Identify where your block groups & TAZs nest (and where they don't)

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bgruswitz
Identify where your block groups & TAZs nest (and where they don't)

All, 

As we've been wrapping our minds around how to redelineate our block groups for better alignment with our TAZs, our colleague Joe Flood greatly aided this effort by creating a tool to identify nesting relationships from an input table of 2010 census blocks with the block groups and TAZs they belong to. He wrote it in Python [https://github.com/dvrpc/BlockGroupTAZ], but was kind enough to make an Executable (.exe) file [https://drive.google.com/drive/u/1/folders/1sMZxn-9352uUV1Bc3Ys7_PzJ9e-OLn5L] for non-coders to download, run, upload an input table, and get the resulting outputs classifying TAZs and block groups by the following nesting relationships.
  • One TAZ = One Block Group
  • One TAZ = Many Block Groups
  • Many TAZs = One Block Group
  • