[R] Updating a list.

[rkevinburton at charter.net]

Since this didn't work:

> m2007$DayOfYear <- factor(m2008$DayOfYear, levels = 1:365)
Error in `$<-.data.frame`(`*tmp*`, "DayOfYear", value = c(1L, 1L, 1L,  : 
  replacement has 432267 rows, data has 1592009

Perhaps I need to clarify how the m2007 object was generated.

t2007 <- read.csv("Total2007.dat", header = TRUE)
m2007 <- melt(t2007, id.var=c("DayOfYear","Category","SubCategory","Sku"), measure.var=c("Quantity"))

Kevin


---- hadley wickham <h.wickham at gmail.com> wrote: 
> 
> Try this:
> 
> m2008$DayOfYear <- factor(m2008$DayOfYear, levels = 1:365)
> r2007 <- cast(m2008, DayOfYear ~ variable | Sku, sum, fill = 0)
> 
> Hadley
> 
> -- 
> http://had.co.nz/