Re: [R] Converting a character vector to numeric

2013-03-23 Thread David Winsemius
On Mar 23, 2013, at 12:51 PM, Christofer Bogaso wrote: > Hello again, > > Let say I have following vector: > > Vec <- c("0.0365780769", "(1.09738648244378)", "(0.812507787221523)", > "0.5778069963", "(0.452456601362355)", "-1.8900812605", "-1.8716093762", > "0.0055217041", "-0.4769192333", "-2.

Re: [R] Converting a character vector to numeric

2013-03-23 Thread Bert Gunter
Use gsub to convert the parenthesized expressions. newvec <- gsub("\\((.+)\\)", "-\\1", Vec) If you have to do much of this, you should learn about regular expressions -- there are many good tutorials on the Web -- and stop asking for help here. Cheers, Bert On Sat, Mar 23, 2013 at 12:51 PM, Ch

Re: [R] Converting a character vector to numeric

2013-03-23 Thread arun
Hi, Try this: Vec[grepl("\\(",Vec)]<-paste0("-",gsub("[()]","",Vec[grepl("\\(",Vec)])) as.numeric(Vec) # [1]  0.036578077 -1.097386482 -0.812507787  0.577806996 -0.452456601  #[6] -1.890081260 -1.871609376  0.005521704 -0.476919233 -2.413301888 A.K. - Original Message - From: Christofer

Re: [R] Converting a character vector to numeric

2013-03-23 Thread Rui Barradas
Hello, Try the following. It issues a warning because of the second as.numeric. (It still has the parenthesis.) ifelse(grepl("\\(", Vec), -as.numeric(sub("\\((.*)\\)", "\\1", Vec)), as.numeric(Vec)) Hope this helps, Rui Barradas Em 23-03-2013 19:51, Christofer Bogaso escreveu: Hello ag