Package pygeodesy :: Module elevations |
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# Module elevations

Functions to obtain elevations and geoid heights thru web services, for (lat, lon) locations, currently limited to the Conterminous US (CONUS), see also module geoids and classes GeoidG2012B, GeoidKarney and GeoidPGM and USGS10mElev.py.

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Version: 19.03.15

Functions
elevation2(lat, lon, timeout=2.0) Get the geoid elevation at an `NAD83` to `NAVD88` location. |
geoidHeight2(lat, lon, model=0, timeout=2.0) Get the `NAVD88` geoid height at an `NAD83` location. |

Variables
| __all__ = `_ALL_LAZY.elevations`

Function Details

### elevation2(lat, lon, timeout=2.0) |
Get the geoid elevation at an `NAD83` to `NAVD88` location. Parameters: `lat` - Latitude (`degrees`). `lon` - Longitude (`degrees`). `timeout` - Optional, query timeout (seconds). Returns: 2-Tuple (`elevation, data_source`) in (`meter, str`) or (`None, error`). Note: The returned `elevation` is `None` if lat or lon is invalid or outside the `Conterminous US (CONUS)`, if conversion failed or if the query timed out. The `error` is the `HTTP-, IO-, SSL-, Type-, URL-` or `ValueError` as a string (`str`). See Also: USGS National Map, the FAQ, geoid.py, module geoids, classes GeoidG2012B, GeoidKarney and GeoidPGM.

### geoidHeight2(lat, lon, model=0, timeout=2.0) |
Get the `NAVD88` geoid height at an `NAD83` location. Parameters: `lat` - Latitude (`degrees`). `lon` - Longitude (`degrees`). `model` - Optional, geoid model ID (`int`). `timeout` - Optional, query timeout (seconds). Returns: 2-Tuple (`height, model_name`) in (`meter, str`) or `(None, error`). Note: The returned `height` is `None` if lat or lon is invalid or outside the `Conterminous US (CONUS)`, if the model was invalid, if conversion failed or if the query timed out. The `error` is the `HTTP-, IO-, SSL-, Type-, URL-` or `ValueError` as a string (`str`). See Also: NOAA National Geodetic Survery, Geoid, USGS10mElev.py, module geoids, classes GeoidG2012B, GeoidKarney and GeoidPGM.