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1. Applying vector functions to dataframes (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Mon, 25 Jul 2005 16:27:48 -0400; I have a fairly simple function that takes two vectors as arguments with a scalar result. I would like to apply it pairwise to all the columns in a large dataset, resulting in a symmetrical matrix. (; /archives/html/s-news/2005-07/msg00134.html (10,013 bytes)
2. m (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Tue, 6 Jan 2004 16:16:18 -0500; I would like to reproduce in lme the functionality of the GROUPS= option in the RANDOM statement of PROC MIXED in SAS. This option allows separate random variance and covariance parameters for differ; /archives/html/s-news/2004-01/msg00019.html (6,543 bytes)
3. t (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Wed, 14 Jan 2004 10:06:00 -0500; I posted last week about reproducing the functionality of the GROUP= option on the RANDOM statement in PROC MIXED in lme. I didn't hear from many people, but those who did reply requested a summary o; /archives/html/s-news/2004-01/msg00064.html (8,802 bytes)
4. Type III SS (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Wed, 3 Dec 2003 12:26:51 -0500; I don't understand the following behavior of the the ssType3 function in SPlus. First, I use lm to compute the SSE for models with each of two predictors (SATV and SATM; hypothetical data) alone and; /archives/html/s-news/2003-12/msg00011.html (8,431 bytes)
5. Re: Type III SS: Repair? (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Thu, 11 Dec 2003 13:16:25 -0500; Andy was kind enough to reply to my question about ssType3. It works for him, and it turns out it works for me too, on another computer, or on the same computer using a different .Data directory. So; /archives/html/s-news/2003-12/msg00065.html (7,465 bytes)
6. Problem solved (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Thu, 11 Dec 2003 13:45:24 -0500; masked() did the trick. Thanks, everyone. Eric Eric Turkheimer, PhD Department of Psychology University of Virginia PO Box 400400 Charlottesville, VA 22904-4400 434-982-4732 434-982-4766 (FAX); /archives/html/s-news/2003-12/msg00068.html (6,329 bytes)
7. varExp in lme (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Thu, 18 Dec 2003 19:20:40 -0500; /Pu; /archives/html/s-news/2003-12/msg00107.html (6,515 bytes)
8. Lowess question (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Sun, 10 Nov 2002 11:45:55 -0500; This is more of a methods question than an S question per se, but I thought it might find a better answer here than on the usenet stat groups. When computing a lowess smooth, you first select a span; /archives/html/s-news/2002-11/msg00080.html (9,940 bytes)
9. drop1 v. ssType=3 (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Tue, 26 Nov 2002 17:21:57 -0500; Can someone explain to me the following behavior of ssType=3? My understanding of Type3 SS is that it gives the reduction in SSE produced when each term is added to all the others, ie, like drop1.<o:; /archives/html/s-news/2002-11/msg00207.html (15,590 bytes)
10. Gradual Shading (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Sun, 27 Oct 2002 06:23:24 -0500; Is there any facility in S to gradually change the shading of a bar, so it is, say, very dark on the bottom and then becomes progressively lighter as you go up? <o:p></o:p> <o:p> </o:p> Thanks,<o:p><; /archives/html/s-news/2002-10/msg00230.html (9,296 bytes)
11. tapply() on columns of matrix (score: 1): Author: "Eric Turkheimer" <ent3c@virginia.edu>; Date: Tue, 19 Dec 2006 09:14:55 -0500; I have a matrix with three columns. I would like to compute the covariance between the first two, separately according to values of the third. The best I can figure out is to split the matrix up into; /archives/html/s-news/2006-12/msg00011.html (7,184 bytes)

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