R help - Jul 2008 - error on predict

Hi,

i have this glm:
shuttle.glm.test <-
glm(cbind(r,m-r)~temperature,family=binomial,data=shuttle)

and when i try to find a probability of var r (with temperature=31 and
pressure=200):

predict(shuttle.glm.test,data.frame(temperatura=31,pressure=200),type="response",se=T)


i have this error:

Warning message:
'newdata' had 1 rows but variable(s) found have 23 rows

why??


thanks.


Michele

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