
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+s789695n4574888h5@n4.nabble.com 
> To: ritacarreira@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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