Hello,
Just wanted to point out that I did some updates on the wiki while
working on the data transformation :
* minor about fields (added some fixme, added a few fields)
* about geodesic system used : we finally chose not to transform to
wgs84 because the local system has a topographic accuracy, and is close
to wgs84 (OSM users won't see a difference : 30-50 cm with standard qgis
tranformation, or 1.5m taking into account epoch). We are on the Pacific
and the tectonic plate is moving of 7cm a year. So we chose to use the
local system wich is fixed on time and ensure to keep orginal accuracy
which is high and great value. Users won't create position error with
inverse transformation. We have discussed the issue on french mailing
list (discussion is linked on the wiki page of the import plan).
Have a great week end,
Violaine
On 30/08/2019 15:15, Violaine_Do wrote:
Hello,
The SAU (similar to national geographic institute, in French
Polynesia) has requested my support to import some of their data into
OSM. We have the licence agreement ok.
We plan to start a first pilot with the commune of Arue, in order to
test the quality of our import process and improve it if needed.
We would be very happy if you could bring your constructive inputs
about this, please have a look at wiki page dedicated for that, you
will find the data transformation scheme we used.
The details are available on the wiki here
(https://wiki.openstreetmap.org/wiki/SAU_data_to_OSM) and you can also
check the Data transformation model here
(https://wiki.openstreetmap.org/wiki/SAU_data_to_OSM/Data_transformation_and_follow_up#Per_table
)
We are looking forward for feedbacks from you before we proceed (from
october). Please let us know if there are any comments, questions or
concerns.
Sincerely,
Violaine, and SAU team
--
Violaine_Do (https://wiki.openstreetmap.org/wiki/User:Violaine_Do)
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Violaine_Do
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