search for: 2x6

Dear R users, I need to to the the following. Let a= 1 2 3 4 5 6 and b= -1 -2 -3 be (2x3) matrices. -4 -5 -6 I need to combine the two matrices into a new (2x6) matrix like this: ab = ( 1 -1 2 -2 3 -3 ) 4 -4 5 -5 6 -6 How can this be done in R? ----------------------------------------------------------------- ?????? ??? - ?? ???????! www.survivor.btv.bg

> Hi, > Sorry if this is a stupid question (bit of a newbie). I'm building a Samba > fileserver on a box with a hardware raid array of about 65GB which I'm > hoping to share out to the local LAN . I was wondering if the filesystem > used (ext2,ext3, reiserfs etc) on the partition where the Samba shares > will reside makes much of a difference? I'd obviously like to

I am going to try an experiment with e-mail aggregation where I expect to receive over 1 million e-mails a day from public lists. Can anyone shed some light on hard disk space (to retain this e-mail for long periods) and system specs to be able to handle the load? I am looking to buy a low end box, but that can hold lots of RAM and accomodate a fair number of HD's to store the e-mail while

Hi, I am trying to create Bid/Ask for each second from a high volume stock and the only way I have been able to solve this is using loops to create the target matrix from the source tick data matrix. Looping is too slow and not practical to use on multiple stocks. For example: Bids Matrix (a real one is 400,000++ length): Bid Time 10.03 11:05:03.124 10.04 11:05:03.348 10.05

Hi there fellow R-users, Im seeing some strange behaviour when I multiply a vector by a matrix Here is my script: > tr 1 2 3 4 5 6 0.2217903 0.1560525 0.1487908 0.1671354 0.1590643 0.1471667 > > ex1 a b c d e f 1 0.2309579 -3.279045 -0.6694697 -1.1024404 0.2303928 -1.5527404 2

ZFS fans, I''m preparing some analyses on RAS for large JBOD systems such as the Sun Fire X4500 (aka Thumper). Since there are zillions of possible permutations, I need to limit the analyses to some common or desirable scenarios. Naturally, I''d like your opinions. I''ve already got a few scenarios in analysis, and I don''t want to spoil the brain storming, so