I want to delete a row from a data frame XYZ where A == "TRUE". Let's assume there are five variables in this data frame XYZ. My deletion is based on the TRUE vs. FALSE value under variable A. How do I do this? Thanks! My current code: for (i in 1:length(XYZ$A)) if (XYZ$A == "FALSE") XYZ<-XYZ else XYZ<- XYZ[-i,] Error message is: Error in if (XYZ$A == "FALSE") XYZ<-XYZ else XYZ<- XYZ[-i, : missing value where TRUE/FALSE needed Please help!! -- View this message in context: http://www.nabble.com/How-do-I-delete-a-row-from-a-data-frame-when-varA-%3D%3D-%22TRUE%22-tp24599876p24599876.html Sent from the R help mailing list archive at Nabble.com.
Daniel Malter
2009-Jul-22 05:13 UTC
[R] How do I delete a row from a data frame when varA == "TRUE"
XYZ=XYZ[XYZ$A==TRUE , ] should do. Note that this specific command overwrites your XYZ dataframe. If you want to keep XYZ, you will want to name the newly created frame differently. HTH, Daniel ------------------------- cuncta stricte discussurus ------------------------- -----Urspr?ngliche Nachricht----- Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im Auftrag von kxk Gesendet: Wednesday, July 22, 2009 12:24 AM An: r-help at r-project.org Betreff: [R] How do I delete a row from a data frame when varA == "TRUE" I want to delete a row from a data frame XYZ where A == "TRUE". Let's assume there are five variables in this data frame XYZ. My deletion is based on the TRUE vs. FALSE value under variable A. How do I do this? Thanks! My current code: for (i in 1:length(XYZ$A)) if (XYZ$A == "FALSE") XYZ<-XYZ else XYZ<- XYZ[-i,] Error message is: Error in if (XYZ$A == "FALSE") XYZ<-XYZ else XYZ<- XYZ[-i, : missing value where TRUE/FALSE needed Please help!! -- View this message in context: http://www.nabble.com/How-do-I-delete-a-row-from-a-data-frame-when-varA-%3D% 3D-%22TRUE%22-tp24599876p24599876.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.