kumy/srtm-server repository overview

⁠SRTM Server

A Flask based python REST API for the srtm module to get elevations for an area described by a lat/lon bounding box.

⁠To run:

pip install -r requirements.txt
python ./srtm_server.py

Starts on port 5000

⁠Heroku deployment

Get toolbet from here: https://devcenter.heroku.com/articles/getting-started-with-python#set-up⁠

Run the following commands:

heroku login
virtualenv venv

Just on Windows:

venv\Scripts\activate.bat

Just on *NIX:

source venv/bin/activate

pip install -r requirements.txt --allow-all-external
heroku create
git push heroku master
heroku ps:scale web=1
heroku open

Browser should open displaying "Hello World!"

⁠To make a request

Form a URL as follows:

APP_URL/api/getElevations?north=TOP_LAT&south=BOTTOM_LAT&east=RIGHT_LON&west=LEFT_LON&resolution=RES

E.g.

https://shielded-ridge-5272.herokuapp.com/api/getElevations?north=-37.7&south=-38&east=145.2&west=144.9&resolution=256⁠

or

localhost:5000/api/getElevations?north=-37.7&south=-38&east=145.2&west=144.9&resolution=256⁠

⁠Return type

An 8 bit RBG png image height map of the area specified is returned. Each pixels value represents height above sea level in meters encoded as follows;

Height(m) = R*255 + G + B*100

E.g.

⁠Get elevation from one coordinate pair

Form a URL as follows:

APP_URL/api/getElevation?lat=LAT&lon=LON

E.g.

http://localhost:5000/api/getElevation?lat=43.6168&lon=6.95063⁠ 79

⁠Get country code from one coordinate pair

Form a URL as follows:

APP_URL/api/getCountry?lat=LAT&lon=LON

E.g.

http://localhost:5000/api/getCountry?lat=43.6168&lon=6.95063⁠ FR

⁠Licence

The data file polygons.properties is available under a Creative Commons Attribution-Share Alike License⁠ in accordance with the license from https://github.com/bencampion/reverse-country-code⁠. It was copied and fixed from daveross/offline-country-reverse-geocoder⁠