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merge data frames with same column names of different lengths and missing values
2 messages · Steven Lubitz, Dieter Menne
Steven Lubitz <slubitz1 <at> yahoo.com> writes:
Thank you - this is very helpful. However I realized that with my real data
sets (not the example I have here),
I also have different numbers of columns in each data frame. rbind doesn't
seem to like this. Here's a
modified example: x <- data.frame(item1=c(NA,NA,3,4,5), item2=c(1,NA,NA,4,5),
item3=c(NA,2,NA,4,NA), id=1:5)
y <- data.frame(item1=c(NA,2,NA,4,5,6), item2=c(NA,NA,3,4,5,NA), id=1:6) rbind(x,y)
You should add dummy <NA> variables to each partial data frame such that they look the same, and do the rbind later. Dieter