[R] Splitting 3D matrix from for loop to generate/save 2D matrices

Hi! I have a matrix called M with dimension (586,100,100). I would like to split and save this into 586 matrices with dimension 100 by 100. I have tried the following for loops but couldn't get it work.. l-dim(M)[1] for (i in (1:l)){ save(M[i,,],file = M_[i].img) } Can somebody help me with

Re: [R] Splitting 3D matrix from for loop to generate/save 2D matrices

Hi, On Sun, Nov 21, 2010 at 9:27 PM, Hana Lee hana...@email.unc.edu wrote: Hi! I have a matrix called M with dimension (586,100,100). First of all, In R it is only an object with *two* dimensions that is called matrix. Anything with two or more dimensions is called an array. Example: x -

Re: [R] Splitting 3D matrix from for loop to generate/save 2D matrices

Hi Hana, Use the paste function to create your file names. for ( i in 1:dim(M)[1] ) save( M[i,,], file=paste(M_, i, .img, sep=) ) Alternatively, use the sprintf function to get names with leading zeroes for easier sorting of files: for (i in 1:dim(M)[1] ) save( M[i,,], file=sprintf(M_%03d.img,

Re: [R] Splitting 3D matrix from for loop to generate/save 2D matrices

Sorry, I did a mistake corrected below. On Sun, Nov 21, 2010 at 9:50 PM, hb h...@biostat.ucsf.edu wrote: Hi, On Sun, Nov 21, 2010 at 9:27 PM, Hana Lee hana...@email.unc.edu wrote: Hi! I have a matrix called M with dimension (586,100,100). First of all, In R it is only an object with *two*

Re: [R] Splitting 3D matrix from for loop to generate/save 2D matrices

On Nov 22, 2010, at 12:27 AM, Hana Lee wrote: Hi! I have a matrix called M with dimension (586,100,100). In R you have an array (not a matrix) wehn the number of dimensions is 3. I would like to split and save this into 586 matrices with dimension 100 by 100. I have tried the