From 1ddad0b6014c14286d792715de9c1354404a0349 Mon Sep 17 00:00:00 2001 From: Even Rouault Date: Wed, 1 Sep 2021 11:18:31 +0200 Subject: Doc: mentions EPSG methods that corresponds to topocentric and ortho (fixes #2832) --- docs/source/operations/conversions/topocentric.rst | 4 +++- docs/source/operations/projections/ortho.rst | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) 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 ################################################################################ -- cgit v1.2.3