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1. Re: Opposite of paste (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Tue, 2 Apr 2002 22:51:45 -0600
There is a reasonably well hidden but quite handy little function written by Bill Dunlap (thanks Bill!) to do this: string.to.chars. Comes with Splus 4.5 and 2000, anyway; don't know about other ver
/archives/html/s-news/2002-04/msg00021.html (9,335 bytes)

2. Re: building block-diagonal matrix ? (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Wed, 16 Jan 2002 08:33:41 -0600
{ via matrix ) if(!is.list(x)) stop("x not a list") n <- length(x) if(n == 0) return(NULL) x <- lapply(x, function(y) if(length(y)) as.matrix(y) else stop("Zero-length component in x")) d <- array(u
/archives/html/s-news/2002-01/msg00099.html (9,669 bytes)

3. Re: Several ifelse in one pass? (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Thu, 1 Nov 2001 11:52:00 -0600
How about: mm <- rep(1, nrow(inc.all)) imat <- match(inc.all[, 'formule'], c(2, 5)) mm[!is.na(imat)] <- c(1.1, 0.90)[imat[!is.na(imat)]] ttt.enc <- inc.call[, "encincf'] * mm ttt.enc15 <- inc.call[,
/archives/html/s-news/2001-11/msg00007.html (9,973 bytes)

4. bug in rbind.data.frame? (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Mon, 12 Nov 2001 12:30:34 -0600
I'm using here Splus 2000 for Windows. My apologies in advance if this is a well-known bug. Can somebody explain why rbind.data.frame does not work correctly when given list arguments? Here, tmp is
/archives/html/s-news/2001-11/msg00093.html (9,265 bytes)

5. JOB - Statistician at Cereon Genomics (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Fri, 13 Jul 2001 14:04:05 -0500
Cereon Genomics, a young but already well-established and thriving agricultural biotechnology company in Cambridge MA, USA, is seeking a Master's-level statistician to join us. This person would foc
/archives/html/s-news/2001-07/msg00106.html (8,983 bytes)

6. Re: Changing Matrix to Vector (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Wed, 20 Jun 2001 09:53:56 -0500
If data.mat (a dataframe) contains any columns of mode "character", as.matrix (at least in Splus 4.5 and Splus 2000 for Windows) will call format() to give all elements of the column the same number
/archives/html/s-news/2001-06/msg00174.html (8,134 bytes)

7. Re: Formatting with Leading Zeroes (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Thu, 21 Jun 2001 09:24:29 -0500
Here's my suggestion. Cheers, Scott == Scott D. Chasalow Cereon Genomics Email: Scott.Chasalow@cereon.com == "leadzero" <- function(x, minimum.digits = 2) { if(length(x) == 0) return(as.character(x))
/archives/html/s-news/2001-06/msg00197.html (9,107 bytes)

8. RE: [Int_snews] Re: Unique for matrices (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Mon, 4 Dec 2000 14:49:42 -0600
I have two minor problems with Bill's table.rows() function below. First, it doesn't work on data.frames (at least not under Splus 4.5 for windows), because object tab is a 1D array, and cbind.data.
/archives/html/s-news/2000-12/msg00028.html (12,789 bytes)

9. RE: Where is the max value? (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Thu, 5 Oct 2000 09:45:07 -0500
I would just add a wee warning, which I believe has graced the pages of this mailing list more than once before, about this sort of thing. Because the matrix x often may contain elements resulting f
/archives/html/s-news/2000-10/msg00035.html (14,178 bytes)

10. [S] JOBS - Statisticians at Cereon Genomics, Cambridge MA USA (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Fri, 18 Aug 2000 09:11:52 -0500
x(x[!is.na(x)])+1 x <- c(spec,x) while (any(is.na(x))) x[is.na(x)] <- x[(1:length(x))[is.na(x)]-1] x[x==spec] <- subst x <- x[-1] x } NAvec <- c(NA, NA, 1,
/archives/html/s-news/2000-08/msg00171.html (14,178 bytes)

