Hi, A reproducible example would have been nice...
Here is one: vect <- c(rep("| A010 |",3), rep("| A020 |",5), rep("| A021 |",2)) df <- data.frame(a=vect, b=rnorm(10), d=rnorm(10)) df[grep(pattern="A02", df$a), ] HTH, Ivan Le 11/17/2010 10:16, Joel a écrit :
Hi I got an table that contains this colum and i wonder if there is any nice way to extract all rows that contains all dose that start with A02, so all the rows that have A020 and A021 etc etc... | A010 | | A010 | | A010 | | A020 | | A020 | | A020 | | A020 | | A020 | | A021 | | A021 | Thx for your help //Joel
-- 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 ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.