RegionalisedCN: Calculate Curve Number for soil (HOST) and vegetation (LCM)...

In cvitolo/curvenumber: An implementation of the USDA Soil Conservation Service Curve Number method

Calculate Curve Number for soil (HOST) and vegetation (LCM) maps

Description

Calculate Curve Number for soil (HOST) and vegetation (LCM) maps

Usage

RegionalisedCN(soil, catchment, lookupTable, vegetation,
  artificialDrainage = "none")

Arguments

soil	filename of a shapefile containing the percentage coverage of HOST classes
catchment	SpatialPolygonsDataFrame containing a single catchment boundary to be used as mask to crop the raster.
lookupTable	this is a data.frame to link soil, vegetation and Hydrological conditions.
vegetation	filename of a raster containing the vegetation map.
artificialDrainage	(default = "none"), possible values are none, low, medium, high.

Details

Please make sure that soil, catchment and vegetation are projected in the same Coordinate Reference System (for info see http://spatialreference.org/).

Value

Regionalised Curve Number for a given catchment, this is an integer in the range [0,100] with 0 = no runoff and 100 = all rainfall becomes runoff.

Examples

## Not run: 
  # Load Plynlimon sub-catchments spatial polygons data frame
  data("PlynlimonSUBCATCHMENTS")
  # Load soil map (HOST percentage distribution of classes)
  data("PlynlimonSOIL")
  # Load land cover (VEGETATION 2013) MAP
  data("PlynlimonVEG")
  # Load lookup table
  dfLookup <- MakeLoopkupTable("Severn&Wye")

  cn <- RegionalisedCN(soil = PlynlimonSOIL,
                       catchment = PlynlimonSUBCATCHMENTS[1,],
                       lookupTable = dfLookup,
                       vegetation = PlynlimonVEG,
                       artificialDrainage = "none")

## End(Not run)

cvitolo/curvenumber documentation built on April 19, 2022, 3:33 a.m.