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1. really large files - import vs. use (score: 1): Author: Eva Goldwater <goldwater@schoolph.umass.edu>; Date: Thu, 16 Dec 2004 09:33:02 -0500 (EST); As a long-time SAS user but S-Plus newbie, I am quite puzzled by this solution, as it implies that S-Plus has no problem WORKING with very large files, but only with the import process. Is that corr; /archives/html/s-news/2004-12/msg00113.html (14,883 bytes)
2. Re: really large files - import vs. use (score: 1): Author: "Bos, Roger" <BosR@ny.rothinc.com>; Date: Thu, 16 Dec 2004 09:47:40 -0500; A lot of people have given me suggestions on splitting up the data and recombining it in SPLUS. That is what I have done before in both S+ and R. I am also somewhat puzzled in why I can't import a la; /archives/html/s-news/2004-12/msg00114.html (15,597 bytes)
3. Re: really large files - import vs. use (score: 1): Author: "Chushu Gu" <chushugu@hotmail.com>; Date: Thu, 16 Dec 2004 12:03:22 -0500; Yes, just import process has some limit. will 6.2 recommendation it either. advance. to read.table("M:\\tina\\R2000V10SPLS29m.TXT",header=TRUE,sep=",",as.is=TRUE,na my mostly any calculation we impor; /archives/html/s-news/2004-12/msg00118.html (16,286 bytes)
4. Re: really large files - import vs. use (score: 1): Author: Tony Plate <tplate@blackmesacapital.com>; Date: Thu, 16 Dec 2004 11:13:53 -0700; S-PLUS also has problems working with very large data files. A general rule of thumb is that it's difficult to use lm() when the dataset size is more than 1/6 of the usable virtual memory. Other simp; /archives/html/s-news/2004-12/msg00120.html (15,765 bytes)
5. Re: really large files - import vs. use (score: 1): Author: Alan Zaslavsky <zaslavsk@hcp.med.harvard.edu>; Date: Thu, 16 Dec 2004 15:10:46 -0500 (EST); The read.table() function uses scan() to actually read the data (after getting the field headings, if any, from the first line). Note the following comment from the help file for scan(): As it reads; /archives/html/s-news/2004-12/msg00122.html (7,786 bytes)
6. Re: really large files - import vs. use (score: 1): Author: Tony Plate <tplate@blackmesacapital.com>; Date: Fri, 17 Dec 2004 09:19:11 -0700; Actually, read.table() does know the total size of the data set before invoking scan() -- because it invokes count.fields() on the file first. (I.e., it reads the file twice.) The number of records i; /archives/html/s-news/2004-12/msg00125.html (9,416 bytes)
7. Re: really large files - import vs. use (score: 1): Author: Glenn.Treacy@ILIM.COM; Date: Mon, 20 Dec 2004 13:20:32 -0000; se from 1/1950 to 11/2004. First questions: how do I add the S&P 500 mo; /archives/html/s-news/2004-12/msg00134.html (10,616 bytes)

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