Dear all,
See my answer under the line
Rafael,
We decided to do large scale deletion for a number of reasons.
- Errors within iD that cause many buildings to be traced several times
thus resulting in many many overlapping buildings.
- I personally fixed thousands of overlaps and fixed several thousand of
other validation errors in the area.
I remember those maphatons done remotely that had caused these duplicates.
Haiti OSM community wanted to correct... But it's good if it has been done
- Poor spatial consistency between multiple imagery resources
I don't know what is a poor consistenc.
I though it was a good chance to have multiple High resolution imagery (4 /8 cm)
over the same area every years.
But we can talk about it separatly
- Bing
- 2013 drone imagery
- 2014 drone imagery
- 2015 drone imagery
- Recent GeoEye imagery
- Lack of existing drone imagery led us to acquire high resolution
satellite imagery.
Several time OSM haiti propose to cover this area with drone
- Imagery isn't nearly as clean and sharp as the drone imagery being
shot but is consistent throughout the entire area.
At least this area will be mapped and that is a good news, so happy
mapping party for all.
Remote mapping is good, but the involvement of the OSM community in
the field allows to go further in mobilizing communities on the long
term .
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