From rhoskins@home.com Mon Nov 29 07:13:19 1999 Received: from mxu3.u.washington.edu (mxu3.u.washington.edu [140.142.33.7]) by lists.u.washington.edu (8.9.3+UW99.09/8.9.3+UW99.09) with ESMTP id HAA20536 for ; Mon, 29 Nov 1999 07:13:18 -0800 Received: from mail.rdc1.wa.home.com (imail@ha1.rdc1.wa.home.com [24.0.2.66]) by mxu3.u.washington.edu (8.9.3+UW99.09/8.9.3+UW99.08) with ESMTP id HAA19140 for ; Mon, 29 Nov 1999 07:13:17 -0800 Received: from c501522a ([24.5.121.123]) by mail.rdc1.wa.home.com (InterMail v4.01.01.00 201-229-111) with SMTP id <19991129151316.LBUJ22653.mail.rdc1.wa.home.com@c501522a>; Mon, 29 Nov 1999 07:13:16 -0800 Message-ID: <004301bf3a7c$2ad71e40$7b790518@olmpi1.wa.home.com> From: "Dick Hoskins" To: "WHO GIS" , , "WAPHGIS" Subject: Common perimeter percentage Date: Mon, 29 Nov 1999 07:12:35 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0040_01BF3A39.1C8469D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 This is a multi-part message in MIME format. ------=_NextPart_000_0040_01BF3A39.1C8469D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Couldn't get anyone to bite on this, try again:=20 In MapInfo suppose I have a coverage of Zipcodes (postcodes) I need to = produce a table that tells me the 1,2,3,4,5 order nearest neighbors, the = intercentroid distances, and for the 1st order nearest neighbors, the = length of the common perimeter of neighbors, and the percentage of the = perimeter.=20 I think I can figure out the nearest neighbor part, and the various = orders of nearest neighbors, but getting the percentage or length of the = common perimeter is evading me. Has occurred to me that it might be best = to work with a MIF file, but its not clear (to me) how that is = structured.=20 I am looking for a general way to proceed. MapInfo has a distance = function and a perimeter function.=20 This is to be done in order to build a GLM for spatial autocorrelation = of disease incidence.=20 Thanks Dick Hoskins rhoskins@home.com ------=_NextPart_000_0040_01BF3A39.1C8469D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Couldn't get anyone to bite on this, try again:

In MapInfo suppose I have a coverage of Zipcodes=20 (postcodes) I need to produce a table that tells me the 1,2,3,4,5 = order=20 nearest neighbors, the intercentroid distances, and for the 1st order = nearest=20 neighbors, the length of the common perimeter of neighbors, and the = percentage=20 of the perimeter.

I think I can figure out the nearest neighbor part, and the various = orders=20 of nearest neighbors, but getting the percentage or length of the common = perimeter is evading me. Has occurred to me that it might be best to = work with a=20 MIF file, but its not clear (to me) how that is structured.

I am looking for a general way to proceed. MapInfo has a distance = function=20 and a perimeter function.

This is to be done in order to build a GLM for spatial = autocorrelation of=20 disease incidence.

Thanks

Dick Hoskins
rhoskins@home.com

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