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qwat / QWAT

TEKSI Water module (project QWAT) - QGIS project
https://www.teksi.ch
GNU General Public License v2.0
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Improve Datum handling for copy/paste in QGIS #236

Closed haubourg closed 6 years ago

haubourg commented 7 years ago

Datum handling in current master and qgis 2 isn't using correctly datum transformations, which can lead in geometry precision loss when copy/pasting features from between two SRS using differente datum, which is the case in switzerland between new MNT95 and old SRS.

Discussion previously occured in QEP 100: https://github.com/qgis/QGIS-Enhancement-Proposals/issues/100 QWAT group decided to get involved on the 20/10/2017 to fix that. Core work is asked to Nyall Dawson and Graphical improvements can ben done by @3nids .

See the following PR in progress here https://github.com/qgis/QGIS/pull/5535

haubourg commented 7 years ago

@3nids I saw your comment here https://github.com/qgis/QGIS/pull/5535#issuecomment-343388781We still have one day remaining in the budget for code review. Can I ask @pblottiere to spend a day on that? ping @ponceta

3nids commented 6 years ago

@haubourg I'm on the UI now, might be worth waiting for it to be done. Then if Paul feels like going through this it would be awesome, we just need a guy who feels confident with datum concept (which is not my case ;) )

haubourg commented 6 years ago

part 1 is done. Invoice received today .

haubourg commented 6 years ago

PR merged https://github.com/qgis/QGIS/pull/5906 https://github.com/qgis/QGIS/pull/5898 https://github.com/qgis/QGIS/pull/5535