I have a series of strings and I am trying to find all combinations and then
assign 1 or 0 to them based
on whether they contain the words car or budged. I want the data to look
like:
car budget
cheap car insurance quote 1 0
budget car insurance quote 1 1
cheap auto insurance quote 0 0
budget auto insurance quote 0 1
cheap car insurance quotes 1 0
budget car insurance quotes 1 0
cheap auto insurance quotes 0 0
budget auto insurance quotes 0 1
I've created all the possible values using the following commands,
but I wanted to know if I could automate the process whereby it would
create the string combinations and assign binary values appropriately.
roots <- c("car insurance", "auto insurance")
prefix <- c("cheap", "budget")
suffix <- c("quote", "quotes")
d <- do.call(paste, expand.grid(prefix, roots, suffix))
df = data.frame(keyword=c(d))
df
I realize that this process can be done in two separate stages with the
stringr package,
but I'm trying to just get the thing done in one.
Do I need to combine both the functions from above and the stringr package
inside
a function? Help!
I'm using R 2.13 on Ubuntu 10.10
Abraham
WebRep
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