search for: ripley_at_stats

Displaying 5 results from an estimated 5 matches for "ripley_at_stats".

2007 Aug 09
1
Memory Experimentation: Rule of Thumb = 10-15 Times the Memory
..."graphics" "grDevices" "utils" "datasets" "methods" [7] "base" # uname -a Linux ***.com 2.6.9-023stab044.4-smp #1 SMP Thu May 24 17:20:37 MSD 2007 x86_64 x86_64 x86_64 GNU/Linux ====== Quoted Text ==== From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> Date: Tue, 26 Jun 2007 17:53:28 +0100 (BST) The R Data Import/Export Manual points out several ways in which you can use read.csv more efficiently. On Tue, 26 Jun 2007, ivo welch wrote: > dear R experts: > > I am of course no R experts, but use it regularly. I thou...
2005 Nov 18
0
Surprise when mapping matrix to image
Hello, I wonder if image(t(x)[ncol(x):1, ]) can do the job correct! perhaps this does the job better: image(t(x)[,nrow(x):1]) Bj??rn From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> Date: Fri 27 Aug 2004 - 06:43:50 EST On Thu, 26 Aug 2004, Glynn, Earl wrote: > Start with: > > > x <- c(1:7,1) > > dim(x) <- c(2,4) > > x > [,1] [,2] [,3] [,4] > [1,] 1 3 5 7 > [2,] 2 4 6 1 > > 2 Rows of 4 Columns. Upper-left and lower-ri...
2007 Sep 04
0
ML fit of pareto and lognormal distributions to grouped data
...mma distribution ML fitting for grouped data. I just wonder if there is any method that works for lognormal or pareto distribution? An example would be: Ranges<-c(0,50,100,150,200,250,300,400,500,750,1000) Claims<-c(452,62,95,88,118,118,261,367,972,982,3024) >From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> >Date: Tue 28 Nov 2006 - 13:26:11 GMT > > >library(stats4) > >ll <- function(shape, rate) >{ > > z <- pgamma(breaks, shape=shape, rate=rate) > -sum(counts * log(diff(z))) > > >} >mle(ll, start=list(shape=1, rate=1/mean(breaks))) &...
2006 Oct 29
1
glmmPQL in 2.3.1
...hard to interpret. Many thanks for your input! Christian Gold http://www.uib.no/people/cgo022/ Re: [R] glmmPQL in 2.3.1 This message: [ Message body ] [ More options ] Related messages: [ Next message ] [ Previous message ] [ In reply to ] [ [R] glmmPQL in 2.3.1 ] From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> Date: Tue 26 Sep 2006 - 09:58:19 GMT On Mon, 25 Sep 2006, Justin Rhodes wrote: > Dear R-help, > > I recently tried implementing glmmPQL in 2.3.1, I thought *I* had implemented it: are you talking about my function in package MASS or your own implementation? > and...
2006 Nov 08
0
R solaris 64 (etc) build errors
...eciate any help that listies can provide. I'm willing to try out any suggestions that folks are able to come up with. Thanks a bunch, --elijah School of Library and Information Science Indiana University, Bloomington ------------------------------------------ From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> Date: Tue 10 Oct 2006 - 10:49:01 GMT Which Solaris is this? I am not seeing any problems with our Solaris 8 systems. Was the compiler built on that exact system? What gcc options were used (-std=gnu99, as recommended, for instance)? It looks like a system header problem: __builtin_...