Yes, the basic problem is that you forgot to melt the data before
trying to cast it.
Hadley
On Thursday, June 9, 2011, misterbray wrote:
> Dennis, doing some more research, and it seems you actually can include the
> ... term directly in the formula: cf. page 8 of
> http://www.had.co.nz/reshape/
Dennis, doing some more research, and it seems you actually can include the
... term directly in the formula: cf. page 8 of
http://www.had.co.nz/reshape/introduction.pdf (that article also explains
why you might want to do so). It seems including the ... term only works,
however, when your value co
Wow---Dennis, your answer makes me feel good about humanity. Thank you;
you've made my day.
Yours,
Rob
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Hi:
Short answer: use one dot, not three:
> cast(french_fries, . ~ subject)
Using painty as value column. Use the value argument to cast to
override this choice
Aggregation requires fun.aggregate: length used as default
value 3 10 15 16 19 31 51 52 63 78 79 86
1 (all) 54 60 60 60 60 54 60 60
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
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