Dear all,
When I use aggregate function as:
attach(warpbreaks)
aggregate(warpbreaks[, 1], list(wool = wool, tension = tension), sum)
The results are right but I get a warning message:
number of items to replace is not a multiple of replacement length.
BTW: I use R version 2.4.1 in Ubuntu 7.04.
Xingwang Ye wrote:
Dear all,
When I use aggregate function as:
attach(warpbreaks)
aggregate(warpbreaks[, 1], list(wool = wool, tension = tension), sum)
The results are right but I get a warning message:
number of items to replace is not a multiple of replacement length.
BTW: I use R
Thank you for sharing your experience.
The example data I used is from help for by function, so every one
could have a try.
After using $, the warning message disappeared:
aggregate(warbreaks[,1], list(wool = warbreaks$wool,
tension=warbreaks$tension),sum)
Another approach may be to restart
If I use your code, I don't get the error.
Maybe you stripped your code to create a minimal, self-contained,
reproducible code?
Perhaps in your original code, you store the result of the aggragate
function in a dataframe of a different size than the results?
Bart
felix-36 wrote:
Dear
