catchstats includes a number of functions written by Chris Walsh for working with nested catchment or river-network data tables, to identify all upstream areas, all downstream areas, segments or sub-catchments between catchment pairs etc. All of these functions require a dataframe that includes a unique catchment identifier field (column) and a field (column) identifying the next downstream catchment id. Together these are referred to as a 'hierarchy table'.

To install run the following code:

  # install devtools pacakge
  install.packages(c("devtools"))

  # install catchstats package
    devtools::install_github("nickbond/catchstats")

    # Remove the package zip after installation
    unlink("catchstats.zip")
    
    #load library
    library(catchstats)

To be completed

Nick Bond [email protected]