On 14 Aug 2003 at 10:12, Donald Burrill wrote: > On Wed, 13 Aug 2003, Top Spin wrote in part: > > > On 13 Aug 2003, [EMAIL PROTECTED] (Donald Burrill) wrote: > > > > >Why re-invent the wheel, and have to de-bug it besides? Get one of > > >the standard statistical analysis packages (SPSS, SAS, MINITAB, ...) > > >and use the multiple regression routine to fit your data to a > > >suitable model. > >
If you want on-line statistical analysis and the ability to integrate nicely with your own routines, you should have a look at the GPL'ed R (search google for CRAN)Is it at all possible to call your own C or Fortran from within minitab or SPSS? (Guess it would be possible with SAS, but not sure). Kjetil Halvorsen > > I certainly do not want to reinvent the wheel. I will eventually need > > custom code to run with my data live, ... > > "Running live" could mean operating continuously; but the nature of > statistical analysis rather requires a batch of data to work on. One > could be collecting data on a quasi-continuous basis, and every so often > (after 15 minutes, say, or after 25 new data points) invoke something > statistical to see whether your process is still following the same > decay model. One might also have something in place, based on the > current statistical model, to examine each new datum to see whether it > appears to depart worrisomely from the current model -- control chart > technology, essentially. > > > but your suggestion of using a > > commercial package to analyze existing data is a good one. > > The folks at Minitab Inc. (or SPSS, or ...) could probably tell you how, > and/or help you, to access the routine(s) you need as (a) > subroutine(s) to your data-gathering software. > Or vice versa, should that be preferable for some reason. > > > I have heard that Excel can do some statistical analyses. The help > > file says I need to install the Analysis Toolpak. Do you know how this > > compares with SPSS or Minitab? Can you recommend a good book on using > > Excel for this? > > Hmph. I cannot recommend Excel for this. Haven't worked with it > myself, but am told that the statistical routines in the Excel add-on(s) > are unsatisfactory in several respects, including (I believe) precision > of results and stability of algorithms. But I'll let colleagues on this > list who have more detailed information speak to that. > > Personally, if I were using Excel as a convenient means of gathering and > storing data, I'd output the data in a plain text file, then read that > file in MINITAB to carry out any statistical analyses; then extract > whatever I needed from the MINITAB output to adjust operating parameters > (or whatever) in the data-gathering mechanisms; and so on. > > < snip, the rest > > > Good luck! -- DFB. > ----------------------------------------------------------------------- > Donald F. Burrill [EMAIL PROTECTED] > 56 Sebbins Pond Drive, Bedford, NH 03110 (603) 626-0816 > > . > . > ================================================================= > Instructions for joining and leaving this list, remarks about the > problem of INAPPROPRIATE MESSAGES, and archives are available at: > . http://jse.stat.ncsu.edu/ . > ================================================================= . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
