Hi, all
We have developed this county flow file from CTPP 2006-2010. The file
includes flows by means of transportation from CTPP 2000, CTPP 2006-2008
and CTPP 2006-2010. Margin of Error is also included for CTPP 2006-2010
and CTPP 2006-2008. The readme file is also provided.
You can download the data in CSV format from the following link:
ftp://ftp.camsys.com/clientsupport/CTPPdata/County%20Flows/MOT/
Username: 8305CTPP
Password: 1900NJA
Please note the username and password are case sensitive.
Enjoy!
Liang Long
Cambridge Systematics, Inc.
4800 Hampden Lane
Suite 800
Bethesda, MD 20814
tel 301 347 0100
fax 301 347 0101
FHWA 202-366-6971
e-mail llong(a)camsys.comwww.camsys.com
Hi, Sulabh
CTPP 2006-2010 is period estimates. For average autos,. the estimates means average autos owned over a five-year period. Due to economic recession starting with the year of 2007, it’s hard to say if the 2006-2010 average autos are much closer to the year of 2008 or to the year of 2010. There is no certain answer here.
There are several tables in the CTPP 2006-2010 which include vehicles information. If users are interested in the aggregate number of vehicles in households, they can use Table B111103 - Aggregate Number of Vehicles Available in Households. The potential issue is that Table B111103 uses the privacy protected ACS microdataset, whose weights are adjusted for workers and not households. There is another table, Table A111102. which is a univariable distribution of Vehicles Available. As part of CTPP utility project funded by AASHTO, we compared Table B111103 and Table A111102 and no substantial differences have been identified for aggregate number of vehicles between the perturbed and real surveyed data for big geographies. But the data reliabilities for Table B111103 in small geographies, such as TAZs, are not validated yet.
Hope this helps.
Liang
________________________________________
From: ctpp-news-bounces(a)chrispy.net [ctpp-news-bounces(a)chrispy.net] on behalf of Sulabh Aryal [saryal(a)richmondregional.org]
Sent: Monday, February 03, 2014 11:46 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] (no subject)
Hello everyone,
We here in Richmond MPO are developing the Socioeconomic data for our Long Range Transportation plan. One of the important components of the data is the total number of automobiles (CTPP Table B111103) by Traffic Analysis Zones (TAZs). We have in the past used both the CTPP data and the Virginia DMV registration data to calculate autos by TAZs.
Here are the problems we are facing this time around. The base year for our socioeconomic data is 2012. CTPP data is a rolling average from 2006-2010. How would one calculate the estimates for the year 2012 taking CTPP 2006-2008 as the base data? Assuming we do a straight line projection, how many years do we need to project the CTPP data to get the estimates for the year 2012? In other words, do we consider the CTPP data from year 2008 ( which is the mid-year) and project the data by 4 years to get the 2012 estimates or do we take the year 2010 ( which is the end year) and project the data by 2 years to get the 2012 estimates.
Any insight would be appreciated.
Thanks,
Sulabh Aryal
Associate Planner
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org<mailto:saryal(a)richmondregional.org> 3 www.richmondregional.org<http://www.richmondregional.org>
Hi Sulabh,
If your scope of the work permits, you may also want to consider the
transportation accessibility/network when estimating auto-ownership. This
could be a major factor for areas with good transit access or other
transportation alternative.
Birat
Birat Pandey, PE
Senior Transportation Engineer/Modeler
Baltimore Metropolitan Council
Offices @ McHenry Row
1500 Whetstone Way, Suite 300
Baltimore, MD 21230
Ph: 410-732-0500 x1050
bpandey(a)baltometro.orgwww.baltometro.org
*From:* ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net]
*On Behalf Of *Steiss, Todd A.
*Sent:* Monday, February 03, 2014 12:31 PM
*To:* ctpp-news(a)chrispy.net
*Subject:* Re: [CTPP] (no subject)
I would look at the auto per household ratio or auto per person ratio from
the CTPP 2006-2008 base data and use that to estimate future autos by TAZ.
