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...species site1 site2 site3 site4 sp.1 2 0 0 0 sp.2 3 0 1 0 sp.4 0 0 6 0 #extract data.frame of rowSums with x[,2:4] != 0 subset (x, apply (x,1,function(row) all(rowSums(x[,2:4] !=0)) ## don't work Thanks in advance. -- Rog?rio R. Silva MZUSP http://www.mz.usp.br Linux/Debian User # 354364 Linux counter http://counter.li.org

...levels), and would like to make levels with different number of replications. Does anyone know how to generate different number of replications in each level? Something like: [1] Site1 Site1 Site1 Site1 Site1 Site1 Site1 [8] Site2 Site2 Site2 Site2 Site2 Thanks in advance -- Rog?rio R. Silva MZUSP http://www.mz.usp.br Linux/Debian User # 354364 Linux counter http://counter.li.org

...arGuilda9) write(Var,file="LAU_Var_01.txt", ncol=9) Every time I want to repeat this I have to change the name of *.txt file manually. How can I automate this, so it could be done for all the *.txt files (1000) I have to generate. Thanks in advance, Rog??rio -- Rog??rio R. Silva MZUSP http://www.mz.usp.br Linux User #354364 Linux counter http://counter.li.org

...pply(Guilda8,2,sum)) Resul.Guilda9<-sum(apply(Guilda9,2,sum)) Guild.Richness<-cbind(Resul.Guilda1,Resul.Guilda2,Resul.Guilda3,Resul.Guilda4,Resul.Guilda5,Resul.Guilda6,Resul.Guilda7,Resul.Guilda8,Resul.Guilda9) write(Guild.Richness, file = sprintf(file, i), ncol = 9) } -- Rog??rio R. Silva MZUSP http://www.mz.usp.br Linux User #354364 Linux counter http://counter.li.org

...inter driver before running this program.". After installing some drivers from HP, EPSON - some successfully :-) - it continues to happen. How can I tell this program that it should find a printer? I really don't need a to print any thing with this program. Tanks. -- Bodo Hasso Dietz MZUSP http://www.mz.usp.br Linux User #225262 Linux counter http://counter.li.org