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2560 discussions

Re: [CTPP] Question regarding census geography

by Peter H. Van Demark

Chris: By the way, TransCAD users get one set of SF 1 and State Data CDs free, by request, per license. There will a similar program for the SF 3 Data CDs, when those data become available this summer. Peter ---------------------------------------------------------------- Peter Van Demark Director of GIS Products and Training Phone: 617-527-4700 Caliper Corporation Fax: 617-527-5113 1172 Beacon Street E-mail: peter(a)caliper.com Newton MA 02461-9926 Web site: http://www.caliper.com

22 years, 7 months

Re: [CTPP] Question regarding census geography

by Peter H. Van Demark

Chris: >When will 2000 census data be released for census geography (Tracts, block >groups, blocks) for the state of Kansas and where do I find it? The SF 1 (short form) data are already available. You can get the raw data at the Census Bureau web site. Caliper Corporation has two sets of Data CDs for use with its GIS products, each with data organized by state. One set has the SF 1 tables and a Table Chooser for easy access, and the other has all of the geographic files from state to block boundaries. For more information on the SF 1 Data CDs visit (http://www.caliper.com/DataCDs/SF1DataCD.htm), and for more information on the State Data CDs, visit (http://www.caliper.com/DataCDs/StateDataCD2000.htm). We will be producing SF 3 (long form) Data CDs, also by state, when those data come out this summer. All of these Data CDs cost $195 each, plus shipping. Peter ---------------------------------------------------------------- Peter Van Demark Director of GIS Products and Training Phone: 617-527-4700 Caliper Corporation Fax: 617-527-5113 1172 Beacon Street E-mail: peter(a)caliper.com Newton MA 02461-9926 Web site: http://www.caliper.com

22 years, 7 months

Question regarding census geography

by Chris Herrick

When will 2000 census data be released for census geography (Tracts, block groups, blocks) for the state of Kansas and where do I find it?

22 years, 7 months

Procedure for Creating 2000 Urbanized Area GIS Layer

by Daryl Scott

I used the following procedure to create the urbanized area GIS layer for the Bridgeport-Stamford-CT, NY urbanized area. Because I already had Census Blocks in my GIS system, I only wanted a table that would allow me to join the urbanized area information to the Census Blocks. Perhaps the following procedure and sample file will help others generate maps of the new urbanized areas. I am a busy person and apologize in advance for the hastily written directions. * Download UA TIGER/Line files. * Rename tgrxxxxxx.rta to tgrxxxxxxa.txt * Rename tgrxxxxxx.rts to tgrxxxxxxs.txt <<ua2000_example.zip>> * Rename tgrxxxxxx.rtc to tgrxxxxxxc.txt * * The xxxxxx is the state and county fips code. * * Open the Access file. * Choose File -> Get External Data -> Import... * Select the tgrxxxxxxa.txt text file and click the "Import" button. * Click the "Advanced" Button. * Click the "Specs..." Button. * Choose the "Tgr09001a Import Specification" * Click "OK". * If you do not mind Access automatically inserting a primary key, simply click "Finish". Otherwise, work through the wizard and choose the appropriate options. * * Repeat the above process for the record type s and record type c files. Use the "Tgr09001c Import Specification" for tgrxxxxxxc.txt and "Record Type S Import Specification3" for the tgrxxxxxxs.txt. * * At this point, all the necessary information is now in Access. * Copy the "UrbanRuralBlocks09005" query to a different name. * Edit the query in SQL view and rename the table names to match the table names of the tables for one county. Afterwards, display the query in datasheet view. At this point, I would compare the number of records in the table to the number of blocks in the cooresponding GIS layer. I would also check to make sure that the urbanized area names make sense. If there are any irregularities, you will need to correct mistakes in the query. If the results are correct, then you can join the results to the Census Blocks in GIS software. The table can be exported to a dBase IV file or text file. In some cases, you can connect the Access database to the GIS software directly or through ODBC. Once the join is performed, you can perform spatial aggregation to get the anticlimactic urbanized area GIS layer. Good luck, Daryl Scott -- Daryl Scott South Western Regional Planning Agency Stamford Government Center 888 Washington Blvd., 3rd Floor Stamford, CT 06901 Tel: (203) 316-5190 Fax: (203) 316-4995 E-mail: dscott(a)swrpa.org

22 years, 7 months

RE: [CTPP] question to list regarding study area boundary.

by Gardner, John F

We have similar issues in SC. You have some flexibility. Key question is whether your population projections for your plan horizon year produce the necessary densities for the [Saraland?] urban cluster to become part of the [I assume it's Mobile] Urbanized Area, or will it remain non-contiguous with Mobile? You may have to expand your population projections to include all of Mobile County (or at least the UC in question) to make a reasonable determination of that. Your study area boundary has to include "the UZA(s) and the contiguous geographic areas likely to become urbanized within the 20-year forecast period covered by the transportation plan . . ." {23 CFR 450.306(a)}. So if the urban cluster is "likely" to be part of the CONTIGUOUS Mobile Urbanized Area (based on future population density) in 20 years, you should include it in the MPO study area. If it doesn't become contiguous, you don't have to include it, but you do have the flexibility to include as much of the MSA as you want. You should also consider whether the UC will be included in your nonattainment area, if that's an issue in Mobile. Hope that helps. That's how we hope to evaluate new boundaries, by looking at the projected population densities in areas being considered for inclusion to be sure that the densities actually are urban and the area is contiguous. John Gardner, AICP SCDOT Office of Planning gardnerjf(a)dot.state.sc.us -----Original Message----- From: kharrison [mailto:kharrison@sarpc.org] Sent: Friday, May 17, 2002 1:41 PM To: ctpp-news(a)chrispy.net Subject: [CTPP] question to list regarding study area boundary. I have a question regarding MPO study area boundary. Our existing MPO covers 1 urban area. 3 miles from the new urban area boundary there is a newly designated urban cluster. Our existing study area boundary bisects the new urban cluster. We are looking at our options for expanding the MPO study area boundary. Would we have to include the entire adjacent urban cluster or can our study area be adjacent to or bisect the urban cluster? Since by definition the MPO study area is supposed to include all the area that will be urbanized within 25 years, can it exclude or bisect an adjacent urban cluster? Kevin Harrison Transportation Planner South Alabama Regional Planning Commission 651 Church St Mobile, AL 36602 251.433.6541

