Storing List data-types as Raster values

Thanks Lionel, Lets see what I can do. A amjor issue is that  I need toe
keep pair of values (id, direction) and maintaining this pair relation
while spreading them in different layers becomes problematic.

Again thanks,


On Fri, Sep 27, 2013 at 2:57 PM, Lionel <s6lihert at uni-bonn.de> wrote:

Dear Shahab,

Indeed each raster cell should contain an unique value, I guess this is
part of the definition of what a raster is. What you could do is put your
different variable (id, direction) in different layer of a raster stack.
See ?stack for example.

Yours,
Lionel


On 09/27/2013 02:33 PM, shahab wrote:

Hi,

I am quite new to Raster library and a bit confused.
Basically I would like to raster an area, and then place information
(Identifuer, Direction) in each cell ,as follows:

 myraster<-raster()

  myraster[1:3]<-list(id=c(1),**direction=c(14,20))

Error in min(vals) : invalid 'type' (list) of argument
In addition: Warning message:
In .replace(x, i = i, value = value, recycle = 1) :
   number of items to replace is not a multiple of replacement length


It seems to me that I can not put an object of type List,or vector,...in
the cells??

If this is the case, what would be the alternative solutions?

/Shahab

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