Dear all,
I have used nlsLM in minpack.lm package for fitting a model using 22358
observations. Now I would like to compute PRESS residuals and have been
trying it using qpcR package but it does not seem to work (I have fitted my
data with a lm model and used qpcR PRESS and it worked fine).
The message I get is:
Error in as.data.frame.default(x[[i]], optional = TRUE) :
cannot coerce class ""formula"" to a data.frame
And also, with a different and smaller database, I got this message:
.Error in PRESS.res[i] <- DATA[i, RESP.pos] - y.hat :
replacement has length zero
Can anyone please help me?
Best regards,
Francisco Goes
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