similar to: Whitehead's group sequential procedures

Dear List, I recently asked about any R implementations of Whitehead's methods for sequential clinical trials. Here's the summary of answers so far : 1) There is no R public implementation of those methods 2) There exists an interest for such a package, which does things quite different from Lan-deMets paradigm (shortly : Whitehead's methods allows for unplanned interim analyses

Dear lists, It seems that RODBC has a problem : when reading through ODBC from an Access table with missing values, *character* missing values are (correctly) reported as NA factor values. *Numeric* values, however, retain the value of the same variable in the previous row. My setup : R 1.1.1 under Win95, RODBC as compiled with the R Win CRAN distribution, MS Access 97. I just discovered this,

Dear lists, It seems that RODBC has a problem : when reading through ODBC from an Access table with missing values, *character* missing values are (correctly) reported as NA factor values. *Numeric* values, however, retain the value of the same variable in the previous row. My setup : R 1.1.1 under Win95, RODBC as compiled with the R Win CRAN distribution, MS Access 97. I just discovered this,

Dear list, Working the example in Stats complements to V&R 3rd ed., I found this : > library(MASS) > library(mva) > data(farms) > plot(mca(farms,abbrev=TRUE),cex=rep(0.7,2)) # ... Works OK # Sheer curiosity ... > plot(mca(farms,abbrev=TRUE,nf=4),cex=rep(0.7,2)) Error in rep(p * X.svd$d[sec], c(n, n)) : invalid number of copies in "rep" A bit of exploration in the

I saw in the R-digest a thread about RODBC. 1) I think that this package is *extremely* valuable : it fulfills a need quite important in the case of iterative (e. g. periodic) analyses. No need to periodically return to your data and re-dumping them ... 2) The current version has a serious bug if your datasets has missing numeric values. M. Lapsley, the original author, is aware of it, but has

Dear all, I recently had to review the current litterature about some medical treatment with two possible variants (let's call them A and B). I collected all available prospective randomized trials about this treatment : I got four trials for the A variant and three for the B variant, all studies comparing one variant to a "suitably choosen" placebo. Two classes of variables are of

This is an inquiry for all those who have been working on external data base applications. I sent an inquiry (below) to snews about this sort of thing a couple of years ago and eventually decided that I would wait to see what external database developments occurred and then revisit the problem. I hope that foundations are now better. Suppose for the sake of concreteness you have a large

"Writing R Extensions" says {quotes} If you have a crash which gives a core dump you can use something like gdb /path/to/R/bin/exec/R core.12345 to examine the core dump. If core dumps are disabled... {unquotes} sadly it doesn't go on to say how to enable if core dumps are disabled. I understand that in bash I need to do $ ulimit -c unlimited but this doesn't seem to

Hi, i'm quite new to dovecot. i built it from the stable-1.0 sources. i have the following error messages in syslog when trying to launch dovecot: dovecot: Dovecot v1.0-stable starting up dovecot: auth(default): Unknown passdb type 'pam' dovecot: Auth process died too early - shutting down dovecot: child 373 (auth) returned error 89 i googled a bit, and found some posts

Hi, i'm using dovecot-1.0-stable. All my mail accounts are virtual accounts that come from pam with the following configuration in auth_default: passdb = pam userdb = static uid=5000 gid=5000 home=/var/mail/vhost/example.com/%n mail=/var/mail/vhost/example.com/%n for a user foo, if the directory /var/mail/vhost/example.com/foo already exists, then all is ok, but if the directory

Hi, i tried to find the answer but didn't so my apologies if the question is obvious ! I'm trying to parallelize the following R code : pk2test = c(1:16,(12*16+1):(12*16+16),(16*16+1):(16*16+16),(20*16+1):(20*16+16)) score.mat = matrix(nc=16*4,nr=16*4) for(i in 1:(16*4)) { for(j in i:(16*4)) { score.mat[i,j] = score.mat[j,i] =

I have been working on an R package that calls C code using .C(). I recently started including some functions from the GNU Scientific Library in my code. The code runs fine on my machine when not wrapped in the package. But I get the following error from "R CMD check" * checking whether the package can be loaded ... ERROR Loading required package: splancs Loading required package: sp

https://bugzilla.samba.org/show_bug.cgi?id=2207 Summary: Listing of available sync-sets is very different with or without ssh Product: rsync Version: 2.6.2 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P3 Component: core AssignedTo: wayned@samba.org

I'm trying to get dovecot running on my VPS and the main imap process is receiving a SIGKILL from what I presume to be the Linux Kernel and/or OpenVZ. This happens after I login and my client(s) just sit their idling. The mailbox is empty. I'm not running out of memory. stracing the process doesn't show anything interesting... ... gettimeofday({1233024777, 844804}, {420, 0}) = 0

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(Yes, today is the "John has an idea day") So, in my now fairly extensive coding of extension priority lists, I'm getting very bored of re-numbering my priority lists every time I add something at the top of the list. If I have a 7 step priority list, and I need to add something in at priority 2, then I have to re-number five other priorities, and if my Dial statement is

Andreas was kind enough to point out that not neccesarily all ext3fs have htrees ready to go. I am running redhat8.0 out of the box. How can I check if ext3fs with htrees is running? I can download the kernel source, but I don't know what options were used when it was built by redhat. Thanks much for all of your help. -Parker -----Original Message----- From: Andreas Dilger

Didn't hear back from anyone regarding if there is a way to determine if I am running the ext3fs with htree. Is there a way I can do it without checking the src code since I am running the precompired redhat kernel with 8.0? Perhaps an entry under /proc somewhere? Pj -----Original Message----- From: Parker Johnson Sent: Tuesday, January 14, 2003 3:34 PM To: 'Andreas Dilger';

Bummer. Does anyone have a url that describes the 2.4 patching process? Any claims on stability? Thanks, Parker -----Original Message----- From: 'Andreas Dilger' [mailto:adilger@clusterfs.com] Sent: Wednesday, January 15, 2003 4:35 PM To: Parker Johnson Cc: 'ext3-users@redhat.com'; Ops Subject: Re: ext3fs still uses sequential search of file names in director ies? On Jan 15,

Instead of using sequential integers for IDs for my objects I was wondering if I could easily make it so that my IDs where longer auto- generated random strings/integers. So instead of: http://www.mydomain.com/user/view/1 Would be: http://www.mydomain.com/user/view/d81096b87a7c5565f On top of that... is there big benefits for security reasons to use non-sequential numbers? Is it worth