Yes, Rui, it did work. Thank you very much for your help. Or maybe I should say
"muito obrigada!"
Rita
=====================================
"If you think education is expensive, try ignorance."--Derek Bok
________________________________
> Date: Fri, 20 Apr 2012 11:15:06 -0700
> From: ml-node+s789695n457488...@n4.nabble.com
> To: ritacarre...@hotmail.com
> Subject: Re: pasting a formula string with double quotes in it
>
> Hello,
>
> StellathePug wrote
> Hello everyone,
> I have tried several ways of doing this and searched the documentation
> and help lists and I have been unable to find an answer or even whether
> it is possible to do it. I am pasting together a formula and I need to
> insert double quotes around the strings. Here's an example:
>
> location <- c("AL", "AK", "MA", "PA")
> v=2
> test <- cbind(
> " <- cbind(df$DATE[df$LOCATION %in% c(",
> location[v],
> ")], df$WTD.AVG.PRICE[df$LOCATION %in% c(",
> location[v],
> ")])")
>
> test <- paste(test, collapse="")
> test
>
> Solution:
> [1] " <- cbind(df$DATE[df$LOCATION %in% c(AK)],
> df$WTD.AVG.PRICE[df$LOCATION %in% c(AK)])"
>
> This does not produce an error message but it is obviously wrong
> because I need double quotes around AK, i.e.,
> " <- cbind(df$DATE[df$LOCATION %in% c("AK")],
> df$WTD.AVG.PRICE[df$LOCATION %in% c("AK")])"
> And obviously, I gave R no indication whatsoever to use double quotes.
>
>
> If I use
> test <- paste(test, collapse=""")
> it does not work, which makes sense because the second double quote
> closes the first and the third is left an orphan.
>
> Anyone have any ideas?
>
[[elided Hotmail spam]]
> Rita
> Use single quotes instead, they don't close the double quotes and, for
> this, the result is the same.
> Look at the end/beginning of the lines before/after location[v]
>
> test2 <- cbind(
> " <- cbind(df$DATE[df$LOCATION %in% c('",
> location[v],
> "')], df$WTD.AVG.PRICE[df$LOCATION %in% c('",
> location[v],
> "')])")
> test2 <- paste(test2, collapse="")
> test2
>
> Hope this helps,
>
> Rui Barradas
>
>
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