lalitha viswanath wrote: > Hi > I am trying to process tabular data as follows: > > Data in the input file is of the form > > genome1 genome2 tree-dist log10escore > > Genome1 and genome2 are alphabetic. > Tree-dist and log10escore are numeric. > > I wish to extract only those rows from this table > where the log10escore is less than -3. > > > data <-read.table(filename); > data$log10escore = data$log10escore[ data$log10escore > < -3];
> library(fortunes) > fortune("dog") Firstly, don't call your matrix 'matrix'. Would you call your dog 'dog'? Anyway, it might clash with the function 'matrix'. -- Barry Rowlingson R-help (October 2004) > I would like to use this pruned list of escores to get > the corresponding genomenames and treedist. ?subset df.sub <- subset(df, log10escore < -3) summary(df.sub) > I did not find anything useful in the FAQs and Notes > on R for this part of the data extraction. > > As I am just beginning programming in R, I would > appreciate your input about this. > > Thanks > L > > > > ____________________________________________________________________________________ > Food fight? Enjoy some healthy debate > > ______________________________________________ > R-help@stat.math.ethz.ch 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. -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ R-help@stat.math.ethz.ch 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.