I have the following datasets: id d1 d2 d3 d4 d5 d6 d7 d8 1 100 0.3 0.4 -0.2 -0.3 0.5 0.6 -0.9 -0.8 2 101 0.3 0.4 0.5 0.6 -0.2 -0.4 -0.5 -0.6
what I am trying to accomplish: loop through the rows && do the following: if the values from the columns of the current row >0 then sum_positive=total if the values from the columns of the current row <0 then sum_negtive=total then discard the columns and create a new table id sum_positive sum_negtive 1 100 1.8 -2.2 2 101 1.8 -1.7 I tried the following:but didn't make it work, any inputs would be greatly appreciated. for (i in 1:nrow(myDF)) { + myrow <-myDF[i,] + don't know how to move forward? + } -- View this message in context: http://r.789695.n4.nabble.com/rows-process-in-DF-tp2289378p2289378.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.