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epsg.io is misleading people in believing it is a reference #171

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rouault opened this issue Jan 13, 2021 · 0 comments
Open

epsg.io is misleading people in believing it is a reference #171

rouault opened this issue Jan 13, 2021 · 0 comments

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@rouault
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rouault commented Jan 13, 2021

Hi,

the use of the epsg namespace in epsg.io is misleading people in believing it is the ultimate source of truth. When presenting objects like CRS, it is probably OK, but for coordinate transformations, when datum shifts are involved, there are always more or less arbitrary choice to make if the user doesn't choose the datum transformation itself. It would be honest in the UI to add a prominent warning that it is one possible transformation, not necessarily the only one (that could be restricted to situations where datum transformations are involved)

Trigger for this is this GDAL / PROJ ticket ( OSGeo/gdal#3377 (comment) ) where users take for granted epsg.io output. And I've seen such pattern in other tickets too.

neteler added a commit to neteler/grass that referenced this issue Oct 16, 2024
As epsg.io is partially outdated (see [source](maptiler/epsg.io#171) and related) and PROJ is our engine anyway, this PR switches the references in the GUI to https://spatialreference.org.
neteler added a commit to OSGeo/grass that referenced this issue Oct 17, 2024
As epsg.io is partially outdated (see [source](maptiler/epsg.io#171) and related) and PROJ is our engine anyway, this PR switches the references in the GUI to https://spatialreference.org.

* "See also" section: added URLs to CRS Explorer and EPSG Geodetic Parameter Dataset

Co-authored-by: Vaclav Petras <[email protected]>
neteler added a commit to OSGeo/grass that referenced this issue Oct 17, 2024
As epsg.io is partially outdated (see [source](maptiler/epsg.io#171) and related) and PROJ is our engine anyway, this PR switches the references in the GUI to https://spatialreference.org.

* "See also" section: added URLs to CRS Explorer and EPSG Geodetic Parameter Dataset

Co-authored-by: Vaclav Petras <[email protected]>
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