I think you will be better off using ratios tied to population or
households so that the growth in autos at the TAZ level will keep pace with
the growth in households and/or population. You wouldn't want a TAZ to
have only 10% growth in autos if the household data shows a growth of 50%
for that same TAZ.
*Todd A. Steiss, AICP, GISPSenior Planner*
*Parsons Brinckerhoff*
*121 West Trade Street, Suite 1950*
*Charlotte, NC 28202*
*Direct: 704-342-5411Main: 704-342-5401*
*Mobile: 704-906-7706Fax: 704-342-8472*
*Email: steiss(a)pbworld.com <steiss(a)pbworld.com>*
*From:* ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net<ctpp-news-bounces(a)chrispy.net>]
*On Behalf Of *Sulabh Aryal
*Sent:* Monday, February 03, 2014 11:46 AM
*To:* ctpp-news(a)chrispy.net
*Subject:* [CTPP] (no subject)
Hello everyone,
We here in Richmond MPO are developing the Socioeconomic data for our Long
Range Transportation plan. One of the important components of the data is
the total number of automobiles (CTPP Table B111103) by Traffic Analysis
Zones (TAZs). We have in the past used both the CTPP data and the Virginia
DMV registration data to calculate autos by TAZs.
Here are the problems we are facing this time around. The base year for our
socioeconomic data is 2012. CTPP data is a rolling average from 2006-2010.
How would one calculate the estimates for the year 2012 taking CTPP
2006-2008 as the base data? Assuming we do a straight line projection, how
many years do we need to project the CTPP data to get the estimates for the
year 2012? In other words, do we consider the CTPP data from year 2008 (
which is the mid-year) and project the data by 4 years to get the 2012
estimates or do we take the year 2010 ( which is the end year) and project
the data by 2 years to get the 2012 estimates.
Any insight would be appreciated.
Thanks,
*Sulabh Aryal*
*Associate Planner*
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org 3 www.richmondregional.org
______________________________________________________________________
NOTICE: This communication and any attachments ("this message") may contain
confidential information for the sole use of the intended recipient(s). Any
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or distribution of, or reliance on this message is strictly prohibited. If
you have received this message in error, or you are not an authorized
recipient, please notify the sender immediately by replying to this
message, delete this message and all copies from your e-mail system and
destroy any printed copies.
I would look at the auto per household ratio or auto per person ratio from the CTPP 2006-2008 base data and use that to estimate future autos by TAZ.
I think you will be better off using ratios tied to population or households so that the growth in autos at the TAZ level will keep pace with the growth in households and/or population. You wouldn’t want a TAZ to have only 10% growth in autos if the household data shows a growth of 50% for that same TAZ.
Todd A. Steiss, AICP, GISP
Senior Planner
Parsons Brinckerhoff
121 West Trade Street, Suite 1950
Charlotte, NC 28202
Direct: 704-342-5411
Main: 704-342-5401
Mobile: 704-906-7706
Fax: 704-342-8472
Email: steiss(a)pbworld.com<mailto:steiss(a)pbworld.com>
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Sulabh Aryal
Sent: Monday, February 03, 2014 11:46 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] (no subject)
Hello everyone,
We here in Richmond MPO are developing the Socioeconomic data for our Long Range Transportation plan. One of the important components of the data is the total number of automobiles (CTPP Table B111103) by Traffic Analysis Zones (TAZs). We have in the past used both the CTPP data and the Virginia DMV registration data to calculate autos by TAZs.
Here are the problems we are facing this time around. The base year for our socioeconomic data is 2012. CTPP data is a rolling average from 2006-2010. How would one calculate the estimates for the year 2012 taking CTPP 2006-2008 as the base data? Assuming we do a straight line projection, how many years do we need to project the CTPP data to get the estimates for the year 2012? In other words, do we consider the CTPP data from year 2008 ( which is the mid-year) and project the data by 4 years to get the 2012 estimates or do we take the year 2010 ( which is the end year) and project the data by 2 years to get the 2012 estimates.
Any insight would be appreciated.
Thanks,
Sulabh Aryal
Associate Planner
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org<mailto:saryal(a)richmondregional.org> 3 www.richmondregional.org<http://www.richmondregional.org>
______________________________________________________________________
NOTICE: This communication and any attachments ("this message") may contain confidential information for the sole use of the intended recipient(s). Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on this message is strictly prohibited. If you have received this message in error, or you are not an authorized recipient, please notify the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies.
