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authorKristian Evers <kristianevers@gmail.com>2021-09-01 22:34:45 +0200
committerGitHub <noreply@github.com>2021-09-01 22:34:45 +0200
commit92e751b8f78ca590b5264805f4a7136bed8cc9b9 (patch)
tree159093002e68ea63ec59ca3aca8f21fb090828e1
parentbde10ed187c32803f7ed8b69ccf27c2d5d37ea2f (diff)
parent831489b72e4ba8d466e8a41b238ebe6578f00965 (diff)
downloadPROJ-92e751b8f78ca590b5264805f4a7136bed8cc9b9.tar.gz
PROJ-92e751b8f78ca590b5264805f4a7136bed8cc9b9.zip
Merge pull request #2834 from OSGeo/backport-2833-to-8.1
[Backport 8.1] Doc: mentions EPSG methods that corresponds to topocentric and ortho (fixes #2832)
-rw-r--r--docs/source/operations/conversions/topocentric.rst4
-rw-r--r--docs/source/operations/projections/ortho.rst2
2 files changed, 5 insertions, 1 deletions
diff --git a/docs/source/operations/conversions/topocentric.rst b/docs/source/operations/conversions/topocentric.rst
index 828ef4e0..14019965 100644
--- a/docs/source/operations/conversions/topocentric.rst
+++ b/docs/source/operations/conversions/topocentric.rst
@@ -46,7 +46,9 @@ topocentric conversion must be preceded by the :ref:`cart` conversion to
perform the initial geographic to geocentric coordinates conversion.
The formulas used come from the "Geocentric/topocentric conversions" paragraph
-of :cite:`IOGP2018`
+of :cite:`IOGP2018`. ``+proj=topocentric`` alone corresponds to the ``EPSG:9836``
+conversion method, ``+proj=cart`` followed by ``+proj=topocentric`` corresponds
+to ``EPSG:9837``.
Usage
################################################################################
diff --git a/docs/source/operations/projections/ortho.rst b/docs/source/operations/projections/ortho.rst
index 2d0e08a8..05c7a547 100644
--- a/docs/source/operations/projections/ortho.rst
+++ b/docs/source/operations/projections/ortho.rst
@@ -37,6 +37,8 @@ around a given latitude and longitude.
ellipsoid must be forced to a sphere, for example by adding a ``+f=0``
parameter.
+This projection method corresponds to ``ÈPSG:9840``.
+
Parameters
################################################################################