diff options
Diffstat (limited to 'docs/source')
| -rw-r--r-- | docs/source/operations/conversions/topocentric.rst | 4 | ||||
| -rw-r--r-- | docs/source/operations/projections/ortho.rst | 2 |
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 ################################################################################ |