R help - Dec 2011 - Convert a string to a variable name

Hello,

I am trying to ask the user for which column their data is in, and then use
this information in a function.  So far I have:

data <- read.csv(file.choose(), header=TRUE)
col <- (winDialogString("Which column contains your
data?",""))

and I want to be able to reference such as:

meas <- data$col

and use this meas in the function.

However, I can't seem to get this to work because the input is read into a
string, and I can't figure out how to convert this string to the vector
name that I want.

Any help is appreciated.

	[[alternative HTML version deleted]]

On 07.12.2011 20:15, Jeffrey Fuerte wrote:
> Hello,
>
> I am trying to ask the user for which column their data is in, and then use
> this information in a function.  So far I have:
>
> data<- read.csv(file.choose(), header=TRUE)
> col<- (winDialogString("Which column contains your
data?",""))
>
> and I want to be able to reference such as:
>
> meas<- data$col
meas <- data[[col]]

Uwe Ligges


>
> and use this meas in the function.
>
> However, I can't seem to get this to work because the input is read
into a
> string, and I can't figure out how to convert this string to the vector
> name that I want.
>
> Any help is appreciated.
>
> 	[[alternative HTML version deleted]]
>
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