suitability_measure_flowline_lengths.Rd
Flowline length helper function: Extract NHD flowlines that correspond to groups and calculate length
suitability_measure_flowline_lengths(group_polygons, .group_var = comid)
An sf
polygon feature collection with one polygon for each analysis reach. These may have been delineated previously by splitting the hydraulic model domain into subsections.
The unquoted name of the attribute used to identify groups in the group_polygons
layer. Defaults to comid
A tbl_df
data frame, one row per group (comid
), containing the calculated length of the associated NHDPlusV2 flowline (joined by comid
) clipped to the group polygon extent.