Data Manipulation

 a <- matrix(letters[1:12], ncol=3)
 a

 write.table(a[,3,drop=FALSE],quote=FALSE,col.names=FALSE,row.names=FALSE)

Thank you Dieter and Rolf,

I have solved the slash Problem, but I still struggling  with the output
files.

I have tried this
 by(AlexETF,AlexETF$Industry,function(a) {filename = paste("C:/ab/",gsub("
","",a$Industry[1]),".txt",sep="")
        print(filename)
write.table(a,file=filename,col.names = FALSE)    
    }
 )

and this

 by(AlexETF,AlexETF$Industry,function(a) {filename = paste("C:/ab/",gsub("
","",a$Industry[1]),".txt",sep="")
        print(filename)
write(as.character(a),file=filename)    
    }
 ) 


I want in each file just the ticker with out any quotations mark.

CMM
FMCN
IPG
MWW

Thanks in advance,
Peter

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