[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

From |
"Andreas Aschbacher" <aa_surf@gmx.at> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: improvement |

Date |
Tue, 10 Feb 2004 11:16:31 +0100 (MET) |

Dear fellows : In austrian centre of physics we use Stata to do LevenbergMarquardt(nl-command)since about four months,about 400 measurements were evaluated. we consider small (not infinitesimal) dosis-intervals and the number of persons who are exposed to these intervals - the following little program shows how to count the number of persons in certain intervals : /pos is ln(dosis-value) because then it seems to be Gauß-distribution without logarithmusnaturalis it is lognormal distribution - it is easier to reach convergence with Gauß-formula in most cases / local i = 3 while `i' <= 20 { count if pos >= `i' & pos < `i' + .05 display local i = `i' + .05 } * 3 - 3.05 -> 3.025 * 3.05 - 3.1 -> 3.075 * 3.1 - 3.15 -> 3.125 * 3.15 - 3.2 -> 3.175 * 3.2 - 3.25 -> 3.225 * 3.3 - 3.35 -> 3.325 this program counts and you get also zero if there is no value in interval - with these values I can obtain the following ascii-text-file : Ascii-Text-file : x y x...dosis-value in radioactive measurement y...number of counts 3.025 1 ->for example : 3.075 2 ............... two counts in interval 3.05 to 3.1 3.125 4 3.175 7 3.225 6 3.275 5 3.325 10 3.375 13 3.425 22 3.475 13 3.525 24 3.575 41 3.625 41 3.675 60 3.725 67 3.775 81 3.825 98 3.875 143 3.925 162 3.975 181 4.025 241 4.075 268 4.125 301 ... and so on my question : is there a way to get x-column and y-column simultaneously in a sheet(ascii) during counting ? - because I start my little counting-program and get the counted values on results-screen with one blank line after each count value,then I import in excel with copy/paste and add x-column after deleting all blank lines with a macro. complicated way isn't it ? then I have ascii-sheet with x-and y- column by copy and paste from excel- each help will be appreciated very much andreas -- GMX ProMail (250 MB Mailbox, 50 FreeSMS, Virenschutz, 2,99 EUR/Monat...) jetzt 3 Monate GRATIS + 3x DER SPIEGEL +++ http://www.gmx.net/derspiegel +++ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: improvement***From:*Edwin Leuven <e.leuven@uva.nl>

- Prev by Date:
**Re: st: Why does -anova- calculate repeated effects (F) twice?** - Next by Date:
**Re: st: improvement** - Previous by thread:
**st: confidence intervals to within and between theil** - Next by thread:
**Re: st: improvement** - Index(es):

© Copyright 1996–2016 StataCorp LP | Terms of use | Privacy | Contact us | What's new | Site index |