[PROJ] Any EPSG code for visualization order WGS84(s)?

[Alan Snow]

OGC:CRS84 is the equivalent to EPSG:4326 with the visualization axis order
change. It is the SRS used by GeoJSON. Should note that this only works
with GDAL 3+, PROJ 6+. Not sure about an equivalent for the other EPSG
codes.

Best,
Alan



On Sun, Sep 6, 2020, 6:08 AM Roger Bivand <Roger.Bivand at nhh.no> wrote:

> There are plenty of EPSG codes for authority-conformant axis orders of
> WGS84 (not only 4326, but also 9053-9056, 9012, 9014, 9017, 9019, and
> possibly others). In userland in R (and most likely GRASS, QGIS, SAGA,
> PostGIS (?), pyproj, web mapping, etc.), visualization order is absolutely
> the most commonly used and expected.
>
> We are starting to see visualization order points reported and saved as
> 4326, with no indication that the declared CRS should have been
> axis-swapped before saving. This leads to chaos when the file is read and
> treated as real 4326 in another application.
>
> It would be a real simplification if there was an EPSG code (or codes) for
> WGS84 GEOGCRS with visualization axis order to match the way that most
> applications have conceptualized objects up to now. For now we have ad-hoc
> work-arounds, but no way for non-global data sets to check that points are
> E/N or N/E.
>
> Is there such an EPSG code (or codes); if not, who and how can apply to
> the "authorities" to provide support for such a wierd thing? Of course,
> having such an alternative set would permit easy coordinate operations of
> the +proj=axisswap +order=2,1 kind, but not as ad-hoc additions to
> existinng pipelines.
>
> Many different ad-hoc fixes are less good than a single central and
> authorised resolution, and EPSG codes for visualization order WGS84-family
> GEOGCRS are clearly needed by most applications.
>
> Any ideas?
>
> Roger
>
> --
> Roger Bivand
> Department of Economics, Norwegian School of Economics,
> Helleveien 30, N-5045 Bergen, Norway.
> voice: +47 55 95 93 55; e-mail: Roger.Bivand at nhh.no
> https://orcid.org/0000-0003-2392-6140
> https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en
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