4 messages · culpritNr1, Sarah Goslee, Jorge Ivan Velez
Hello everybody How do you subset a data.frame when your boundaries are a combination of explicit and implicit limits? For example, I need to subset from the fourth (explicit) to the last (implicit) column a data.frame named A. In other languages you would do A[ , 4:]. Would anybody show me the R's way? Thank you, Your culprit
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You can for example use ncol(A) to get the number of columns. Sarah
Hello everybody How do you subset a data.frame when your boundaries are a combination of explicit and implicit limits? For example, I need to subset from the fourth (explicit) to the last (implicit) column a data.frame named A. In other languages you would do A[ , 4:]. Would anybody show me the R's way? Thank you, Your culprit
Sarah Goslee http://www.functionaldiversity.org
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Hi Sarah and Jorge, ncol(). How elegant! Thank you.
Dear culprit Try this: A[ , 4:ncol(A) ] HTH, Jorge On Thu, May 21, 2009 at 12:06 PM, culpritNr1 <ig2ar-saf1 at yahoo.co.uk> wrote:
Hello everybody How do you subset a data.frame when your boundaries are a combination of explicit and implicit limits? For example, I need to subset from the fourth (explicit) to the last (implicit) column a data.frame named A. In other languages you would do A[ , 4:]. Would anybody show me the R's way? Thank you, Your culprit -- View this message in context: http://www.nabble.com/subsetting-of-a-data.frame-tp23655883p23655883.html Sent from the R help mailing list archive at Nabble.com.
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______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
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