Wuming, which(a) will identify the TRUE values and sum(a) will tell you how many TRUE values there are.
David -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wuming Gong Sent: 29 March 2006 18:21 To: [email protected] Subject: [R] Sub-vector * Please Note : This message was received from the Internet * _____________________________________________________________ Dear list, Given a vector of logical values, say >a <- c(TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,TRUE) Are there any R functions that can tell whether there are two or more "TRUE" in a row in this vector? Thanks, Wuming ______________________________________________ [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 __________________________________________________________________ This message might contain confidential information. If it has been sent to you in error please do not forward it or copy it or act upon its contents, but report it to [EMAIL PROTECTED] Schroders has the right lawfully to record, monitor and inspect messages between its employees and any third party. Your messages shall be subject to such lawful supervision as Schroders deems to be necessary in order to protect its information, its interests and its reputation. Schroders prohibits and takes steps to prevent its information systems from being used to view, store or forward offensive or discriminatory material. If this message contains such material please report it to [EMAIL PROTECTED] Schroders does not normally accept or offer business instructions via email unless prior agreements are in place. Any action that you might take upon this message might be at your own risk. Schroder Investment Management Limited 31 Gresham Street London EC2V 7QA Authorised and regulated by the Financial Services Authority. Schroder Investment Management Limited is entered on the FSA register under the following register number: 119348 Registered Office 31 Gresham Street London EC2V 7QA Registered number 1893220 VAT registration number 243 8687 30 ______________________________________________ [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
