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

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

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.

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.

Details

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

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("Fair woods + Poor pasture")
# 
#   cn <- RegionalisedCN(soil = PlynlimonSOIL,
#                        catchment = PlynlimonSUBCATCHMENTS[1,],
#                        lookupTable = dfLookup,
#                        vegetation = PlynlimonVEG,
#                        artificialDrainage = "none")
## ---------------------------------------------