[R] max.col

[Prof Brian D Ripley]

On Fri, 19 Nov 1999, Martin Maechler wrote:

> >>>>> "JMor" == Morris, Jeffrey [OCDUS] <Morris> writes:
> 
>     JMor> I am trying to run, in R -Windows95, the example in MASS2,
>     JMor> section 17.2.  When I run predplot() on cush.lda I get
> 
>     >> predplot(cush.lda, "LDA")
>     JMor> Error: couldn't find function "max.col"
> 
>     JMor> I get the plot OK, but within predict(), it balks on max.col
> 
> You somehow didn't "attach" the MASS package properly :
> For me :
> 
>   > library(MASS)
>   > find(max.col)
>   [1] "package:MASS"

Or you have an older version of MASS (5.3), where max.col is in
library(nnet), and the ch17 script begins 

# Chapter 17   Classification

library(MASS)
library(nnet)
options(width=65, digits=5, height=9999)
library(tree)
library(modreg)

Since you are using MASS2, you do need to check the scripts for R changes
(most of which have gone in MASS3).

>     JMor> A more general question about using VR.  Is there an easy way
>     JMor> to use library on VR in general or do I have to move each into
>     JMor> the library folder and load each separately.

This might be a question about installing on Windows. The current
VR61-4.zip can be unpacked directly in the rw0651\library directory,
but that was not true of earlier versions.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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