On 12/07/2007 10:10 PM, Deepayan Sarkar wrote:
> On 7/12/07, Gabor Grothendieck <[EMAIL PROTECTED]> wrote:
>> You can do this:
>>
>>> [EMAIL PROTECTED]
>> [1] "\na <- 1; b <- 2**2\na + b\n"
>>
>>> # or this
>>> as.character(foo)
>> [1] "a <- 1" "b <- 2^2" "a + b"
>
> Neither of which is what I w
Hi all,
This is my first post to the developers list. As I understand it,
aggregate() currently repeats a function across cells in a dataframe
but is only able to handle functions with single value returns.
Aggregate() also lacks the ability to retain the names given to the
returned value.
Note that summaryBy in the doBy package can also do that.
library(doBy)
DF <- data.frame(z, A = Ind$A, B = Ind$B)
summaryBy(z ~ A + B, DF, FUN = summary)
summaryBy(z ~ A + B, DF, FUN = summary2)
On 7/13/07, Mike Lawrence <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> This is my first post to the develo
bugfix already :P prior version fails when there is only one factor
in Ind. This version also might be faster as I avoid using aggregate
to create the dummy frame.
agg=function(z,Ind,FUN,...){
FUN.out=by(z,Ind,FUN,...)
num.cells=length(FUN.out)
num.values=length(FUN.out
Note that it does not work in this case:
> aggregate(CO2[4:5], CO2[1:2], mean)
PlantType conc uptake
1Qn1 Quebec 435 33.22857
2Qn2 Quebec 435 35.15714
3Qn3 Quebec 435 37.61429
4Qc1 Quebec 435 29.97143
5Qc3 Quebec 435 32.58571
6Qc2
I would like to suggest a replacement for the curent function
sweep based on the two previous suggestions posted at
https://stat.ethz.ch/pipermail/r-help/2005-June/073989.html
and
http://wiki.r-project.org/rwiki/doku.php?id=rdoc:base:sweep
with some extensions.
My suggestion is to use one of t
