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| author | Kristian Evers <kristianevers@gmail.com> | 2018-04-11 23:11:23 +0200 |
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| committer | Kristian Evers <kristianevers@gmail.com> | 2018-04-11 23:11:23 +0200 |
| commit | 60d86d4914b816143b4145ccae0def0420f2a70d (patch) | |
| tree | 9adf657043f5305b45e6e596d3f68733ab7bf706 /docs/source/operations/projections/nsper.rst | |
| parent | cb376cb8172896553d3d5b5d0995873264eaf64e (diff) | |
| download | PROJ-60d86d4914b816143b4145ccae0def0420f2a70d.tar.gz PROJ-60d86d4914b816143b4145ccae0def0420f2a70d.zip | |
Update docs for nsper
Diffstat (limited to 'docs/source/operations/projections/nsper.rst')
| -rw-r--r-- | docs/source/operations/projections/nsper.rst | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/docs/source/operations/projections/nsper.rst b/docs/source/operations/projections/nsper.rst index 4a8651fc..3f46f2b4 100644 --- a/docs/source/operations/projections/nsper.rst +++ b/docs/source/operations/projections/nsper.rst @@ -4,7 +4,28 @@ Near-sided perspective ******************************************************************************** +The near-sided perspective projection simulates a view from a height +:math:`h` similar to how a satellite in orbit would see it. + ++---------------------+-------------------------------------------------------------+ +| **Classification** | Azimuthal. Neither conformal nor equal area. | ++---------------------+-------------------------------------------------------------+ +| **Available forms** | Forward and inverse spherical projection | ++---------------------+-------------------------------------------------------------+ +| **Defined area** | Global, although for one hemisphere at a time. | ++---------------------+-------------------------------------------------------------+ +| **Options** | ++---------------------+-------------------------------------------------------------+ +| `+h` | Height of the view point above the Earth and must be in | +| | the same units as the radius of the sphere. Required. | ++---------------------+-------------------------------------------------------------| +| `+lat_0` | Latitude (in degrees) of the view position. Defaults to 0. | ++---------------------+-------------------------------------------------------------+ +| `+lon_0` | Longitude (in degrees) of the view position. Defaults to 0. | ++---------------------+-------------------------------------------------------------+ + + .. image:: ./images/nsper.png :scale: 50% - :alt: Near-sided perspective + :alt: Near-sided perspective |