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Diffstat (limited to 'docs/source/operations/projections/utm.rst')
| -rw-r--r-- | docs/source/operations/projections/utm.rst | 15 |
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diff --git a/docs/source/operations/projections/utm.rst b/docs/source/operations/projections/utm.rst index b45dafc1..82715a02 100644 --- a/docs/source/operations/projections/utm.rst +++ b/docs/source/operations/projections/utm.rst @@ -76,6 +76,21 @@ Optional Use faster, less accurate algorithm for the Transverse Mercator. +.. option:: +algo=auto/evenden_snyder/poder_engsager + + .. versionadded:: 7.1 + + Selects the algorithm to use. The hardcoded value and the one defined in + :ref:`proj-ini` default to ``poder_engsager``, that is the most precise + one. + + When using auto, a heuristics based on the input coordinate to transform + is used to determine if the faster Evenden-Snyder method can be used, for + faster computation, without causing an error greater than 0.1 mm (for an + ellipsoid of the size of Earth) + + Note that :option:`+approx` and :option:`+algo` are mutually exclusive. + .. include:: ../options/ellps.rst Further reading |