Shuttle Radar Topography Mission (SRTM) is an international research effort to create a global digital elevation dataset. Since the data files are large I created a small web service in Go so applications can access the data without having the users download the whole database locally.
go-srtm only works with raw one arc-second data files (.hgt, 3601x3601). Each file should be 25,934,402 bytes.
You can use go get github.com/sakisds/go-srtm to grab the sources and compile a binary. go-srtm doesn't have any external dependencies.
This endpoint returns the elevation value for a set of coordinates
Parameters:
locations: Where to look for elevation. Each point is two float numbers (latitude and longitude) separated with a comma (,). You can query multiple locations in one call by separating the points with|, for example/elevation?locations=21.124,37.157|22.984,23.487will return elevation for (21.124, 37.157) and (22.984, 23.487).
Returns:: JSON Array of the requested data in meters. If data is not available at a requested point it will return
-1.
Returns elevation data every 30m on a path connecting two points.
Parameters:
from: Where does the path start (latitude and longitude, comma separated)to: Where does the path end (latitude and longitude, comma separated)
Returns: JSON Array of elevation data.
Returns the list of available SRTM tiles
Returns: JSON Array of available SRTM files (string, no extension). For example: ["N41E021", "N41E022"]
go-srtm will look for config.ini in the current path. A sample configuration file:
address = ""
port = "8080"
dataset = "/srv/srtm"dataset should point to the directory containing the SRTM data. You can use address to set which IP the service
is listening on.
go-srtm is available under the MIT license.