riverreach: returns list of subcatchments between 2 subcatchments on the...

In nickbond/catchstats: Tools for manipulating nested catchment datasets

Description

returns list of subcatchments between 2 subcatchments on the same river ordered upstream to downstream

Usage

riverreach(hierarchy, upstream, downstream, riverdist = NULL)

Arguments

hierarchy	a dataframe containing catchment id and next downstream (nextds) id fields. Hierarchy must have fields 'site' and 'nextds'
upstream	the upstream subcatchment id
downstream	the downstream subcatchment id
riverdist	?

Value

Returns list of subcatchments between 2 subcatchments on the same river.

Note

riverdist, if used, should be the column number of the riverdistance measure in hierarchy. Returns the following error if downstream is not downstream of upstream: Error in while (y != downstream) : argument is of length zero' Note that unlike pairReaches riverreach preserves ordering but cannot trace down and then up tributaries.

Examples

data(mwcats)
#function needs checking.
#riverreach(hierarchy = mwcats[,c(1:2)], upstream='YARR2415', downstream='YARR001')

nickbond/catchstats documentation built on Nov. 22, 2019, 3:41 a.m.