Displaying 2 results from an estimated 2 matches for "fengjin".
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2009 Apr 17
1
Monotone Transformation
Hi, I am trying to use R to mimic what I did in SAS.
proc transreg data=x ;
model identity(GSI)=monotone(group1);
output out=d2 pprefix=M;
run;
Accroding to SAS documentation, the MONOTONE transfomation algorithm comes
from (Kruskal 1964, secondary approach to ties). I have tried ace. it does
provide some kind of monotone transformation, but it is not what I expected.
Here is how
2009 Apr 01
3
Fit unequal variance model in R
I'am trying to develop some code if R, which would correspond to what I did in SAS.
The data look like:
Treatment Replicate group1 GSI
Control A 1 0.81301
Control B 1 1.06061
Control C 1 1.26350
Control D 1 0.93284
Low A 2 0.79359
Low B