CTPP December 2010

ctpp@listserv.transportation.org

21 participants
20 discussions

RE: [CTPP] mode to work by small workplace geographies

by Mara Kaminowitz

For ACS 2005-2009, table B08301 has means of transportation to work including car only, carpool, and various types of public transportation. Just watch those MOE's. Mara Kaminowitz GIS Analyst ......................................................................... Baltimore Metropolitan Council Offices at McHenry Row 1500 Whetstone Way Suite 300 Baltimore, MD 21230 410-732-0500 ext. 1030 <mailto:mkaminowitz(a)baltometro.org> mkaminowitz(a)baltometro.org <http://www.baltometro.org/> www.baltometro.org _____ From: Mark.Byram(a)dot.state.oh.us [mailto:Mark.Byram(a)dot.state.oh.us] Sent: Tuesday, December 28, 2010 9:37 AM To: ctpp-news(a)chrispy.net Subject: RE: [CTPP] mode to work by small workplace geographies I recently got the following question from our bike and ped coordinator. I'm a bit rusty as I have not used census in a while so I thought I'd throw it out there for all you census experts to see how you would respond. What dataset is the best to look at to see how many people within a project area do not take a car to work and/or own a car? Mark

14 years, 7 months

RE: [CTPP] mode to work by small workplace geographies

by Elaine.Murakami＠dot.gov

Hi Everyone! Hope you had a relaxing weekend! Tables for small geography at the WORKPLACE. The ACS tables for 2005-2009 (5 - year summary) do NOT have small geography "for workplace geography." This kind of table will be available in the CTPP 5-year (2006-2010) which we expect in 2012. The reason is that the Census Bureau's regular geocoding for workplaces only goes down to county and place. About 25% of responses do not have sufficient detail for block level geocoding, therefore an imputation routine is required to report workplace at tract or blockgroup geography. We call this imputation routine "extended workplace allocation" and the work is currently being developed for the CTPP. Once it is in place for the CTPP 2006-2010, we hope that the Census Bureau will be able to apply it for the ACS standard products. Historically, the CTPP was the only decennial census "long form" product that included tabulation for workplace geography and for the flow between home and work. I was glad to see that the ACS Office started to include workplace tabulations in the ACS standard table set. Elaine Murakami FHWA Office of Planning, Wash DC 206-220-4460 (in Seattle) As you probably know, the CTPP 2006-2010 will have additional small area data that is synthetic or "modeled." This is NCHRP 08-79 project, in progress by Westat. This work is to avoid the heavy data suppression we expected given the CB requirement to protect individual confidentiality, and some of the small shares of specific commute modes that increase the probability of matching to a unique record. The job is to develop models that retain the characteristics of the original data, so that the resulting data is still usable for transportation planning, but still protects individual confidentiality. Because the work is done at the Census Bureau, the perturbed data can be compared to the original data. From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Flintoft, Anna E. Sent: Monday, December 27, 2010 6:49 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] mode to work by small workplace geographies Does anyone know when the census will release mode of transportation to work by smaller workplace geographies than place? I was disappointed that the 2005-2009 ACS didn't have it. Coming up with a work trip mode split for downtown is something people ask us about all the time. Thanks. * * * * * * * * * * * * * * * * * * * * * * * * Anna Flintoft, PTP Transportation Planner Department of Public Works - Transportation Planning and Engineering City of Minneapolis Room 301, City of Lakes Building 309 2nd Avenue South Minneapolis, MN 55401 (612) 673-3885 (office) (612) 269-9410 (cell) anna.flintoft(a)ci.minneapolis.mn.us * * * * * * * * * * * * * * * * * * * * * * * *

14 years, 7 months

Re: [CTPP] ACS 2005-09 data

by Krishnan Viswanathan

Look here for details: http://www.census.gov/acs/www/guidance_for_data_users/handbooks/ <http://www.census.gov/acs/www/guidance_for_data_users/handbooks/> and the document what Researchers need to know will help you too: http://www.census.gov/acs/www/Downloads/handbooks/ACSResearch.pdf On Tue, Dec 21, 2010 at 10:22 AM, Jason Gillow <jason.gillow(a)ovrdc.org>wrote: > Hello > > I was wondering how do you handle combining different geographic areas with > each other to form a regional profile. For example, my office is a regional > planning organization that serves 12 counties. I want to take the profile > data from ACS 2005-09 5-year estimates for each county and form a profile of > my regional, I know how to combine the estimates and do the percentages, but > how do I handle the margin of error columns? Is there their a reference or > guidance on this? > > Thank you > Jason > > Jason Gillow > Research/Planning Specialist II > Ohio Valley Regional Development Commission > 9329 St Rt 220 E, Suite A > Waverly, OH 45690 > Phone: 740-947-2853 or 800-223-7491 (In Ohio) > Fax: 740-947-3468 > www.ovrdc.org > Email: jgillow(a)ovrdc.org > > > _______________________________________________ > ctpp-news mailing list > ctpp-news(a)chrispy.net > http://www.chrispy.net/mailman/listinfo/ctpp-news > -- Krishnan Viswanathan 1101 High Meadow Dr Tallahassee FL 32311

