R/fSombra6.R

Defines functions fSombra6

Documented in fSombra6

 # Copyright (C) 2010, 2009 Oscar Perpiñán Lamigueiro
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; either version 2
 # of the License, or (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #/
fSombra6<-function(angGen, distances, struct, prom=TRUE){
  stopifnot(is.list(struct),
            is.data.frame(distances))
  ##distances sólo tiene tres distances, así que genero una cuadrícula
  if (dim(distances)[1]==1){ 
    Red<-with(distances,
              data.frame(Lew=c(-Lew,0,Lew,-Lew,Lew),
                         Lns=c(Lns,Lns,Lns,0,0),
                         H=H))
  } else { #distances es una matriz, luego no hace falta generar la cuadrícula
    Red<-distances[1:5,]} #Sólo necesito las 5 primeras filas...necesario por sí  se entrega un data.frame erroneo

###Calculo la sombra debida a cada uno de los 5 seguidores
  SombraGrupo<-matrix(ncol=5,nrow=dim(angGen)[1])
  for (i in 1:5) {SombraGrupo[,i]<-coredata(fSombra2X(angGen,Red[i,],struct))}
  ##Para calcular la Sombra Promedio, necesito el número de seguidores en cada posición(distrib)
  distrib=with(struct,c(1,Ncol-2,1,Nrow-1,(Ncol-2)*(Nrow-1),Nrow-1)) 
  vProm=c(sum(distrib[c(5,6)]),
    sum(distrib[c(4,5,6)]),
    sum(distrib[c(4,5)]),
    sum(distrib[c(2,3,5,6)]),
    sum(distrib[c(1,2,4,5)]))
  Nseg=sum(distrib) ##Número total de seguidores
  ##Con la función SWEEP multiplico el Factor de Sombra de cada tipo (columnas de SombraGrupo) por el resultado de vProm
    
  if (prom==TRUE){
###Factor de Sombra Promedio en el grupo de SEIS seguidores teniendo en cuenta distrib
    FS=rowSums(sweep(SombraGrupo,2,vProm,'*'))/Nseg
    FS[FS>1]<-1
  } else {		
###Factor de sombra en el seguidor #5 debido a los otros 5 seguidores
    FS=rowSums(SombraGrupo)
    FS[FS>1]<-1}
  return(zoo(FS, index(angGen)))
}

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solaR documentation built on May 2, 2019, 6:07 p.m.