On Jun 28, 2010, at 10:58 AM, Martin Spindler wrote:
Hello,
currently I am estimating an ordered probit model with the function
polr
(MASS package).
Is there a simple way to obtain values for the prediction of the index
function ($X*\hat{\beta}$)?
(E..g. in the GLM function there is the linear.prediction value for
this
purpose).
Read the help page:
"There are methods for the standard model-fitting functions, including
predict, ...."
If not, is there another function / package where this feature is
implemented?
Even though polr has predict, you can also get a proportional odds
model in the rms package (and I would not be surprised if a search
turned up more options.
--
David.
Thank you very much for your answer in advance!
Best,
Martin
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