22 years, 7 months

smoothing UAs

by fdearagon＠tompkins-co.org

I've heard a couple of references to 'smoothing' the urban area boundaries. What is the policy and procedure on this issue?? Fernando de Aragon ITCTC, Director ================== ================== Fernando de Aragon, AICP Director Ithaca-Tompkins County Transportation Council 121 E. Court St. Ithaca, NY 14850 phone: 607-274-5570 fax: 607-274-5578 ITCTC(a)tompkins-co.org www.tompkins-co.org/itctc

22 years, 7 months

Impact of New UA definition to FTA funds

by Elaine Murakami

FTA has just posted a series of FAQs addressing many issues regarding 5307, 5310, 5311, and 5309 funds. It includes responses to questions regarding operating assistance in areas which were in urbanized areas below 200,000 which have now been incorporated into areas with 200,000 and over population. http://www.fta.dot.gov/library/planning/census/faq.html The web includes links to appropriate FTA staff regarding specific topics. Enjoy! Elaine Murakami FHWA

22 years, 7 months

RE: [CTPP] UZA's, UC's and Functional Classification

by Gardner, John F

Would "smoothing" include eliminating the "holes" in doughnuts?? In SC, where sprawl is rampant, we have several instances where either 1) the urban area extends as narrow strips along several highway corridors and completely encloses a rural area; 2) two urban areas are separated by a very narrow strip of less than a mile (Greenville and the new "Mauldin-Simpsonville" UA); 3) urban areas or urban clusters are separated by a narrow gap (<1 mi.) in a major highway corridor. If the "smoothing" doesn't address all of these, we'll wind up with functional classifications that bounce repeatedly between urban and rural over a relatively short distance. John Gardner SCDOT Office of Planning -----Original Message----- From: Gorman, Robert <FHWA> [mailto:Robert.Gorman@fhwa.dot.gov] Sent: Thursday, May 16, 2002 2:05 PM To: ctpp-news(a)chrispy.net; millef1(a)mail.modot.state.mo.us Subject: Re: [CTPP] UZA's, UC's and Functional Classification Our office has not developed a timetable for completing the functional reclassification. But now that the maps are available states should begin working on it. We do not intend to modify the Census boundaries. However, states and locals could propose smoothing the boundaries (provided that it includes everything that Census has included). We also provided some flexibility in our Addendum to the Functional Classification Manual to allow states to make the urban rural changes at the nearest logical point (road intersection) rather than between intersections. >>> millef1(a)mail.modot.state.mo.us 05/14/02 04:58PM >>> Now that we have new urbanized boundaries, does FHWA have a timetable for updating functional classification of roadways? Beyond the shift of the arterials between urban and rural, we have rural minor collectors that may need to be reclassified as an urban collector (and urban collector could easily be a rural major collector). Will FHWA modify the census definition of urban for functional classifications? I haven't seen a map or our areas yet, but I'm guessing there will be roadways with the urban-rural boundary split down the middle of the road. There are also areas with a very urban character that will likely be designated rural because there is no population density. Frank Miller Missouri Department of Transportation - District 8

22 years, 7 months

Re: [CTPP] UZA's, UC's and Functional Classification

by Gorman, Robert <FHWA>

Our office has not developed a timetable for completing the functional reclassification. But now that the maps are available states should begin working on it. We do not intend to modify the Census boundaries. However, states and locals could propose smoothing the boundaries (provided that it includes everything that Census has included). We also provided some flexibility in our Addendum to the Functional Classification Manual to allow states to make the urban rural changes at the nearest logical point (road intersection) rather than between intersections. >>> millef1(a)mail.modot.state.mo.us 05/14/02 04:58PM >>> Now that we have new urbanized boundaries, does FHWA have a timetable for updating functional classification of roadways? Beyond the shift of the arterials between urban and rural, we have rural minor collectors that may need to be reclassified as an urban collector (and urban collector could easily be a rural major collector). Will FHWA modify the census definition of urban for functional classifications? I haven't seen a map or our areas yet, but I'm guessing there will be roadways with the urban-rural boundary split down the middle of the road. There are also areas with a very urban character that will likely be designated rural because there is no population density. Frank Miller Missouri Department of Transportation - District 8

22 years, 7 months

RE: [CTPP] UA TIGER/Line files now available

by Sweson Yang

Dear Haila, In the interests of objectivity and consistency, the Census 2000 Urban Areas are no longer land use classifications. Parks and Industrial Areas are no longer "Urban". The Urbanized Area is a group of contiguous Census Blocks or Block Groups with high population density as defined by the Census Bureau's Geographic Information System called TIGER. "Rural" are areas of low density Census Blocks. I know it will be difficult to explain but we just have to deal with it. I hope this brief explanation helps. Cheers. Sweson Yang, AICP Chief Transportation Planner Indianapolis Metro Planning Organization 200 E. Washington St., Suite 1841 Indianapolis, IN 46204 (317) 327-5137

22 years, 8 months

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