14 years, 7 months

[CTPP] ACS 5-year Summary File retrieval tool

by Elaine.Murakami＠dot.gov

Hi Everyone-- Brian McKenzie at the Census Bureau provided this information on viewing files in Excel to help those of you when you download the tract or block group data from the "summary file" format, instead of the AFF. Please be sure to share your experiences with analyzing the new 2005-2009 ACS data with the CTPP listserv. Thanks in advance. Elaine ________________________________ From: brian.mckenzie(a)census.gov [mailto:brian.mckenzie(a)census.gov] The Excel-based retrieval tool that I mentioned yesterday can be access via the following page. Once you http://www.census.gov/acs/www/data_documentation/summary_file/ <http://www.census.gov/acs/www/data_documentation/summary_file/> . Below this link is the user guide. You just download the excel file with the macro built into it onto your hard drive, and you can view any SF table in Excel format rather than having to deal with ASCII files.

14 years, 7 months

[CTPP] mode to work by small workplace geographies

by Flintoft

Does anyone know when the census will release mode of transportation to work by smaller workplace geographies than place? I was disappointed that the 2005-2009 ACS didn't have it. Coming up with a work trip mode split for downtown is something people ask us about all the time. Thanks. * * * * * * * * * * * * * * * * * * * * * * * * Anna Flintoft, PTP Transportation Planner Department of Public Works - Transportation Planning and Engineering City of Minneapolis Room 301, City of Lakes Building 309 2nd Avenue South Minneapolis, MN 55401 (612) 673-3885 (office) (612) 269-9410 (cell) anna.flintoft(a)ci.minneapolis.mn.us * * * * * * * * * * * * * * * * * * * * * * * *

14 years, 7 months

RE: [CTPP] ACS 2005-09 comparisons with 2000 SF3

by edc＠berwyned.com

This is one of those points of speculation and spin. If you ask the CB the official line will be that it is so big and contains literally mountains of tables that it is impractical to serve up with an online search engine. They will tell you that comments on this were asked for in the Federal Register and there was not a huge outcry. However, if you "put your ear to the ground" you will hear some speculate that it is because the tables are so hard to work with due to confidentiality suppression and large margins of errors that the CB wanted to keep the data from the "novice" user. As one noted user put it, "they are putting the data on the top shelf just out of reach of the kids." What would be of use here is for people who have begun to work with it to share their experiences. Form the CB press release today... The U.S Census Bureau is pleased to announce the release of the 2005-2009 American Community Survey (ACS) 5-year estimates on American FactFinder. There you will find tables with social, demographic, housing, and economic data for areas down to the census tract level. You can access the newly-released data on American FactFinder at: 2005-2009 ACS 5-year data http://factfinder.census.gov/servlet/DatasetMainPageServlet?_program=ACS&_s… > Does anyone know why the Block Group data is not being released via the > AFFâs standard pull-down menus? I was under the impression that today > (12/14) was the release date for this data. I understand that it is > available via Summary File, but this is far from user friendly. > > > > When will the data be available via the AFFâs standard access method? > > > > Thank you, > > Nick Lindeman > > > > Nicholas Lindeman > Economic & Systems Data Analyst > > Nashville Area MPO > 800 2nd Ave. S. > > P.O. Box 196300 > Nashville, TN 37219-6300 > (615) 862-7198 > lindeman(a)nashvillempo.org > http://www.nashvillempo.org <http://www.nashvillempo.org/> > > > > > > > > From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] > On Behalf Of Elaine.Murakami(a)dot.gov > Sent: Tuesday, December 07, 2010 4:15 PM > To: ctpp-news(a)chrispy.net > Subject: FW: [CTPP] ACS 2005-09 comparisons with 2000 SF3 > > > > Correction to my earlier email: 2005-2009 ACS Block Group data WILL be > released on December 14. > > > > From: brian.mckenzie(a)census.gov [mailto:brian.mckenzie(a)census.gov] > > Good Afternoon Mara and Elaine, > The summary file data (block group level data) will be available on > December 14th. You can use American Factfinder as a portal. You will be > able to download summary file data via the FTP website at > <http://www2.census.gov/acs2009_5yr/summaryfile/ > <http://www2.census.gov/acs2009_5yr/summaryfile/> >. There will also be a > clickable link next to the familiar portion of AFF in which you select the > desired ACS year(s) for which you would like data. Hope this helps. > > Brian McKenzie > Analyst, Journey to Work and Migration Statistics Branch > U.S. Census Bureau > 301-763-6532 > brian.mckenzie(a)census.gov > > > > _______________________________________________ > ctpp-news mailing list > ctpp-news(a)chrispy.net > http://www.chrispy.net/mailman/listinfo/ctpp-news >

