There are two data frames x, y . Id like to copy row with number J from X into Y. Something like
Y[1,] <- X[j,]
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Do x and y have the same structure (number of columns, data types)? – Sophia Apr 04 '12 at 15:19
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Yes, absolutely the same type. – David Kakauridze Apr 04 '12 at 15:23
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Justin, the question is how to do it in R. I'm a newbie in R (also in programing), so sorry for a such dumb question :) – David Kakauridze Apr 04 '12 at 15:27
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Your example happens to pretty much answer your question. (Try it out!)
If, instead of replacing a row in the target data.frame, you want to add a row to it, try rbind() instead:
X <- data.frame(name=LETTERS[1:3], value=1:3, stringsAsFactors=FALSE)
Y <- data.frame(name=letters[1:3], value=rnorm(3), stringsAsFactors=FALSE)
X[1,] <- Y[1,]
X <- rbind(X, Y[3,])
Josh O'Brien
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