Sulabh,
If you have the VA registration data geocoded to block so that you can
aggregate to TAZ, and the dataset is not too messed up with post office
boxes, etc., and you can screen out the business registrations, I'd go just
with that dataset and not even use the CTPP.
The MOEs (margins of error) at the TAZ level are enormous, to say nothing
of the timing problem that you discuss. Why bother?
Patty Becker
On Mon, Feb 3, 2014 at 11:46 AM, Sulabh Aryal
<saryal(a)richmondregional.org>wrote:
> Hello everyone,
>
>
>
> We here in Richmond MPO are developing the Socioeconomic data for our Long
> Range Transportation plan. One of the important components of the data is
> the total number of automobiles (CTPP Table B111103) by Traffic Analysis
> Zones (TAZs). We have in the past used both the CTPP data and the Virginia
> DMV registration data to calculate autos by TAZs.
>
>
>
> Here are the problems we are facing this time around. The base year for
> our socioeconomic data is 2012. CTPP data is a rolling average from
> 2006-2010. How would one calculate the estimates for the year 2012 taking
> CTPP 2006-2008 as the base data? Assuming we do a straight line projection,
> how many years do we need to project the CTPP data to get the estimates for
> the year 2012? In other words, do we consider the CTPP data from year 2008
> ( which is the mid-year) and project the data by 4 years to get the 2012
> estimates or do we take the year 2010 ( which is the end year) and project
> the data by 2 years to get the 2012 estimates.
>
>
>
> Any insight would be appreciated.
>
>
>
>
>
> Thanks,
>
> *Sulabh Aryal*
>
> *Associate Planner*
>
>
>
> Richmond Regional Planning District Commission
>
> 9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
>
> Phone: 804.323.2033 3 Fax: 804.323.2025
>
> saryal(a)richmondregional.org 3 www.richmondregional.org
>
>
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> https://www.chrispy.net/mailman/listinfo/ctpp-news
>
>
--
Patricia C. (Patty) Becker
APB Associates/Southeast Michigan Census Council (SEMCC)
28300 Franklin Rd, Southfield, MI 48034
office: 248-354-6520
home:248-355-2428
pbecker(a)umich.edu
Hello everyone,
We here in Richmond MPO are developing the Socioeconomic data for our Long Range Transportation plan. One of the important components of the data is the total number of automobiles (CTPP Table B111103) by Traffic Analysis Zones (TAZs). We have in the past used both the CTPP data and the Virginia DMV registration data to calculate autos by TAZs.
Here are the problems we are facing this time around. The base year for our socioeconomic data is 2012. CTPP data is a rolling average from 2006-2010. How would one calculate the estimates for the year 2012 taking CTPP 2006-2008 as the base data? Assuming we do a straight line projection, how many years do we need to project the CTPP data to get the estimates for the year 2012? In other words, do we consider the CTPP data from year 2008 ( which is the mid-year) and project the data by 4 years to get the 2012 estimates or do we take the year 2010 ( which is the end year) and project the data by 2 years to get the 2012 estimates.
Any insight would be appreciated.
Thanks,
Sulabh Aryal
Associate Planner
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org<mailto:saryal(a)richmondregional.org> 3 www.richmondregional.org<http://www.richmondregional.org>
I don’t know the schedule, but the contact person is Penelope Weinberger (pweinberger(a)aashto.org).
Darlanne Hoctor Mulmat
Applied Research Division - Criminal Justice/Public Policy
San Diego Association of Governments
619-699-7326
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Jason Gillow
Sent: Thursday, January 30, 2014 7:46 AM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] CTPP Training at SACOG (Sacramento, CA) on February 13, 2014 - Census Transportation Planning Package
Hello
Would anyone know if there would be this kind of training in Ohio in 2014 or in the future?
