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| author | Kristian Evers <kristianevers@gmail.com> | 2018-04-11 23:58:42 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-04-11 23:58:42 +0200 |
| commit | 75f8841fcab60ee9c0c15e135ec3ebd10fc46d18 (patch) | |
| tree | e8fb5199327097bc6280099a4983d78a82374a22 /docs/source | |
| parent | cb376cb8172896553d3d5b5d0995873264eaf64e (diff) | |
| parent | 38443f7545dad1d849a889921976fa94e9b76264 (diff) | |
| download | PROJ-75f8841fcab60ee9c0c15e135ec3ebd10fc46d18.tar.gz PROJ-75f8841fcab60ee9c0c15e135ec3ebd10fc46d18.zip | |
Merge pull request #929 from kbevers/nsper-updates
Nsper updates
Diffstat (limited to 'docs/source')
| -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 |