
that could support motorized vehicles (2 tire tracks are visible), but soon
becomes very difficult to distinguish and is perhaps impassible. I'm
guessing it was traced from different imagery (I checked Bing and MapBox,
per the instructions) - I would not have traced much of it - too hard to
see. Should I split this long way and label the second part
'highway=unclassified' or similar?

(3) Some small hamlets of 5-10 buildings, accessible only by paths, are
enclosed in existing 'landuse=residential' polygons. The validation
instructions are to confirm there are highways connecting 'residential'
areas, and that there are 'residential' polygons around clusters of "20 or
so houses". Should I remove the 'residential' polygons around tiny hamlets
that are not on roads?

(By the way, I read the AAAARRRRGH! thread and agree with Stacey and others
that more detailed project instructions would be one key way to improve
quality and consistency, especially from new users. My questions reflect
the sort of basic examples that could be part of more detailed
instructions. Being a new user with "fresh eyes", I could help with that -
but that's a different thread.)

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