Thanks
Jason
Jason Gillow
Research/Planning Coordinator
Ohio Valley Regional Development Commission
73 Progress Drive
Waverly, OH 45690-1196
Phone: 740-947-2853 Fax: 740-947-3468
www.ovrdc.org<http://www.ovrdc.org>
Email: jgillow(a)ovrdc.org<mailto:jgillow(a)ovrdc.org>
From: ctpp-news-bounces(a)chrispy.net<mailto:ctpp-news-bounces(a)chrispy.net> [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Tina Glover
Sent: Tuesday, January 21, 2014 7:11 PM
To: ctpp-news(a)chrispy.net<mailto:ctpp-news(a)chrispy.net>
Subject: Re: [CTPP] CTPP Training at SACOG (Sacramento, CA) on February 13, 2014 - Census Transportation Planning Package
CORRECTION, The training will be on Thursday February 13, 2014 (not Monday) Thanks!
Tina Glover
>>> "Tina Glover" <TGlover(a)sacog.org<mailto:TGlover(a)sacog.org>> 1/21/2014 3:44 PM >>>
Hi Penelope,
In keeping with the flurry of other CTPP announced workshops, could you send my announcement out below?
Thanks!
Tina
________________________________________________________________________________________
A free training session is offered by AASHTO and FHWA on the Census
Transportation Planning Package (CTPP), and sponsored by the
Sacramento Area Council of Governments (SACOG)
There are just a few slots left!
What: Free CTPP training
When: Monday, February 13, 2014 8:30 am - 4:30 pm
Where: SACOG Board Room, 1415 L Street, Suite 300, Sacramento CA 95814
RSVP email, with 'CTPP workshop' in the Subject line, to Tina Glover: TGlover(a)sacog.org<mailto:TGlover(a)sacog.org>
The CTPP is a set of special tabulations designed by transportation
planners using data from the Census Bureau. The most current release of
CTPP data comes from the 2006-2010 American Community Survey (ACS)
sample, and includes data from small geographic units such as census
tracts and transportation analysis zones (TAZs).
The CTPP is a unique census product providing data relating to the
journey to work, including travel mode, number of household vehicles,
demographic variables, employment status, income and poverty
information, life cycle, and many other characteristics. Data tables
for home and work locations, and worker flow (home-to-work) are
available. A rough agenda for the full-day training session is below:
● Introductions and welcome
● Introduction to the CTPP
● ACS questionnaire: paper exercise
● Data issues
● Break
● Data issues continued
● Find the CTPP table: paper exercise
● Lunch
● Software tour
● Profile exercise: software exercise
● Results of profile exercise
● Wrap up
Please register by sending the participant's name and contact
information in an e-mail to: Tina Glover: TGlover(a)sacog.org<mailto:TGlover(a)sacog.org>. Space is limited. Please RSVP ASAP!
The afternoon session will include training on the new CTPP
software.
Only a few computers will be provided, so bring a
laptop to participate hands-on in this exercise.
Sharing personal computers is also an option. Please ensure that your
laptop is fully charged,
_______________________________________________
ctpp-news mailing list
ctpp-news(a)chrispy.net<mailto:ctpp-news(a)chrispy.net>
https://www.chrispy.net/mailman/listinfo/ctpp-news
Hi Penelope,
In keeping with the flurry of other CTPP announced workshops, could you
send my announcement out below?
Thanks!
Tina
________________________________________________________________________________________
A free training session is offered by AASHTO and FHWA on the Census
Transportation Planning Package (CTPP), and sponsored by the
Sacramento Area Council of Governments (SACOG)
There are just a few slots left!
What: Free CTPP training
When: Monday, February 13, 2014 8:30 am - 4:30 pm
Where: SACOG Board Room, 1415 L Street, Suite 300, Sacramento CA
95814
RSVP email, with 'CTPP workshop' in the Subject line, to Tina Glover:
TGlover(a)sacog.org
The CTPP is a set of special tabulations designed by transportation
planners using data from the Census Bureau. The most current release
of
CTPP data comes from the 2006-2010 American Community Survey (ACS)
sample, and includes data from small geographic units such as census
tracts and transportation analysis zones (TAZs).
