Description : | Invoking 'SRTM(data)' with data being a matrix of lat/lon points (eg' [45.55,
5.56;-4.67, 5.45; 6.534, -12.34]) will return a matrix 'height' , the same
length as data containing the ground altitude of the points contained in data.
It uses 3'arcsec shuffle radar tomography mission (SRTM) data that are freely
available at http://www2.jpl.nasa.gov/srtm/cbanddataproducts.html. The folder
containing the SRTM files (*.hgt) must be instructed in the variable 'path' on
line 8 of the script
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