[R] How to delete rows

From: Michael Graber <michael_graber_at_gmx.de>
Date: Thu 28 Jul 2005 - 02:43:52 EST


Dear R-users,

I am very new to R, so maybe my question is very easy to answer. I have the following table:
TAB1<-data.frame(Name,Number), "Name" and "Number" are all character strings,
it looks like this:

Name Number

ab 2

ab 2

NA 15

NA 15

NA 15

cd 3

ef 1

NA 15

NA 15

gh 15

gh 15

I want to delete all the rows which begin with "NA" and all the rows where names are duplicates (for example the second row).
I have tried this, but I only get numbers:

 for (i in 1:ZeileMax ) {if ( TAB1[[1]] [i] != "NA" ) {cat(TAB1[[1]][i],file = "Name.txt",fill= TRUE,append = TRUE ,sep = "");cat(TAB1[[2]][i], file="Number.txt", fill=TRUE,append=TRUE, sep="")}} Name<-readLines("Name.txt")
Number<-readLines("Number.txt")
TAB<-data.frame(Name,Number)  

Thanks in advance,  

Michael Graber



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