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756828
2011 Sep 19
1
"could not find function" after import
...MESPACE:
import(sandwich)
In the code itself is a call to vcovHC:
Vhat <- vcovHC(mod, type="HC0")
I have sandwich version 2.2-7 installed.
When I run R CMD check on my package, I get the following error during
checking of examples:
* using R Under development (unstable) (2011-08-29 r56828)
* using platform: x86_64-apple-darwin9.8.0 (64-bit)
...
* checking examples ... ERROR
...
Error in estfun.glm(x) : could not find function "is.zoo"
Calls: assocTestRegression ... meatHC -> rowMeans -> is.data.frame ->
estfun -> estfun.glm
I import sandwich, sandwich depends...