11. [S] JOB - Statistical Geneticist (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Fri, 10 Mar 2000 17:41:52 -0600
Cereon Genomics, a young and rapidly-growing agricultural biotechnology company in Cambridge MA, USA, is seeking a Statistical Geneticist. Description of the position follows. Cheers, Scott Cereon Ge
/archives/html/s-news/2000-03/msg00107.html (10,778 bytes)

12. RE: [S] log(0) problem (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <scott.chasalow@cereon.com>
Date: Fri, 17 Dec 1999 15:50:29 -0600
Sorry I can't answer your question, but it brings to mind a somewhat related problem I had with S-plus (4.5) quite recently. I was dealing with a multinomial likelihood, containing factors such as p
/archives/html/s-news/1999-12/msg00134.html (9,422 bytes)

13. RE: [S] Yet Another Vectorization Question Answered! (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <SCOTT.CHASALOW@cereon.com>
Date: Thu, 23 Sep 1999 16:49:24 -0500
In the old days, before colSums() existed, and when lapply() was substantially slower than it is now, I would use this: rep(1, nrow(dfr)) %*% (dfr < 0) which gives the number of negative values in e
/archives/html/s-news/1999-09/msg00240.html (8,784 bytes)

14. RE: [S] Help eliminate a recursive function (score: 1)
Author: "CHASALOW, SCOTT [AG/2165]" <SCOTT.CHASALOW@cereon.com>
Date: Fri, 30 Jul 1999 12:17:14 -0500
That's a nice algorithm, Bill, conveniently packaged. Its nice that you can generate one combination at a time if you want, and easily generate contiguous subsets of all combinations. As this casual
/archives/html/s-news/1999-07/msg00280.html (11,898 bytes)

15. [S] sign mail to s-news, please (score: 1)
Author: "CHASALOW, SCOTT [AG/2170]" <SCOTT.CHASALOW@cereon.com>
Date: Wed, 7 Apr 1999 08:29:12 -0500
If I might make a wee request, could people please sign their email (including email address) sent to s-news. I don't know if it happens locally, or at wubios.wustl.edu, but headers of these message
/archives/html/s-news/1999-04/msg00036.html (8,490 bytes)

16. Re: [S] sign mail to s-news, please (score: 1)
Author: "CHASALOW, SCOTT [AG/2170]" <SCOTT.CHASALOW@cereon.com>
Date: Wed, 7 Apr 1999 14:55:45 -0500
Thanks to all who replied to this message. The problem is local; normal people should see the original sender in the "From:" field, and "owner-s-news@wubios.wustl.edu" in the "Sender:" field. I thin
/archives/html/s-news/1999-04/msg00045.html (9,211 bytes)

17. RE: [S] sign mail to s-news, please (score: 1)
Author: "CHASALOW, SCOTT [AG/2170]" <SCOTT.CHASALOW@cereon.com>
Date: Wed, 7 Apr 1999 15:09:04 -0500
Um, this was the 3rd unsigned email in this thread today... What was that subject line again? - Scott.Chasalow@cereon.com } --Original Message-- } From: owner-s-news@wubios.wustl.edu at INTERNET } Se
/archives/html/s-news/1999-04/msg00047.html (8,823 bytes)

18. RE: [S] matrix (score: 1)
Author: "CHASALOW, SCOTT [AG/2170]" <SCOTT.CHASALOW@cereon.com>
Date: Mon, 12 Apr 1999 13:43:20 -0500
I use the function bdiag(), given below. Cheers, Scott Scott.Chasalow@cereon.com } --Original Message-- } From: owner-s-news@wubios.wustl.edu at INTERNET } Sent: Monday, 12 April 1999 12:47 } To: s-
/archives/html/s-news/1999-04/msg00100.html (8,955 bytes)

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