The CTPP is a unique census product providing data relating to the
journey to work, including travel mode, number of household vehicles,
demographic variables, employment status, income and poverty
information, life cycle, and many other characteristics. Data tables
for home and work locations, and worker flow (home-to-work) are
available. A rough agenda for the full-day training session is below:
* Introductions and welcome
* Introduction to the CTPP
* ACS questionnaire: paper exercise
* Data issues
* Break
* Data issues continued
* Find the CTPP table: paper exercise
* Lunch
* Software tour
* Profile exercise: software exercise
* Results of profile exercise
* Wrap up
Please register by sending the participant's name and contact
information in an e-mail to: Tina Glover: TGlover(a)sacog.org. Space is
limited. Please RSVP ASAP!
The afternoon session will include training on the new CTPP
software.
Only a few computers will be provided, so bring a
laptop to participate hands-on in this exercise.
Sharing personal computers is also an option. Please ensure that your
laptop is fully charged,
_______________________________________________
ctpp-news mailing list
ctpp-news(a)chrispy.nethttps://www.chrispy.net/mailman/listinfo/ctpp-news
The values match one those "(rXXXXX)" parts are removed. I called Census this morning and they informed me that those are footnotes for values that have been revised due to a CQR. I thought that all CQR data was kept separate and I'm not quite sure why it has to be in the same field as the count value and not a separate field. So the important thing to know is that the text file that's included with the downloaded data shows those footnotes and their corrected counts. All those footnotes must be removed from the cell before that data can be used.
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
(309) 793-6302 ext. 151
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang.Long.CTR(a)dot.gov
Sent: Wednesday, January 29, 2014 8:37 AM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] UPDATE 2010 Census Block-Level Data is Changed SF1-P1
Hi, Geoff
Thanks for sharing your experience with us.
When you mentioned that two data sources are off by 696 people, is this caused by rvalues included data? Or even after cleaning up rvalue cells, two datasets are still off by 696?
Thanks,
Liang
________________________________________
From: ctpp-news-bounces(a)chrispy.net [ctpp-news-bounces(a)chrispy.net] on behalf of Geoff Olson [golson(a)bistateonline.org]
Sent: Tuesday, January 28, 2014 5:25 PM
To: 'ctpp-news(a)chrispy.net'
Subject: Re: [CTPP] UPDATE 2010 Census Block-Level Data is Changed SF1-P1
I compared our data downloaded in 2011 to the recent data and there are fields in the data from FactFinder2 that have non-numeric characters in the data values. So for the 3 county are that our MPO is in, the count difference was off by 696 people (SF-1 P1). Here is what the data looks like, so please be aware that other data may have the same issue.
This is just a small sample, sorted to have the "#VALUE!" cells at the top. The "2011" Blocks are the data we downloaded in 2011 and the "2014" Blocks are the data I downloaded just now. The values are there, but those r values are also included in the data.
"2011" Block POP_TOT "2014" Blocks D001 ID Match 2011_2014_diff
171610241012049 167 171610241012049 167(r49517) Yay #VALUE!
171610241012050 78 171610241012050 78(r49518) Yay #VALUE!
171610241012051 86 171610241012051 86(r39321) Yay #VALUE!
171610241012056 135 171610241012056 135(r49515) Yay #VALUE!
171610241012057 3 171610241012057 3(r39322) Yay #VALUE!
171610241012079 51 171610241012079 51(r39318) Yay #VALUE!
171610241023013 17 171610241023013 17(r49516) Yay #VALUE!
191630130001018 90 191630130001018 90(r39585) Yay #VALUE!
191630130001020 48 191630130001020 48(r39586) Yay #VALUE!
191630130001024 19 191630130001024 19(r39587) Yay #VALUE!
191630135001037 2 191630135001037 2(r39591) Yay #VALUE!
