[R] Save a group of matrix

[Alfonso Pérez Rodríguez]

It seems that is not posible to send R file in the messages, well, then I 
resend the message with the script included.


Hello, I'm creating a loop to work with vegan, to get a species abundance 
curve. Here I send the script I've created and also an excel file to prove 
what it can do.
Well, I have a database with 20 years, and each year we have sampled 19 
stratum, and in each estratum we have carry out some sumpling. Then, with 
the script that I've sent I've got to calculate the species abundance curve 
for each stratum but only for one year. I want to be able to do this for the 
20 years sampled but separately, obtaining one independent matrix for each 
year, but I don't know how to do, I sure it's very simple but I've not 
encountered the way to do it.

If someone can help me I would be very grateful, thank you


SCRIPT

library(reshape)
library(vegan)
Input="D:/R/Analisis aprendizaje/Input"
setwd(Input)
Data=read.table("PruebasRNA3.csv",header=T,sep=";",dec=".")

Estr=unique(Data$ESTRATO)
LEstr=length(Estr)

Results= matrix(nrow=20, ncol=LEstr)
Results[is.na(Results)]=0

for(i in 1:LEstr)
  {
  Datasel=Data[Data$ESTRATO==Estr[i],]
  SubData=data.frame(Datasel$PESCA, Datasel$Sp, Datasel$Numero)
  TransData <- reshape(SubData, v.names="Datasel.Numero", 
idvar="Datasel.PESCA",
                       timevar="Datasel.Sp", direction="wide")
  TransData[is.na(TransData)] <- 0
  SAC=specaccum(TransData,"random",permutations=100)
  # str(SAC), a través de esta función veo cual es la estructura de mis 
datos y puedo pedir las columnas              que me interesen, que en este 
caso serían de la 3 a la 5 (sites, richness y sd)
  Pesc=length(SAC$richness)
    for (j in 1:Pesc)
        {
        Results[j,i]=SAC$richness[j]
        }
  }
Results
write.table(Results,file="D:/R/Analisis aprendizaje/Output/Results.txt")



Alfonso Pérez Rodríguez
Instituto de Investigaciones Marinas
C/ Eduardo Cabello nº 6
C.P. 36208 Vigo (España)
Tlf.- 986231930 Extensión 241
e-mail: fonsilei en iim.csic.es


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