[Rd] Notes on bug reports 3229 and 3242 - as.matrix.data.fram e
Gregor.Gorjanc at bfro.uni-lj.si
Fri Feb 11 21:36:48 CET 2005
From: Liaw, Andy [mailto:andy_liaw at merck.com]
> From: Gorjanc Gregor
> ! Yes, I was not able to do it from my data. But bellow is one. It is
> ! a stupid one, but it works. The problem is use of as.data.frame in
> ! tmp1$L <- as.data.frame(tmp$L). This looks like to produce
> a corrupted
> ! data.frame. If I use just tmp1$L <- tmp$L, write.table and
> ! as.matrix.data.frame works OK. I still think that mine proposal can
> ! give benefit, since it works also on corrupted data frames.
> tmp <- as.data.frame(tapply(breaks, list(wool, tension), mean))
> tmp1 <- data.frame(level=rownames(tmp))
> tmp1$L <- as.data.frame(tmp$L)
Here's the problem that Brian is referring to: Why do you make one variable
in the data frame a data frame? That's what caused problem in
! I agree completely and as I have described up it is my fault that
! I have/had problems with as.matrix.data.frame by use of write.table.
! But I think that my proposal is nice, since as.matrix.data.frame would
! be more robust.
! With regards, Gregor
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