[R] help please: predict error code

[Peter Ehlers]

I'm sure there are people willing to help you, but you
will have to be a little more forthcoming with information.
I don't know how many predict functions there are in the
2000-plus packages on CRAN, but there surely are quite a
few. Perhaps you could let us know what you're using
before you get to your predict call. Reproducible code
would be best.

  -Peter Ehlers

On 2010-04-24 12:45, Brittany Hall wrote:
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> Hello,
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> I am trying to calculate predicted values derived from one dataset into a hypothetical dataset. I tried this line of code:
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> graphdata$fmgpredvalues<- predict(Acs250.3.4, graphdata)
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> and received the following error message:
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> ERROR: ZXend[1], drop = FALSE] %*%lmeFit$beta
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> I have made sure all variable names are the same between the two datasets and all factors are appropriately labeled.
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> I appreciate any insight.
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> Thanks,
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> Brittany
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> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Ehlers
University of Calgary