Hi Phil, Congrats on the R package and for helping make others aware of the need for said KS correction! Nice work.
I'm sure you're already aware of this, but just in case, and for clarification,... Lilliefors' Kolmogorov-Smirnoff test is already implemented in the 'lillie.test' function of the nortest R package. This test is also already implemented in the R package EnvStats, in its 'gofTest' function (i.e. gofTest(y, ..., test='lillie')). Interested parties might like to know, Does the development of your package predate these, or does it imply that the test is performed incorrectly in these existing packages? Take care. Best, Justin Justin C. Bagley, Ph.D. Postdoctoral Research Associate Department of Biology University of Missouri-St. Louis One University Boulevard, 223 Research Building St. Louis, MO 63121-4499 E-mail: bagl...@umsl.edu Website: https://justinbagley.org CV: https://justinbagley.org/pages/cv.html Blog: https://justinbagley.rbind.io Affiliate Researcher Department of Biology Virginia Commonwealth University 1000 W Cary St, Rm 126, Richmond, VA 23284-2012 On Thu, Jan 31, 2019 at 11:53 AM Novack-Gottshall, Philip M. < pnovack-gottsh...@ben.edu> wrote: > Thanks, Justin! I've checked out whichever help docs I can find, but I've > discovered that sometimes a particular "correct" is not always mentioned, > even when used in the software. > > The reason I'm checking is that I'm a co-author on an R package (LcKS) > that implements the Lilliefors correction for the one-sample > goodness-of-fit Kolmogorov-Smirnoff test and we're writing a manuscript to > accompany it. Apparently the correction is not widely used or known about > (outside of the statistical community), and it's a major oversight. (For > example, ks.test in R [very subtly] cautions the user about the violation > but does not actually offer a fix, and it's not available in base R or > 'stats'.) We've discovered many published articles that appear to do the > test in the incorrect manner. Our package and manuscript, we hope, will > help improve the situation by calling attention to the bias and offering a > simple solution. > > Best wishes, > Phil > > On 1/31/2019 11:46 AM, Justin Bagley wrote: > > Dear Phil, > > SAS has excellent support and documentation. Just go to their website at > https://support.sas.com/en/documentation.html, type in a search query for > the statistical test of interest, and you'll get links to the appropriate > section of the SAS/STAT 14.3 User's Guide. Detailed information is given on > statements to call different tests. You should be able to quickly find the > information you need using this procedure (with a statistics text in hand), > and I imagine that similar online documentation resources are available for > the other major programs that you mentioned. > > Nevertheless, all in all, I don't recommend that you go with _any_ of the > software programs in your list for statistical analyses of biological data, > unless they are the only software programs that implement the test you > need. Instead, I suggest that you conduct statistical analyses in the R > environment for statistical computing (https://cran.r-project.org) or > write bash or Python wrapper scripts around existing programs to conduct > your analyses. Is there not an R package that will conduct the test you > need to do? > > Since we received this through MORPHMET, perhaps you could state the > question you have about the "particular statistical test" in question in a > way that is specific and that relates to morphometrics, and I'm sure that > someone would be able to help you out in more detail. > > Good luck. > > Best, > > Justin C. Bagley, Ph.D. > Postdoctoral Research Associate > Department of Biology > University of Missouri-St. Louis > One University Boulevard, 223 Research Building > St. Louis, MO 63121-4499 > E-mail: bagl...@umsl.edu > Website: https://justinbagley.org > CV: https://justinbagley.org/pages/cv.html > Blog: https://justinbagley.rbind.io > > Affiliate Researcher > Department of Biology > Virginia Commonwealth University > 1000 W Cary St, Rm 126, > Richmond, VA 23284-2012 > > > > On Thu, Jan 31, 2019 at 11:04 AM Novack-Gottshall, Philip M. < > pnovack-gottsh...@ben.edu> wrote: > >> Hi all, >> >> Apologies for cross-posting, but I'm not sure where this best lands. >> >> I'm trying to find people who have access to (preferably some experience >> with) any of the following statistical software programs: >> -MiniTab >> -SAS >> -SPSS >> -S-Plus >> -STATA >> -SYSTAT >> >> If you do, might you contact me off-list <pnovack-gottsh...@ben.edu>? >> I'm trying to find out how each program handles a particular statistical >> test. My question can likely be answered with a quick check of the help >> documentation for the software or by running a sample data set I can >> provide, if interested. >> >> Thanks, >> Phil >> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> Phil Novack-Gottshall, PhD >> Professor pnovack-gottsh...@ben.edu >> Department of Biological Sciences >> Benedictine University >> 5700 College Road >> Lisle, IL 60532 >> >> Office: 332 Birck Hall >> Lab: 316 Birck Hall >> Phone: 630-829-6514 >> Fax: 630-829-6547 >> https://pnovack-gottshall.wixsite.com/home >> >> Spring 2019 office hours: Tues/Thurs 9:30-11:00 AM >> Wed 10 AM - 12:15 PM >> >> If you have urgent academic advising questions, please contact >> Anne Baysinger (Birck 130) >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> >> -- >> MORPHMET may be accessed via its webpage at http://www.morphometrics.org >> --- >> You received this message because you are subscribed to the Google Groups >> "MORPHMET" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to morphmet+unsubscr...@morphometrics.org. >> >> > -- > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Phil Novack-Gottshall, PhD > Professor pnovack-gottsh...@ben.edu > Department of Biological Sciences > Benedictine University > 5700 College Road > Lisle, IL 60532 > > Office: 332 Birck Hall > Lab: 316 Birck Hall > Phone: 630-829-6514 > Fax: 630-829-6547 > https://pnovack-gottshall.wixsite.com/home > > Spring 2019 office hours: Tues/Thurs 9:30-11:00 AM > Wed 10 AM - 12:15 PM > > If you have urgent academic advising questions, please contact > Anne Baysinger (Birck 130) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. 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