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I doubt that R's basic matrix capabilities can handle this, but have a look at the Matrix package, especially if your matrix is some special form. Bert On Tue, Apr 11, 2023, 19:21 Shunran Zhang <szhang at ngs.gen-info.osaka-u.ac.jp> wrote: > Hi all, > > I am currently working with a quite large matrix that takes 300G of > memory. My computer only has 512G of memory. I would need to do a few > arithmetic on it with a scalar value. My current code looks like this: > > mat &...

...7:34?AM Bert Gunter <bgunter.4567 at gmail.com> wrote: > I doubt that R's basic matrix capabilities can handle this, but have a look > at the Matrix package, especially if your matrix is some special form. > > Bert > > On Tue, Apr 11, 2023, 19:21 Shunran Zhang < > szhang at ngs.gen-info.osaka-u.ac.jp> > wrote: > > > Hi all, > > > > I am currently working with a quite large matrix that takes 300G of > > memory. My computer only has 512G of memory. I would need to do a few > > arithmetic on it with a scalar value. My current cod...

Hello R users, I'm wondering whether it is possible to manage big data set in R? I have a data set with 3 million rows and 3 columns (X,Y,Z), where X is the group id. For each X, I need to run 2 regression on the submatrix. I used the function "split": datamatrix<-read.csv("datas.csv", header=F, sep=",") dim(datamatrix) # [1] 2980523 3

Hi all, I am currently working with a quite large matrix that takes 300G of memory. My computer only has 512G of memory. I would need to do a few arithmetic on it with a scalar value. My current code looks like this: mat <- 100 - mat However such code quickly uses up all of the remaining memory and got the R script killed by OOM killer. Are there any more memory-efficient way of doing

Still about the mvpart. Is there any way I can control for the number of elements in each node in the function mvpart? Specifically, how can I ask partition to ignore node with elements less than 10? Thanks! -Shu

Hi, Hope somebody can help me out. I have struggling at this problem for weeks. I have a Linux (SuSE SLES-8) in our company's windows network. I think I set up everything right: now I can ping/telnet the linux machine from a PC by name and IP, and ping PCs from the Linux machine by name and IP. The linux machine is shown in My Network Places in PC. But, as I clicked it, I got a message

Hello, I'm using the R package called mvpart, which is about the multivariate regression trees. The function I wrote is: mrt1<- mvpart(coefmat~sChip+sScreen+sMem,data=mixdata, xv="pick", plot.add=TRUE,uniform=TRUE,which=4,all=TRUE,xadj=2,yadj=2,rsq=TRUE,big.pts=TRUE,wgt.ave.pca=TRUE,legend=TRUE,bars=F, pca=TRUE) where "coefmat" is a matrix(of dimension N*K) to store