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1. matrix export into TXT file ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Tue, 24 Jun 2003 11:43:22 -0600
I am wondering what would be the best way to export a matrix, e.g. 14*14, into a (comma-delimited) TXT file. Thanks very much for the help; best regards F. PS. I am using SPLUS2000 on WinNT Falk Hue
/archives/html/s-news/2003-06/msg00175.html (6,794 bytes)

2. nnet output interpretation (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Sun, 13 Apr 2003 18:48:29 -0600
i
/archives/html/s-news/2003-04/msg00089.html (6,950 bytes)

3. matrix size problem with huge data set ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Wed, 5 Mar 2003 09:50:44 -0700
we do have a data matrix made of app. 457000 rows and 17 columns. When trying to run a full corrlation matrix, or a GLM, we get the following error message: Error in model.matrix.default(Terms, m, c
/archives/html/s-news/2003-03/msg00029.html (7,435 bytes)

4. thanks, solved RE: matrix size problem with huge data set ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Wed, 5 Mar 2003 10:25:23 -0700
thanks very much for the very quick replies, problem is solved. However, we find it is not self-evident from the help files etc. how one actually increases the memory. Thanks and best regards F. As i
/archives/html/s-news/2003-03/msg00030.html (8,631 bytes)

5. lost objects after crash ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Sat, 15 Mar 2003 20:52:41 -0700
my SPLUS crashed, and I lost my objects in the Object Explorer. Would somebody know how I could get them back ? I am using SPLUS 2000 Professional Rel.2 on Windows NT Thanks very much. Falk
/archives/html/s-news/2003-03/msg00107.html (6,503 bytes)

6. unbalanced samples in tree/rpart ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Tue, 18 Mar 2003 23:52:53 -0700
for running TREE, or rpart, I will have a hugely unbalanced sample size, e.g. 400 presences vs. 400,000 absences. Has somebody experiences and recommendations for such approaches, e.g. pruning ? I c
/archives/html/s-news/2003-03/msg00119.html (6,805 bytes)

7. SPLUS and Remote Sensing ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Sat, 25 Jan 2003 21:57:49 -0700
Dear Colleagues, if I may ask, I am looking for advise and shared experiences on how to use SPLUS efficiently with Remote Sensing images and RS software. Some of the images have app. half a million p
/archives/html/s-news/2003-01/msg00143.html (6,980 bytes)

8. Summary: SPLUS and Remote Sensing ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Thu, 30 Jan 2003 00:49:15 -0700
thanks to Sven Knudsen, Tobias Meyer, Steve Friedman and Allan Spessa who replied with suggestions on my 'Linking SPLUS and Remote Sensing' question. Some answers I got suggested the read/write.table
/archives/html/s-news/2003-01/msg00168.html (8,473 bytes)

9. Joint Count Statistics in Spatial Splus ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Wed, 6 Nov 2002 12:59:02 -0700
we are looking for Joint Count Statistics/Analysis for binary spatial autocorrelation analysis with Spatial Stats SPLUS. We were not able to find it in the Help files etc.; would you know of an SPLU
/archives/html/s-news/2002-11/msg00047.html (6,841 bytes)

10. external dat files into SPLUS (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Mon, 11 Nov 2002 17:46:54 -0700
Dear colleagues, I am looking for some help with a basic problem: SPLUS has text/dat files in its libraries, e.g. pines.dat in the 'spatial' library. Besides x and y data columns, this dat file has s
/archives/html/s-news/2002-11/msg00102.html (7,080 bytes)

11. BIC info (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Tue, 1 Oct 2002 15:14:38 -0600
Dear colleagues, I am wondering if there is an SPLUS implementation that provides the Schwartz Bayesian Information Criterion (BIC)? If the AIC formula would be available or gets computed (how done m
/archives/html/s-news/2002-10/msg00010.html (6,899 bytes)

12. thanks, BIC in MASS (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Tue, 1 Oct 2002 15:46:59 -0600
BIC is a component of MASS, I was not aware of this. Thanks for the fast reply; makes live much easier... All the best Falk
/archives/html/s-news/2002-10/msg00011.html (6,262 bytes)

13. extract predictors from a Tree object/report (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Thu, 19 Sep 2002 13:12:55 -0600
Dear listserv, if I run a Tree, would it be possible to extract automatically the first (or first three...) predictors used by the algorithm from the object/report, e.g. write them into an ASCII file
/archives/html/s-news/2002-09/msg00138.html (6,867 bytes)

14. Regression through the origin ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Mon, 29 Jul 2002 10:17:19 -0600
Dear colleagues, we would like to force a linear regression through the origin (no intercept); how could we implement this with SPLUS (EXCEL has an easy option to do this) ? The SPLUS Help has nothin
/archives/html/s-news/2002-07/msg00215.html (6,890 bytes)

15. thanks very much, solved FW: Regression through the origin ? (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Mon, 29 Jul 2002 10:36:32 -0600
so much; within seconds I had the first reply (Stephen Smith won this award); many others followed. including -1 was the solution; watching for the validity of R^2 etc. is an issue. See below for th
/archives/html/s-news/2002-07/msg00216.html (9,656 bytes)

16. Standardized/Z scores (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Wed, 10 Apr 2002 11:50:14 -0600
Dear Spluser's, For a PCA investigation, I am looking for a convenient way to get standardized scores (z scores) for a dataset with many columns. SPSS simply adds them to a dataset; is there a way to
/archives/html/s-news/2002-04/msg00084.html (6,721 bytes)

17. thanks FW: Standardized/Z scores (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Wed, 10 Apr 2002 13:45:15 -0600
Dear colleagues, thanks for the quick reply, the command scale () , or for instance a zscore<-function(x) { (x-mean(x))/sqrt(var(x)) } does the trick for a matrix. Thanks very much for the fast repli
/archives/html/s-news/2002-04/msg00086.html (8,547 bytes)

18. Regression Curve Estimations (score: 1)
Author: "Falk Huettmann" <falk@ucalgary.ca>
Date: Fri, 12 Apr 2002 15:31:11 -0600
Dear SPLUS list, in SPSS there is a GUI in the regression menu that does 'curve estimation' for different pre-defined curves, e.g. quadratic, log, exponential... (output is a 'best fit' curve). How c
/archives/html/s-news/2002-04/msg00104.html (7,063 bytes)

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