mapper.le.lat
mapper
This mapper function returns the first latitude in a sliding window which is less or equal to a given threshold.
The associated longitude, elevation and value are those of the selected latitude.
The mapper.le.lat function must be parameterized with the threshold.
See also
Signatures
Examples
// Remember longitudes and latitudes are approximated, so the result of the MAP may not be what you expect.
NEWGTS
10 1 2 3 2.0 ADDVALUE
20 4 5 6 5.0 ADDVALUE
30 7 8 9 1.0 ADDVALUE
[ SWAP 4 mapper.le.lat 0 0 0 ] MAP