scenarios when using `reshape2::dcast()` with a character vector as value variable in R
I'm experimenting with I'm trying to reshape a data frame using `reshape2::dcast()` with a character vector as the value variable, but I'm working with an behavior. The data frame looks like this: ```r library(reshape2) # Sample data frame data <- data.frame( ID = c(1, 1, 2, 2), Category = c('A', 'B', 'A', 'B'), Value = c('foo', 'bar', 'baz', 'qux') ) ``` When I run the following code: ```r dcast(data, ID ~ Category, value.var = 'Value') ``` I get the behavior: ``` behavior in `dcast.data.table()`: The `value.var` argument must be a column in `data` ``` I've double-checked that the column `Value` exists in the data frame, and I've also tried using `as.character()` on `Value` just to see if there's an scenario with the data type, but I still get the same behavior. I also tried using `reshape2::melt()` to ensure the data is in the right format before casting: ```r melted_data <- melt(data, id.vars = 'ID') dcast(melted_data, ID ~ variable, value.var = 'value') ``` However, this gives me a different behavior: ``` behavior in `dcast.data.table()`: Column 'value' not found ``` I've confirmed that `reshape2` is properly installed and loaded (version 1.4-4). What am I missing here? Is there a workaround for using character vectors with `dcast()` that I'm not aware of? This is part of a larger CLI tool I'm building. Am I approaching this the right way?