[R] creating cubes
matteo.richiardi at gmail.com
Fri Jan 15 23:57:55 CET 2016
thanks for your answer. How can I populate the array with the
matrixes? Suppose I want to populate it with 10 matrixes
On 15 January 2016 at 22:26, Dalthorp, Daniel <ddalthorp at usgs.gov> wrote:
> How about: D<-array(dim=c(d1, d2, d3))?
> On Fri, Jan 15, 2016 at 2:20 PM, Matteo Richiardi
> <matteo.richiardi at gmail.com> wrote:
>> What is the best way to store data in a cube? That is, I need to create a
>> data structure D with three indexes, say i,j,h, so that I can access each
>> data point D[i,j,h], and visualise sections like D[i,j,] or D[,,h].
>> I have tried to create an array of matrixes:
>> D <-matrix(matrix(NA,i,j),h)
>> but then D[i] returns a number, and not a matrix.
>> I imagine this is a dummy question, but I did search for an answer on
>> various R help sites, and found nothing straightforward. Being an
>> inexperienced R user, I prefer a simple solution, even at some efficiency
>> Many thanks for your help.
>> [[alternative HTML version deleted]]
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>> and provide commented, minimal, self-contained, reproducible code.
> Dan Dalthorp, PhD
> USGS Forest and Rangeland Ecosystem Science Center
> Forest Sciences Lab, Rm 189
> 3200 SW Jefferson Way
> Corvallis, OR 97331
> ph: 541-750-0953
> ddalthorp at usgs.gov
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