Sven Garbade <garbade at psy.uni-muenchen.de> writes:
> Dear R-list,
>
> is it possible to convert a threedimensional array to a matrix? The
> array has the form
>
> , , -4
>
> -4 -3 -2 -1 0 1 2 3 4
> -80 1588 NA 1171 NA 1121 NA 852 NA 1580
> 0 1497 NA 1311 NA 762 NA 1185 NA 1466
> 80 1960 NA 1257 NA 941 NA 1435 NA 1636
>
> [...]
>
> I need a matrix like
>
> -80 -4 -4 1588
> -80 -3 -4 NA
> -80 -2 -4 1171
> etc.
>
>
> I?ve tried write.table() with no succes:
The way to do it would be something like
cbind(as.vector(slice(x,1)),
as.vector(slice(x,2)),
as.vector(slice(x,3)),
as.vector(x))
where slice is the generalised row()/col()/... function which we
haven't got in R (yet):
slice<-function(x,i) sweep(x, i, 1:dim(x)[i], function(x,y) y )
Hmm...that's not quite right. You want the dimnames in there instead
of 1:dim(x)[i], but you get the general idea.
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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