170730301001000 0 170730301001000 0 Yay 0
170730301001001 0 170730301001001 0 Yay 0
170730301001002 0 170730301001002 0 Yay 0
170730301001003 0 170730301001003 0 Yay 0
170730301001004 0 170730301001004 0 Yay 0
170730301001005 0 170730301001005 0 Yay 0
170730301001006 0 170730301001006 0 Yay 0
170730301001007 0 170730301001007 0 Yay 0
170730301001008 0 170730301001008 0 Yay 0
170730301001009 0 170730301001009 0 Yay 0
170730301001010 219 170730301001010 219 Yay 0
170730301001011 43 170730301001011 43 Yay 0
170730301001012 64 170730301001012 64 Yay 0
170730301001013 70 170730301001013 70 Yay 0
170730301001014 0 170730301001014 0 Yay 0
170730301001015 0 170730301001015 0 Yay 0
I hope this helps someone else.
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
(309) 793-6302 ext. 151
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Geoff Olson
Sent: Tuesday, January 28, 2014 9:52 AM
To: 'ctpp-news(a)chrispy.net'
Subject: [CTPP] 2010 Census Block-Level Data is Changed SF1-P1
Our MPO has been working on getting Census block data aggregated to TAZ levels and we noticed that Census data that was downloaded when 2010 Census data was released does not match 2010 Census Data that was downloaded today. We've done various checks between the two tables (SF1-P1), and the sums are different. Our MPA population count with the older data is 297,986 and the sum the new data is showing us is 297,290. We did check this with ESRI's Community Analyst and it agrees with the older data that our MPA should have a Census 2010 population of 297,986. Is there a reason when Census data might change? If the P1 data has changed, then I'm wondering if other Census data might be different too.
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
(309) 793-6302 ext. 151
This email and all attachments are intended only for the listed recipient(s). This message may contain confidential or privileged information only for use by the listed recipient(s). Do not forward, post or otherwise disclose the contents of this email without the permission of the sender. If you received this message in error, please delete it and notify the sender immediately. Bi-State Regional Commission accepts no responsibility for any damages caused by this message, including those related to viruses or malware.
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This email and all attachments are intended only for the listed recipient(s). This message may contain confidential or privileged information only for use by the listed recipient(s). Do not forward, post or otherwise disclose the contents of this email without the permission of the sender. If you received this message in error, please delete it and notify the sender immediately. Bi-State Regional Commission accepts no responsibility for any damages caused by this message, including those related to viruses or malware.
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This email and all attachments are intended only for the listed recipient(s). This message may contain confidential or privileged information only for use by the listed recipient(s). Do not forward, post or otherwise disclose the contents of this email without the permission of the sender. If you received this message in error, please delete it and notify the sender immediately. Bi-State Regional Commission accepts no responsibility for any damages caused by this message, including those related to viruses or malware.
Thank you, Liang. I do still have the files we sent to Census via the FTP upload and those boundaries all match. It's the TAZ files that are currently available for download that don't match blocks and are different than what we uploaded.
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
(309) 793-6302 ext. 151
-----Original Message-----
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Liang.Long.CTR(a)dot.gov
Sent: Tuesday, January 21, 2014 12:10 PM
To: ctpp-news(a)chrispy.net
Subject: Re: [CTPP] 2010 Census TAZs & Block Topology Errors
Hi, Geoff
In theory, the Census TAZs are built from blocks. We are talking with the Census Bureau staff on this issue and will get back to you asap.
Thanks for your patience.
Liang
________________________________________
From: ctpp-news-bounces(a)chrispy.net [ctpp-news-bounces(a)chrispy.net] on behalf of Geoff Olson [golson(a)bistateonline.org]
Sent: Tuesday, January 21, 2014 9:50 AM
To: 'ctpp-news(a)chrispy.net'
Subject: [CTPP] 2010 Census TAZs & Block Topology Errors
Has anyone else come across instances where there is a topology error between the 2010 Census TAZ boundaries and the 2010 Census Block boundaries? We have a few places around our MPO boundary where these don't match up like they're supposed to. I didn't know if anyone else may have had this issue.
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
(309) 793-6302 ext. 151
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ctpp-news mailing list
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This email and all attachments are intended only for the listed recipient(s). This message may contain confidential or privileged information only for use by the listed recipient(s). Do not forward, post or otherwise disclose the contents of this email without the permission of the sender. If you received this message in error, please delete it and notify the sender immediately. Bi-State Regional Commission accepts no responsibility for any damages caused by this message, including those related to viruses or malware.