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).

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Version: 19.01.05

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 `str`. See Also: USGS National Map, the FAQ and USGS10mElev.py.

### 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 `str`. See Also: NOAA National Geodetic Survery and Geoid