14 years, 7 months

RE: [CTPP] Mapping America using ACS2005-2009 from NY Times

by Liang.Long＠dot.gov

Margins of error around ACS 5-year estimates is about 1.75 times as large as those associated with the 2000 Census Long Form estimates. I assume NY Time's maps (percentage changes) already accounted for MOEs. But it would be nice to put a MOE note for those absolute numbers they are presenting. From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Nancy Jones Sent: Wednesday, December 15, 2010 12:14 PM To: ctpp-news(a)chrispy.net Subject: RE: [CTPP] Mapping America using ACS2005-2009 from NY Times Hi Liang and others: I agree that the interactive map they put together is amazing. However, I am interested to know what everyone thinks about their exclusion of margins of error. Note, they did present change since 2000 for the measures they show, with no mention of MOE's. Thoughts? Nancy Nancy Jones Data Manager Baltimore Neighborhood Indicators Alliance - Jacob France Institute University of Baltimore http://www.ubalt.edu/bnia <http://www.bniajfi.org/> njones(a)ubalt.edu 410-837-4015 From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long Sent: Wednesday, December 15, 2010 11:04 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times I was reading the NY Times on my way to work today and found out there are a serious of articles about ACS2005-2009. The most amazing thing is that they developed this interactive map at the Census Tract level for the whole nation. The maps show household income, home value, education and race and ethnicity at each tract and also the percentage change from the Census 2000. Here is the link. You got to check this out! http://projects.nytimes.com/census/2010/explorer?ref=us <http://projects.nytimes.com/census/2010/explorer?ref=us> Liang Long Cambridge Systematics, Inc. 4800 Hampden Lane Suite 800 Bethesda, MD 20814 tel 301 347 9141 fax 301 347 0101 FHWA 202-366-6971 e-mail llong(a)camsys.com www.camsys.com

14 years, 7 months

RE: [CTPP] Mapping America using ACS2005-2009 from NY Times

by Ali Bonakdar

That is fascinating Thanks for sharing Ali Bonakdar, AICP Director Corvallis Area Metropolitan Planning Organization 301 SW. 4th Street, #140 Corvallis, OR 97333 Ph: (541) 758-1911 Fax: (541) 758-3127 Email: abonakda(a)ocwcog.org<mailto:abonakda(a)ocwcog.org> Web: www.corvallisareampo.org<http://www.corvallisareampo.org/> ________________________________ From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long Sent: Wednesday, December 15, 2010 8:04 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times I was reading the NY Times on my way to work today and found out there are a serious of articles about ACS2005-2009. The most amazing thing is that they developed this interactive map at the Census Tract level for the whole nation. The maps show household income, home value, education and race and ethnicity at each tract and also the percentage change from the Census 2000. Here is the link. You got to check this out! http://projects.nytimes.com/census/2010/explorer?ref=us Liang Long Cambridge Systematics, Inc. 4800 Hampden Lane Suite 800 Bethesda, MD 20814 tel 301 347 9141 fax 301 347 0101 FHWA 202-366-6971 e-mail llong(a)camsys.com www.camsys.com

14 years, 7 months

RE: [CTPP] Mapping America using ACS2005-2009 from NY Times

by Nancy Jones

Hi Liang and others: I agree that the interactive map they put together is amazing. However, I am interested to know what everyone thinks about their exclusion of margins of error. Note, they did present change since 2000 for the measures they show, with no mention of MOE's. Thoughts? Nancy Nancy Jones Data Manager Baltimore Neighborhood Indicators Alliance - Jacob France Institute University of Baltimore http://www.ubalt.edu/bnia <http://www.bniajfi.org/> njones(a)ubalt.edu 410-837-4015 From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang Long Sent: Wednesday, December 15, 2010 11:04 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] Mapping America using ACS2005-2009 from NY Times I was reading the NY Times on my way to work today and found out there are a serious of articles about ACS2005-2009. The most amazing thing is that they developed this interactive map at the Census Tract level for the whole nation. The maps show household income, home value, education and race and ethnicity at each tract and also the percentage change from the Census 2000. Here is the link. You got to check this out! http://projects.nytimes.com/census/2010/explorer?ref=us <http://projects.nytimes.com/census/2010/explorer?ref=us> Liang Long Cambridge Systematics, Inc. 4800 Hampden Lane Suite 800 Bethesda, MD 20814 tel 301 347 9141 fax 301 347 0101 FHWA 202-366-6971 e-mail llong(a)camsys.com www.camsys.com

14 years, 7 months

[CTPP] Mapping America using ACS2005-2009 from NY Times

by Liang Long

I was reading the NY Times on my way to work today and found out there are a serious of articles about ACS2005-2009. The most amazing thing is that they developed this interactive map at the Census Tract level for the whole nation. The maps show household income, home value, education and race and ethnicity at each tract and also the percentage change from the Census 2000. Here is the link. You got to check this out! http://projects.nytimes.com/census/2010/explorer?ref=us Liang Long Cambridge Systematics, Inc. 4800 Hampden Lane Suite 800 Bethesda, MD 20814 tel 301 347 9141 fax 301 347 0101 FHWA 202-366-6971 e-mail llong(a)camsys.com www.camsys.com

14 years, 7 months

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CTPP December 2010