Merge two columns of a data frame
Hi Abraham, Just take it step by step. Paste the values together, combine them, and assign them to a data.frame column. Like this perhaps: df.1.2.3 <- data.frame(Var1 = c(with(df1, paste(Var1, Var2, Var3)), with(df2, paste(Var1, Var2)), with(df3, paste(Var1, Var2)))) Best, Ista
On Mon, Jun 6, 2011 at 12:22 PM, Abraham Mathew <abraham at thisorthat.com> wrote:
I have the following data:
prefix <- c("cheap", "budget")
roots <- c("car insurance", "auto insurance")
suffix <- c("quote", "quotes")
prefix2 <- c("cheap", "budget")
roots2 <- c("car insurance", "auto insurance")
roots3 <- c("car insurance", "auto insurance")
suffix3 <- c("quote", "quotes")
df1 <- expand.grid(prefix, roots, suffix)
df2 <- expand.grid(prefix2, roots2)
df3 <- expand.grid(roots3, suffix3)
df1; df2; df3
df1, df2, and df3 are seperate data structures with seperate columns for
root, prefix, and suffix.
?Var1 ? ? ? ? ? Var2 ? Var3
1 ?cheap ?car insurance ?quote
2 budget ?car insurance ?quote
3 ?cheap auto insurance ?quote
4 budget auto insurance ?quote
5 ?cheap ?car insurance quotes
6 budget ?car insurance quotes
7 ?cheap auto insurance quotes
8 budget auto insurance quotes
? ?Var1 ? ? ? ? ? Var2
1 ?cheap ?car insurance
2 budget ?car insurance
3 ?cheap auto insurance
4 budget auto insurance
? ? ? ? ? ?Var1 ? Var2
1 ?car insurance ?quote
2 auto insurance ?quote
3 ?car insurance quotes
4 auto insurance quotes
I want to merge df1, df2, and df3, into one data frame column which looks
like.
? ? ? ? ? ? ? ? ? ?Var1
?'cheap ?car insurance ?quote'
?'budget ?car insurance ?quote'
?'cheap auto insurance ?quote'
?'budget auto insurance ?quote'
?'cheap ?car insurance quotes'
?'budget ?car insurance quotes'
?'cheap auto insurance quotes'
?'budget auto insurance quotes'
? ? ? ? 'cheap ?car insurance'
? ? ? ? 'budget ?car insurance'
? ? ? ?'cheap auto insurance'
? ? ? ?'budget auto insurance'
? ? ? ?'car insurance ?quote'
? ? ? ? 'auto insurance ?quote'
? ? ? ?'car insurance quotes'
? ? ? ?'auto insurance quotes'
Help!
WebRep
Overall rating
? ? ? ?[[alternative HTML version deleted]]
______________________________________________ R-help at 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.
Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org