Hi R helpers!
I'm still a bit ( alot) confused by the use of "inverseTrans" and "ytype" in areg.boot
(Hmisc): What I want to do seems very simple, but I do not get the result I want:
plot the predicted values in the original scale. (I did not understand the
documentation, sorry!)
for instance the following code
f<-areg.boot(Pe[here]~monotone(t[here])+monotone(v[here])+I(Pa[here]-Pm[here])+......,B=100)
f.origScale<-Function(f,ytype="inverse") # works up to here
OK, back to original Pe scale
Now if use predict() to make prediction for given input values , how do I transform
the result back into the original response scale?
(in the documentation:
A 'predict' method computes predicted
values on the original or transformed response scale, or a matrix
of transformed predictors)
so I tried
y.predicted<-predict(f,data2predict, type='inverse') #result is in transformed scale
y.predicted<-predict(f,data2predict, type='fitted',scale="original")....without success
(I did not find the documentation for the predict method of areg.boot)
as the inverse transformation of response obtained by areg.boot is not analytical, I
do not see how I can use inverseTrans
.
Thank for any help
Anne
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Anne Piotet
Tel: +41 79 359 83 32 (mobile)
Email: [EMAIL PROTECTED]
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M-TD Modelling and Technology Development
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