[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Austin Nichols <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: exact command for distance ? |

Date |
Fri, 11 Sep 2009 11:52:25 -0400 |

Laura-- Just in case you thought I was being flip, let me assure you--I mean it--the distance to the nearest centroid (of bodies of water) is not a variable you can use for anything useful. However, if you have a file of polygons for bodies of water rather than a file of centroids, the method I outlined still works, finding then the distance to the nearest vertex, which is a good approximation of the distance to nearest water, and gets better as your polygon file gets more detailed. On Fri, Sep 11, 2009 at 9:28 AM, Austin Nichols <austinnichols@gmail.com> wrote: > > But are you using the centroids of the bodies of water? That seems > like a strange measure of the distance to water! > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: RE: exact command for distance ?***From:*Laura Platchkov <LMP881@bham.ac.uk>

**Re: st: RE: exact command for distance ?***From:*Austin Nichols <austinnichols@gmail.com>

- Prev by Date:
**st: retain indvar in -regress-** - Next by Date:
**st: R: sheafcoef command** - Previous by thread:
**Re: st: RE: exact command for distance ?** - Next by thread:
**RE: st: RE: exact command for distance ?** - Index(es):

© Copyright 1996–2015 StataCorp LP | Terms of use | Privacy | Contact us | What's new | Site index |