[R] Multidimensional numeric structure
Liaw, Andy
andy_liaw at merck.com
Wed Apr 21 16:35:05 CEST 2004
Have you gone through `An Introduction to R', or even ?array?
Try:
mycube = array(1:27, c(3, 3, 3))
mycube[1, 2, 3]
mycube[2, , ]
mycube[, 2, ]
etc.
Andy
> From: MMarques Power
>
>
> I know this is going to be a dumb question but...
> I need a cube like struture , I have 3 dimensions well defined which
> I need to define a value in the cube something like
> Cube [][][] in C+ ou Java ...
> I have thought in making a matrix and then an array...
> and even the other way around.
> The problem is that the I have the indexs and wanted to access direcly
> the element both reading or writing without to much effort....
>
> But how can "access" a specific number only by their index ?
> of course It is possible to make a specific calc in order to reach the
> place I needed ....
> But what for ? if I have the correct indexs directly ?
>
> Is "R" capable of building such a struture besides adding up
> matrixes and or arrays ?
> Did I miss anything ?
>
> Thanks in advance
> Marco Marques
>
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