View source: R/lake_distance.R
closest_lake_distance | R Documentation |
Find the distance to the closest upstream lake, the number of upstream lakes, and the area of upstream lakes
closest_lake_distance(lines, lakes, outlet, size_threshold = 4, map = FALSE)
lines |
sf lines object |
lakes |
sf polygon object |
outlet |
integer row index of outlet reach relative to lines |
size_threshold |
numeric size above which to consider as a lake |
map |
logical show a map output of the results? |
a list with the following elements:
Closest lake distance
Number of upstream lakes
Upstream lake area
## Not run: library(nhdR) data(nhd_sub_lines) data(nhd_sub_lakes) outlet_reach <- terminal_reaches(network = nhd_sub_lines, approve_all_dl = TRUE) outlet <- which(outlet_reach[['comid']] == nhd_sub_lines[['comid']]) closest_lake_distance(nhd_sub_lines, nhd_sub_lakes, outlet = outlet) ## End(Not run)
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