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From |
"Roger B. Newson" <r.newson@imperial.ac.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks? |

Date |
Sat, 06 Oct 2012 21:13:49 +0100 |

I hope this is helpful. Best wishes Roger Roger B Newson BSc MSc DPhil Lecturer in Medical Statistics Respiratory Epidemiology and Public Health Group National Heart and Lung Institute Imperial College London Royal Brompton Campus Room 33, Emmanuel Kaye Building 1B Manresa Road London SW3 6LR UNITED KINGDOM Tel: +44 (0)20 7352 8121 ext 3381 Fax: +44 (0)20 7351 8322 Email: r.newson@imperial.ac.uk Web page: http://www.imperial.ac.uk/nhli/r.newson/ Departmental Web page: http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/ Opinions expressed are those of the author, not of the institution. On 06/10/2012 20:51, Nick Cox wrote:

The methodology for nice numbers is broadly similar to that described in STB-25 dm28 . . . Calculate nice numbers for labeling or drawing grid lines (help nicenum if installed) . . . . . . . . . . . . . . . J. W. Hardin 5/95 pp.2--3; STB Reprints Vol 5, pp.19--20 Otherwise I doubt that there is any on-line documentation of the kind you seek. Nick On Sat, Oct 6, 2012 at 7:46 PM, Michael Stepner <michaelstepner@gmail.com> wrote:I'm trying to find a description of the formula or algorithm Stata uses to set the default look of a scatter plot's axes: how it chooses the default range and tick marks. I've searched online and in the Stata manual, but haven't found any details. I've read that Stata chooses approximately 5 "nice values" for the tick marks, but haven't found any indication of how those "nice values" are selected. If anyone could point me to a detailed description of the methodology for selecting the nice defaults, it would be greatly appreciated! Even if it's just pointing me to some code where these defaults are calculated and implemented, that would be a great help.* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?***From:*Michael Stepner <michaelstepner@gmail.com>

**Re: st: Formula/algorithm Stata uses to calculate default axis ranges and tick marks?***From:*Nick Cox <njcoxstata@gmail.com>

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