[R] Efficient manipulation with list object

[Eric Berger]

Sorry typos

Try this. Suppose your list of matrices is in the list locL.

nc <- 3

locL2 <- list()
for ( i in 1:length(locL) )
  locL2[[i]] <- as.numeric( t( locL[[i]] ) )

bigMat <- matrix(unlist(locL2), ncol=nc, byrow=TRUE)

HTH,
Eric


On Sun, Jun 10, 2018 at 7:10 PM, Eric Berger <ericjberger using gmail.com> wrote:

> Try this. Suppose your list of matrices is in the list locL.
>
> nc <- 3
>
> locL2 <- list()
> for ( i in 1:length(locL )
>   locL2[[i]] <- as.numeric(t(locL[[i]]))
>
> bigMat <- matrix(unlist(locL3), ncol=nc, byrow=TRUE)
>
> HTH,
> Eric
>
>
> On Sun, Jun 10, 2018 at 6:33 PM, Christofer Bogaso <
> bogaso.christofer using gmail.com> wrote:
>
>> Hi,
>>
>> I have a list of length 10,000, and each element of that list is a matrix
>> with 3 columns and 2,000 rows.
>>
>> Now when I tried to make a Matrix object with that list using
>> Reduce('rbind', list), my code is taking a considerable amount of time.
>>
>> Is there any way to implement same above task in more efficient way?
>>
>> Thanks,
>>
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>>
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>
>

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