Displaying 3 results from an estimated 3 matches for "lformula".
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2013 Jun 28
3
problem with eval(..., parent.frame(1L)) when package is not loaded
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The lmer() function in the lme4 package has some code of the form
mc <- match.call()
mc[[1]] <- as.name("lFormula")
lmod <- eval(mc, parent.frame(1L))
this is a fairly common idiom in R, found e.g. in lm(), used when
one wants to pass all of the arguments of a function to a different
function (in the case of lm() it's model.frame()).
This idiom fails ("error in eval(...) : could not find...
2013 Nov 07
1
problem with interaction in lmer even after creating an "interaction variable"
Dear all,
I have a problem with interactions in lmer. I have 2 factors (garden and
gebiet) which interact, plus one other variable (home), dataframe arr. When
I put:
/
lmer (biomass ~ home + garden:gebiet + ( 1|Block), data = arr)/
it writes:
/Error in lme4::lFormula(formula = biomass ~ home + garden:gebiet + (1 | :
rank of X = 28 < ncol(X) = 30/
In the lmer help I found out that if not all combination of the interaction
are realized, lmer has problems and one should do new variable using
"interaction", which I did:
/
arr$agg <- interaction...
2013 Oct 12
1
lmerTest
Hi,
I'm trying to user lmer function from lmerTest package because, if I
understood correectly, it allows to make better inference than lmer method
from lme4 package. However, whatever I do I keep getting this error:
Error in lme4::lFormula(formula = mark ~ ssCount + sTime+ : rank of X =
1660 < ncol(X) = 1895
any ideas what could be a problem?
thanks,
Srecko
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