William Dunlap wrote
>>> eval(parse(text=paste("dataset",IVcat[k],sep="$")))<-relevel(eval(parse(text=paste("dataset",IVcat[k],sep="$"))),ref="online")
>>This code returns the following error:
>>Error in eval(parse(text = paste("dataset", IVcat[k], sep = "$"))) <-
>>relevel(eval(parse(text = paste("dataset", :
>> target of assignment expands to non-language object
>
> Replace
> eval(parse(text=paste("dataset", IVcat[k], sep="$")))
> with
> dataset[[ IVcat[k] ]]
> everywhere.
Thanks so much for the response, Bill - this was very helpful. I feel silly
for not thinking of this myself - I had originally started with this
approach, but abandoned it because for some inexplicable reason it seemed to
call the wrong dataset column (which it did again when I substituted your
code for mine). However, I figured out a modification that did work:
apparently I needed to convert the output of IVcat[k] to a string, like
this, and then the code ran fine:
dataset[[ toString(IVcat[k]) ]]
Thanks again!
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