Hello everyone,I am having a difficult time understanding what commands are used to add and remove elements froma matrix or data frame.For ex ample if I want to remove element=[1,50] or elements [1,50:63] or elements [2:4,20:35]from a matrix and replace with NA or any number what command must I use to remove the element and then to replace the element..Must I use two commands or can I use one command to replace the element I read the section in the documentation on index arrays.Do I have to make index arrays to replace elements or is there an easier way? Any help would be appreciated PAUL [[alternative HTML version deleted]]
______________________________________________ R-help@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.