It computes equivalent of logical if function in R
Examples
if (FALSE) { # \dontrun{
NDVI=raster(system.file("extdata","NDVI.grd",package="sebkc"))
albedo=raster(system.file("extdata","albedo.grd",package="sebkc"))
LAI=raster(system.file("extdata","LAI.grd",package="sebkc"))
eNB=rastercon( NDVI<0 & albedo<0.47,0.99,rastercon(LAI>=3,0.98,0.97+(LAI*0.0033)))
} # }