Displaying 7 results from an estimated 7 matches similar to: "Rpart description of tree groups"
2002 Mar 19
2
Selecting cases from a data frame
My apologies if this is obvious - I assume it is but still can't seem to
make it work.
I've got a data frame acps.df; I want to run an analysis on a subset of
that data frame, defined as the subset for which the value of OGMCAT (a
column in the data frame) is anything OTHER than 9, 11, or 12. So I'd
like to define a new data frame that consists of the same variables as in
acps.df,
2002 Sep 27
2
How to apply SSfpl with binary data
Dear R-help subscribers
Would you tell me how to apply SSfpl with binary data as below?
Unfortunately, there is not the EXAMPLE in help(SSfpl) for binary data but for quantitative data(Chick).
V1: dose
V2: log-transformed dose
V3: response (rate)
V1 V2 V3
1 0.775 -0.2548922 0.1666667
2 5.000 1.6094379 0.8148148
3 10.000 2.3025851 0.5000000
4 20.000 2.9957323
2007 Jul 14
1
How to remove the quote "" in the data frame?
If I do not add "ress" into the data frame "res", there is no quote in the
data frame. However, I add "ress", all column were found the quote.
How to remove it?
If you can delete the quote in the file "ress", that is better.
Thanks.
> ress[1:10]
[1] "ABHO.ABNE" "ABHO.ACBA" "ABHO.ACGI" "ABHO.ACKO"
2002 Feb 07
1
Help with replicating an old SPSS GLM analysis
Greetings.
I'm trying to replicate an analysis I did a few years ago, then in SPSS,
using the SPSS GLM command:
GLM
n_diffpt WITH age_i inc_i join_i work_i educ_i give_i cs_i
eff_i age_a inc_a join_a work_a educ_a give_a cs_a eff_a
/METHOD = SSTYPE(3)
/INTERCEPT = INCLUDE
/PRINT = PARAMETER ETASQ RSSCP GEF
/CRITERIA = ALPHA(.05)
/DESIGN =
age_i*age_a inc_i*inc_a
2010 Nov 19
1
TukeyHSD error
All -
I think I'm being dense, but for the life of me, I can't figure out
why I get error message with the code below.
I have data that looks like
param level perc.surv asin.tran
DO 3 0.6864407 0.9764544
DO 3 0.1250000 0.3613671
DO 3 0.8738739 1.2077299
DO 4 0.4615385 0.7468986
DO 4 0.5691057 0.8547258
DO 4 0.8504673 1.1737517
DO 6 0.5494505 0.8349297
DO
2010 Oct 27
3
Increase R precision
Hello everyone.
When I execute the following in R
> (18-46)/(45-93)
[1] 0.5833333
I get small precision for what I am trying to deal with . Is it possible to
increase the precision for this and for other operations?
For example openoffice calc for this operation returns
0.58333333333333300000
I
I would like to thank you for your help
[[alternative HTML version
2005 May 24
0
output of mars() in package mda; how do I read the pairwise interaction terms from the output?
Hi,
I have run mars() with the default degree=1, and have constructed
splines which are similar to what I would get from Salford System's
MARS. I then use these splines as potential predictors, along with
rpart( ) terminal nodes and other potential predictors, in logistic
regression in SAS. The output of mars() and the splines I created are
shown below (pardon the lengthy output):
>