On Aug 21, 2009, at 11:02 AM, Noah Silverman wrote:
Hi,
I've come across a strange error when using the lrm.fit function and
the subsequent predict function.
The model is created very quickly and can be verified by printing it
on the console. Everything looks good. (In fact, the performance
measures are rather nice.)
Then, I want to use the model to predict some values. I get the
following error: "fit was not created by a Design library fitting
function"
This is the exact same data and process I'm using with the lrm
function. I thought I'd try lrm.fit to see if the results where
better.
Since the model WAS created by a function of the Design library, I
can't see how it would then be rejected.
Below is the session transcript:
<snip>
Noah, you seem to have missed Frank's reply to your original post
about 3 hours ago:
https://stat.ethz.ch/pipermail/r-help/2009-August/208940.html
HTH,
Marc Schwartz
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