Extract the minimum elevation of the digital elevation model
(DEM, weber_2020_demelbe1d) below the indexed hectometer
polygon of sf.afe_csa.
Arguments
- x
must be a single
integerindexing one hectometer polygon ofsf.afe_csaalong the River Elbe.xmust be element ofseq(from = 1, to = length(sf.afe_csa), by = 1).
