Dear members, I want to create a sequence of numbers for the multiple records of individual animal in my dataset. The SAS code below will do the trick, but I want to learn to do it in R. Can anyone help ?
data ht&ssn; set ht&ssn; by anml_key; if first.anml_key then do; seq_ht_rslt=0; end; seq_ht_rslt+1; Thanks in advance. Stella ___________________________________________________________________________ This message, including attachments, is confidential. If you are not the intended recipient, please contact us as soon as possible and then destroy the message. Do not copy, disclose or use the contents in any way. The recipient should check this email and any attachments for viruses and other defects. Livestock Improvement Corporation Limited and any of its subsidiaries and associates are not responsible for the consequences of any virus, data corruption, interception or unauthorised amendments to this email. Because of the many uncertainties of email transmission we cannot guarantee that a reply to this email will be received even if correctly sent. Unless specifically stated to the contrary, this email does not designate an information system for the purposes of section 11(a) of the New Zealand Electronic Transactions Act 2002. ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html