[R] Regex question

Dear R useRs, is there any simple, build in function to match specific regular expression in data file and write it to a vector. I have the following text file: *NEW RECORD *ID-001 *AB-text *NEW RECORD *ID-002 *AB-text etc. Now I have to match all ID fields and print them to a vector: 001

Re: [R] Regex question

Is this what you want? result - readLines('/tempxx.txt') result [1] *NEW RECORD *ID-001 *AB-text*NEW RECORD [6] *ID-002 *AB-text result - result[grep('^.ID-', result)] # select only ID lines result [1] *ID-001 *ID-002 sub('^.ID-', '', result) [1] 001 002 On

Re: [R] Regex question

jim holtman wrote: Is this what you want? result - readLines('/tempxx.txt') result [1] *NEW RECORD *ID-001 *AB-text*NEW RECORD [6] *ID-002 *AB-text result - result[grep('^.ID-', result)] # select only ID lines result [1] *ID-001 *ID-002 sub('^.ID-', '',