From healthmaps@attbi.com Wed May 14 09:46:53 2003 Received: from mxu5.u.washington.edu (mxu5.u.washington.edu [140.142.32.164]) by lists.u.washington.edu (8.12.1+UW03.04/8.12.1+UW03.02) with ESMTP id h4EGkq1M045282 for ; Wed, 14 May 2003 09:46:52 -0700 Received: from rwcrmhc52.attbi.com (rwcrmhc52.attbi.com [216.148.227.88]) by mxu5.u.washington.edu (8.12.1+UW03.04/8.12.1+UW03.02) with ESMTP id h4EGklvw023601 for ; Wed, 14 May 2003 09:46:47 -0700 Received: from harriet (12-229-43-232.client.attbi.com[12.229.43.232]) by attbi.com (rwcrmhc52) with SMTP id <2003051416464705200a8uc4e>; Wed, 14 May 2003 16:46:47 +0000 From: "Richard Hoskins" To: Subject: RE: Estimating daytime population Date: Wed, 14 May 2003 09:46:36 -0700 Message-ID: <003001c31a38$654ad680$6401a8c0@harriet> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 In-Reply-To: <3EC24DC4.7020301@vdh.state.va.us> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 All of these responses are very useful. Thanks very much. As you might imagine it is about the issue of how do public health folks estimate the number of people in urban commerce areas if a terrorist attack occurs. Clearly the usual census data will not help too much. I will summarize as information appears. Richard E. Hoskins WA State Dept of Health 1102 Quince Street, ms 47812 Olympia, WA 98504-7812 richard.hoskins@doh.wa.gov 360/236-4270 fax: 360/236-4245 -----Original Message----- From: WAPHGIS-owner@u.washington.edu [mailto:WAPHGIS-owner@u.washington.edu] On Behalf Of Kevin Byrnes Sent: Wednesday, May 14, 2003 7:08 AM To: waphgis@u.washington.edu Subject: Re: Estimating daytime population Importance: High Dick: As a former regional transportation planner, I can answer that question! There is a special census product call the Census Transportation Planning Package. Work Destinations and occupations are cross-referenced with work origins to create data tables on the employment by urban traffic zones in metropolitan areas. You can get 1990 data for free (project subsidized by FHWA & UMTA) from this page: http://landview.census.gov/mp/www/rom/msrom6a.html From my experience working with the 1990 data and traffic zone polygon files, there were some coding problems in some areas in building the traffic zone geography from census tract , block group and block specifications. This would be one area where I would hope there is some great improvement resulting from pre-200 census advances in TIGER The 2000 data package hasn't been finalized but the product is supposed to be released this year....to monitor status: visit this link: http://www.transtats.bts.gov/DatabaseInfo.asp?DB_ID=620&Link=0 More info table specs) from this link: http://www.transtats.bts.gov/tables.asp?DB_ID=620&DB_Name=&DB_Short_Name = It might interest you to know that this program was implemented initially in 1990 under a speical contract for a data viewer version of Maptitude. It might be worth an exploratory e-mail to Peter to see if they have any plans of obtaining an packaging the data for a special Maptitude-ready data cd...it would be very worthwhile, n my opinion. Of course, there are commercially-available daytime population estimates from various sources, developed through various methodologies as well. Hope this is helpful.... Your East Coast Connection.... Kevin B Richard Hoskins wrote: >Is there anything in the census data that can allow some estimate of >the daytime population in a business area, such as downtown Seattle? >The census data says there are 31000 residents, but of course at 11am >on Monday, it is very different. Any ideas? > >Richard E. Hoskins >WA State Dept of Health >1102 Quince Street, ms 47812 >Olympia, WA 98504-7812 >richard.hoskins@doh.wa.gov >360/236-4270 >fax: 360/236-4245 > > > > > > .