Displaying 5 results from an estimated 5 matches for "fxb".
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2008 Feb 10
1
Using 'sapply' and 'by' in one function
...a simple (trivial) example of what I'd like to do:
new <- data.frame(Outcome.1=rnorm(10),Outcome.2=rnorm(10),sex=rep(0:1,5),Pred=rnorm(10))
fxa <- function(x,data) { lm(x~Pred,data=data)$coef }
sapply(new[,1:2],fxa,new) # this yields coefficients for the
predictor in separate models
fxb <- function(x) {lm(Outcome.1~Pred,da=x)$coef};
by(new,new$sex,fxb) #yields the coefficient for Outcome.1 for each sex
## I'd like to be able to combine 'sapply' and 'by' to be able to get
the regression coefficients for Outome.1 and Outcome.2 by each sex,
rather than runni...
2011 Oct 17
1
Build 64-bit R Solaris 10 Sparc
...4-bit R on Solaris 10 Sparc with the Oracle Studio Compiler suite? Could anyone start give me a clue. I have tried to no avail.
Thanks,
Nynese
Nynese Tinsley, BSEE, MSCIS
UNIX Systems Analyst
Harvard School of Public Health
Center for Biostatistics in AIDS Research
651 Huntington Ave, FXB 614
Boston, MA 02115
617-432-3244 office#
617-432-2843 fax#
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2003 Jan 21
1
rpart help
...n rpart?
Also, do you happen to know the parameter options which
will make rpart and tree act the same. I am wondering if
this is possible since I have no missing data.
Thank you for any help you can offer,
Doug Kitch
Doug Kitch, M.S.
Statistician/COMP RAC
SDAC/Harvard School of Public Health
FXB Bldg. Room 504
651 Huntington Avenue
Boston, MA 02115
Phone: (617) 432-3281
FAX: (617) 432-3163
Email: dkitch at sdac.harvard.edu
2011 Aug 03
0
Help Needed in attempting to install 64-bit R!
...tests po; do \
(cd ${d} && /usr/ccs/bin/make R) || exit 1; \
done
make: Fatal error: Command failed for target `R'
Thanks,
Nynese
Nynese Tinsley, BSEE, MSCIS
UNIX Systems Analyst
Harvard School of Public Health
Center for Biostatistics in AIDS Research
651 Huntington Ave, FXB 614
Boston, MA 02115
617-432-3244 office#
617-432-2843 fax#
2008 Feb 11
0
Testing for differecnes between groups, need help to find the right test in R. (Kes Knave)
...a simple (trivial) example of what I'd like to do:
new <-
data.frame(Outcome.1=rnorm(10),Outcome.2=rnorm(10),sex=rep(0:1,5),Pred=r
norm(10))
fxa <- function(x,data) { lm(x~Pred,data=data)$coef }
sapply(new[,1:2],fxa,new) # this yields coefficients for the
predictor in separate models
fxb <- function(x) {lm(Outcome.1~Pred,da=x)$coef};
by(new,new$sex,fxb) #yields the coefficient for Outcome.1 for each sex
## I'd like to be able to combine 'sapply' and 'by' to be able to get
the regression coefficients for Outome.1 and Outcome.2 by each sex,
rather than runni...