Jose Claudio Faria wrote:
# a) aov
av <- aov(Sepal.Length ~ Species, data=iris)
Error in parse(text = x) :
unexpected symbol in "Sepal(Sepal.Length+Species)Length"
traceback()
13: parse(text = x)
12: eval(parse(text = x)[[1]])
11: formula(eval(parse(text = x)[[1]]))
10: formula.character(object, env = baseenv())
9: formula(object, env = baseenv())
8: as.formula(frml)
7: expand.formula(frml, colnames(data))
6: model.matrix.formula(mt, mf, contrasts)
Er, I have
> getAnywhere(model.matrix.formula)
no object named 'model.matrix.formula' was found
> methods(model.matrix)
[1] model.matrix.default model.matrix.lm
Where did your model.matrix.formula come from???
-p
5: model.matrix(mt, mf, contrasts)
4: lm(formula = Sepal.Length ~ Species, data = iris, singular.ok = TRUE)
3: eval(expr, envir, enclos)
2: eval(lmcall, parent.frame())
1: aov(Sepal.Length ~ Species, data = iris)
# b) lm
lm1 <- lm(Sepal.Length ~ Sepal.Width, data=iris)
Error in parse(text = x) :
unexpected symbol in "Sepal(Sepal.Length+Sepal.Width)Length"
traceback()
10: parse(text = x)
9: eval(parse(text = x)[[1]])
8: formula(eval(parse(text = x)[[1]]))
7: formula.character(object, env = baseenv())
6: formula(object, env = baseenv())
5: as.formula(frml)
4: expand.formula(frml, colnames(data))
3: model.matrix.formula(mt, mf, contrasts)
2: model.matrix(mt, mf, contrasts)
1: lm(Sepal.Length ~ Sepal.Width, data = iris)
HTH,
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
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