SRTM.py 0.1.2

Python parser for the Shuttle Radar Topography Mission elevation data

# SRTM.py

SRTM.py is a python parser for the Shuttle Radar Topography Mission elevation data.

See: [http://www2.jpl.nasa.gov/srtm/](http://www2.jpl.nasa.gov/srtm/).

## Usage:

import srtm
elevation_data = srtm.get_data()
print 'CGN Airport elevation (meters):', elevation_data.get_elevation(50.8682, 7.1377)

With get\_elevation() an elevation of the the nearest location found in the SRTM data will be given.
If you need an approximation based on nearby locations, you can use:

elevation_data.get_elevation(50.8682, 7.1377, approximate=True)

You can create elevation images with:

import srtm
geo_elevation_data = srtm.get_data()
image = geo_elevation_data.get_image((500, 500), (45, 46), (13, 14), 300)
# the image s a standard PIL object, you can save or show it:
image.show()

On every elevation requested the library will:

* Check if the SRTM file is stored locally
* If not -- download it from NASA servers
* Parse elevations from it

That's why the first run of your application will always take a few seconds.

### Example images

Istra and Trieste:


Rio de Janeiro:


Miami and florida:


Sidney:


## gpxelevations

gpxelevations is a utility commandline tool to add/update elevations in a GPS track file:

$ gpxelevations -h
usage: gpxelevations [-h] [-o] [-p] [-s] [-c] [-f FILE] [-v]
[gpx_files [gpx_files ...]]

Adds elevation to GPX files

positional arguments:
gpx_files GPX files

optional arguments:
-h, --help show this help message and exit
-o, --overwrite Overwrite existing elevations (otherwise will add
elevations only where not yet present)
-p, --approximate Approximate elevations with neighbour point elevations
-s, --smooth Smooth elevations
-c, --calculate Calculate elevations (but don't change the GPX file
-f FILE, --file FILE Output filename
-v, --verbose Verbose output

## License

GPX.py is licensed under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)