Re: [R] get is.na !is.na count of various combinations of columns

Hi, I just noticed that you also have all is.na() or !is.na() subsets.  To do that: mydatatest - structure(list(CaseID = structure(1:8, .Label = c(1605928, 1605943, 1605945, 1605947, 1605949, 1605951, 1605952, 1605953), class = factor), Structure = structure(c(1L, 1L, 3L, 2L, 2L, 3L, 3L, 4L),

[R] get is.na !is.na count of various combinations of columns

I'm trying to count the number of combinations of columns containing data not containing data as described below. Im not sure how to do this in R and need some help. #get TRUE/FALSE count of various combinations of columns per CaseID or per Structure mydatatest - data.frame (CaseID = c(1605928,

Re: [R] get is.na !is.na count of various combinations of columns

Hi, May be this helps: res -  lapply(seq(length(vec1)-1),function(i) {x1 - as.data.frame(combn(vec1,i),stringsAsFactors=FALSE); lapply(x1, function(x) {indx - vec1 %in% x; nisna - paste(paste0(!is.na,(, vec1[!indx],)),collapse= );isna - paste(paste0(is.na,(, vec1[indx],)),collapse=

Re: [R] get is.na !is.na count of various combinations of columns

If you want to identify the combination of columns: names1 -  unlist(lapply(seq(length(vec1)-1),function(i) {x1 - as.data.frame(combn(vec1,i),stringsAsFactors=FALSE); unlist(lapply(x1, function(x) {indx - vec1 %in% x; paste(paste(paste0(!is.na,(, vec1[!indx],)),collapse= ),