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authorKristian Evers <kristianevers@gmail.com>2018-04-10 11:36:47 +0200
committerGitHub <noreply@github.com>2018-04-10 11:36:47 +0200
commite634a07ae7d389c4a3e8c484233a7b90f696b06d (patch)
tree0d59d1b4e46fe66099d6724a6bfb18f47c41fe0d /docs/source
parent875d5168b7978fb35ae3e71be85baa176403447d (diff)
parentb7c59722cb0058391e47d2899d510961a0985c59 (diff)
downloadPROJ-e634a07ae7d389c4a3e8c484233a7b90f696b06d.tar.gz
PROJ-e634a07ae7d389c4a3e8c484233a7b90f696b06d.zip
Merge pull request #926 from kbevers/airy-updates
Airy updates
Diffstat (limited to 'docs/source')
-rw-r--r--docs/source/operations/projections/airy.rst10
1 files changed, 9 insertions, 1 deletions
diff --git a/docs/source/operations/projections/airy.rst b/docs/source/operations/projections/airy.rst
index d2730592..eefda4e9 100644
--- a/docs/source/operations/projections/airy.rst
+++ b/docs/source/operations/projections/airy.rst
@@ -3,6 +3,11 @@
********************************************************************************
Airy
********************************************************************************
+
+The Airy projection is an azimuthal minimum error projection for the region
+within the small or great circle defined by an angular distance,
+:math:`\phi_b`, from the tangency point of the plane :math:`( \lambda_0, \phi_0 )`.
+
+---------------------+----------------------------------------------------------+
| **Classification** | |
+---------------------+----------------------------------------------------------+
@@ -14,7 +19,10 @@ Airy
+---------------------+----------------------------------------------------------+
| **Options** |
+---------------------+----------------------------------------------------------+
-| `+lat_b` | |
+| `+lat_b` | Angular distance from tangency point of the plane |
+| | :math:`( \lambda_0, \phi_0 )` where the error is kept at |
+| | minimum. Defaults to :math:`90^{\circ}` which is |
+| | suitable for hemispherical maps. |
+---------------------+----------------------------------------------------------+
| `+no_cut` | Do not cut at hemisphere limit |
+---------------------+----------------------------------------------------------+