[R] Memory question

[Kenneth Cabrera]

Thank you Dr. Spencer Graves for your answer.

What kind of matrices? They come form an image of about 3000x5000, and
I need to generate arround 1024 matrices of the same size, they are not 
sparse
matrices.

What function can I use to, once generated one matrix, I could save into 
disk
and then use the same space for the following, and so on.

Thank you very much for your help

Kenneth

Spencer Graves wrote:

>	  What kinds of matrices?  There are facilities in the Matrix and 
>SparseM packages that might help for sparse matrices.  If they are N x k 
>where N is large and k is not, can you compute something like the QR 
>decomposition and get away with keeping only the R part for most of your 
>matrices?
>
>	  One could potentially define a class of matrices that are only kept 
>in memory only when needed;  I think S-Plus may do that.  It would take 
>a lot of work to make that work generally, but you might be able to 
>accomplish what you need with a much smaller effort.
>
>	  spencer graves
>
>Kenneth Roy Cabrera Torres wrote:
>
>  
>
>>Hi R users and developers:
>>
>>I want to know how can I save memory in R
>>for example:
>>  - saving on disk a matrix.
>>  - using again the matrix (changing their values)
>>  - saving again the matrix on disk in a different file.
>>
>>The idea is that I have a process that generate several
>>matrices, but if I keep them all in memory it will overflow.
>>
>>How can I save them in different files, so I use the same
>>amount of memory for each processed matrix?
>>
>>Thank you for your help.
>>
>>    
>>
>
>  
>