Re: [R] Searching for the first two characters of a string

On Nov 21, 2011, at 10:00 AM, aclinard wrote: Remko, Thank you for your reply. When I try your code, I'm getting the following error: acts10 <-read.table('RailAccident10.txt',sep=',',header=T) acts11 <- acts10[acts10$ACCDMG > 10^5,] h.test <- substr(acts11$CAUSE,1,1) h.data <- acts11[h.te

Re: [R] Searching for the first two characters of a string

Remko, Thank you for your reply. When I try your code, I'm getting the following error: acts10 <-read.table('RailAccident10.txt',sep=',',header=T) > acts11 <- acts10[acts10$ACCDMG > 10^5,] > h.test <- substr(acts11$CAUSE,1,1) > h.data <- acts11[h.test == 'H'] Error in `[.data.frame`(acts11, h.tes

Re: [R] Searching for the first two characters of a string

dfr <- data.frame(txt= c("abab","ghghg","ththt","dfdfdf"), yvar=1:4) ind <- substr(dfr$txt,1,2) dfr[ind == "ab",] greetings, Remko -- View this message in context: http://r.789695.n4.nabble.com/Searching-for-the-first-two-characters-of-a-string-tp4089862p4090042.html Sent from the R help ma

[R] Searching for the first two characters of a string

Hi, I'm trying to search the data in a column for the first two characters, and return all rows that match the search criteria. Any suggestions? Thanx -- View this message in context: http://r.789695.n4.nabble.com/Searching-for-the-first-two-characters-of-a-string-tp4089862p4089862.html Sent