Hi!

Would

df<- table2[grep("ID",table2[,1]), c(7,9,11,13,15)]

do what you expect?

Ivan



Le 10/21/2010 15:42, amb1networks a écrit :
I'm new to R.
I'm extracting important columns from single table using following code:

File2<-"file.txt"
table2<- read.delim(File2, skip=19, sep=";", header=F, na.strings=NA,
fill=T)
#extracting column 7 where rows match "ID"
col1<- table2[grep("ID", table2[,1]),7]
#similarly extracting column 9,11,13,15
col2<- table2[grep("ID", table2[,1]),9]
col3<- table2[grep("ID", table2[,1]),11]
col4<- table2[grep("ID", table2[,1]),13]
col5<- table2[grep("ID", table2[,1]),15]

there are also some other single columns I extracted from other file. Now I
want to combine all these single columns into a single table with
corresponding headers. Any hint on how that can be done? Thanks.

i.e file3.txt
col1 col2 col3 col4 col5

Regards,

Anand



Now how can I combine


--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calan...@uni-hamburg.de

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