On 4/13/2024 1:26 PM, Javier Jimenez Shaw wrote:
On Sat, 13 Apr 2024 at 17:35, Stephen Woodbridge via gdal-dev
wrote:
Thanks, this is NOT the standard Web Mercator projection. I am
aware of EPSG:90013 and EPSG:3857. This projection is used with
HYCOM data that I have extracted in
On Sat, 13 Apr 2024 at 17:35, Stephen Woodbridge via gdal-dev <
gdal-dev@lists.osgeo.org> wrote:
> Thanks, this is NOT the standard Web Mercator projection. I am aware of
> EPSG:90013 and EPSG:3857. This projection is used with HYCOM data that I
> have extracted into geotif files so that I can acc
Thanks, this is NOT the standard Web Mercator projection. I am aware of
EPSG:90013 and EPSG:3857. This projection is used with HYCOM data that I
have extracted into geotif files so that I can accurately project that
onto EPSG:3857. It took some fiddling with the values to get to overlay
visuall
Yes, such CRS was used until EPSG:3857 was added
(900913 tries to mimic Google letters with numbers, as it was used by
google maps).
But the parameters given by Stephen are a bit different. Probably that's
why the number ends with 4
You can see the (deprecated) proj4 string of 900913 at
https://s
On 4/13/24 10:19 AM, Javier Jimenez Shaw via gdal-dev wrote:
Bas, are they really equivalent?
As far as I know they are, where one used to use EPSG:900913 they should
now be using EPSG:3857, as 900913 is deprecated.
https://wiki.openstreetmap.org/wiki/Web_Mercator
Kind Regards,
Bas
--
GPG
If what you need is really EPSG:3857, yes, use it.
However I have seen strange parameters on your projection. The radius of
the sphere is the "average" 3671 km, and you set a false easting and
northing of just 4.4 km. Is that trying to correct the radius of the
sphere? I do not know why you need t
