Displaying 2 results from an estimated 2 matches for "french_fri".
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french_fries
2011 Jun 09
2
Reshape:cast; error using "..." in formula expression.
Whenever I use "..." in the formula of the cast function, from the reshape
package, I get the following error:
Error in `[.data.frame`(data, , variables, drop = FALSE) :
undefined columns selected
For example:
data(french_fries) #available in the reshape package
> head(french_fries)
time treatment subject rep potato buttery grassy rancid painty
61 1 1 3 1 2.9 0.0 0.0 0.0 5.5
25 1 1 3 2 14.0 0.0 0.0 1.1 0.0
62 1 1 10 1 11.0...
2008 Nov 26
1
Reshape with var as fun.aggregate
I used to be able to use variance for fun.aggregate, but since I
upgraded from R 2.6 to 2.7 (Ubuntu hardy to intrepid), it no longer
works.
> library("reshape")
> data("french_fries")
> ffm <- melt(french_fries, id=1:4, na.rm = TRUE)
> cast(ffm, rep ~ treatment, length)
rep 1 2 3
1 1 579 578 575
2 2 580 579 580
> cast(ffm, rep ~ treatment, mean)
rep 1 2 3
1 1 3.207772 3.177336 3.024522
2 2 3.181207 3.115544 3.277759
>...