[Imports] Thailand Land Use Import

[Nithinat Sangsitthi]

Here is the discussion, however only a few people have taken part in it.
https://forum.openstreetmap.org/viewtopic.php?id=71743

- have you mass deleted what was mapped previously as part of your import?
> With changeset comment "Add landuse around Bangkok"?


No, I was carefully checked when I had to remove something.

Is quality of large ones better, or is it just less obvious that data
> quality is low?


It is less obvious. But in the case of roughly mapped, it can be compared
with most large natural=wood around Thailand, such as a national park
forest area.

Please, revert it and present proposed data as upload in format that is not
> harming current OSM data (publish .osm file for viewing in JOSM, geojson
> file,
> images with representative examples - should be possible with QGIS)


Reverted completely. The source file is here.
https://drive.google.com/file/d/1emWJ9p3WO3bXObPl8nHt4mXeDDdkI-xX/view?usp=sharing

Regards

ในวันที่ ส. 13 ก.พ. 2021 เวลา 20:53 Mateusz Konieczny via Imports <
imports at openstreetmap.org> เขียนว่า:

> You mention some discussion with a local community - can you link it (all
> of them)?
>
> Important note: if local community is happy about such data quality then
> feel free to
> disregard my opinions about data quality, discouraging mappers and
> usefullnes
> of such imports.
>
> If any part of local community is unhappy about data quality: please
> finish reverts
> and removed already imported data.
>
> Feb 13, 2021, 08:53 by nitinatsangsit at gmail.com:
>
> Hello
>
> I was working on land use classification with a semi-automatic process
> done by SCP in QGIS with Sentinel imagery. I thought it could be useful so
> I uploaded it to OSM, but after discuss with community it should be
> considered as import
>
> Importing external, automatically generated data (without supervision or
> review) into OSM
> is definitely an import.
>
> so I have to revert it then and before any upload.
> My work is aim to make land use available in OSM in Thailand.
>
> Although it is not that much precise, it could be better than leave the
> area empty.
>
> I strongly disagree. Low quality geometries such as
>
> https://www.openstreetmap.org/edit?editor=id&changeset=97220712#map=18/13.52826/100.40683
> are worse than nothing as it discourages real mapping (people are much
> more likely
> to map something rather than cleanup low-quality output of automated image
> recognition). See https://i.imgur.com/SYYsWke.png for a copy and
> representative example
> of quality.
>
> Though if local community has consensus that importing something like that
> is OK
> then it is fine to do it.
>
> Also, it appears that you deleted for example
> https://www.openstreetmap.org/way/390010502/history
> https://www.openstreetmap.org/way/387296360/history
> - have you mass deleted what was mapped previously as part of your import?
> With changeset comment "Add landuse around Bangkok"?
>
> (I am unable to see what was really changed, and whatever deleted mapping
> was valuable.
> Due to size of changeset usual tools failed to work -
> https://osmcha.org/changesets/95728109/
> failed to load.)
>
> However, this process may lead to some geometry problem, so I will upload
> only large polygon (more than 10,000 square meters) to avoid small geometry
> which may look weird.
>
> Is quality of large ones better, or is it just less obvious that data
> quality is low?
>
>
> To deal with error that may occur, I will fix all self-intersect of
> geometry, duplicated of pre-mapped things, water features which overlap
> with highway, etc. to make sure it would not affect any navigation.
>
> The example of my work is around
> https://www.openstreetmap.org/changeset/95728073 (small area and overlap
> water haven't been fixed yet)
>
> Data quality seems to be atrociously low, see for example
> https://i.imgur.com/R4wbUnI.png
>
> Fixing it would take more effort than mapping it manually.
>
> I haven't revert it yet because it could be useful to be an example.
>
> Please, revert it and present proposed data as upload in format that is
> not
> harming current OSM data (publish .osm file for viewing in JOSM, geojson
> file,
> images with representative examples - should be possible with QGIS)
>
> If it could be accepted, I will create the wiki page, revert it and
> carefully re-upload it via dedicated user.
>
> Obviously, opinion of a local community is the most important.
>
> Have you told them that you are seeking approval for making an import?
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