Insert row in specific location between data frames
On Jul 1, 2012, at 1:33 AM, pigpigmeow wrote:
i'm not success to insert row in specific location and merge another file I have a question and I feel confused about the usage of "rbind", "cbind" and "data.frame) data 1:
predict_SO2_a
predict_SO2_a 1 39.793231 2 30.252578 3 32.467584 4 31.941509 5 27.908320 6 11.594137 7 9.368125 8 12.319093 9 11.558811 10 NA 11 11.211306 12 12.400342 13 12.393146 14 13.256160 15 10.709600 16 9.966334 17 28.850652 18 10.024405 data 2: predict_SO2_b [1] 16.931975 18.286223 11.454404 6.256828 7.951174 5.364070 9.675208 7.328439 9.957388 14.603543 14.605044 8.681327 9.450510 10.628049 13.178781 11.757256 [17] 23.820308 when I used "merge" and combine data1 and data2, it showed the error Error in rbind(deparse.level, ...) : replacement has length zero. I found the display of these two data are different. I'm confused
Yes, you are. The 'merge' operation requires that the two data.frames have some sort of identifier that labels the groups to be merged. You should describe what you are attempting rather than showing failed efforts at doing it.
David Winsemius, MD West Hartford, CT