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mapper.eq.lat

mapper

This mapper function returns the first latitude in a sliding window which is equal to a given value.

The associated longitude, elevation and value are those of the selected latitude.

The mapper.eq.lat function must be parameterized with the value against which to test for equality.

mapper.eq.lat is available since version 2.2.0.

See also

Signatures

Examples

// Because latitudes and longitudes are approximated, this test is a bit tricky. NEWGTS 10 1 2 3 2.0 ADDVALUE 20 4 5 6 5.0 ADDVALUE 30 7 8 9 1.0 ADDVALUE [ SWAP 3.999999971129 mapper.eq.lat 0 0 0 ] MAP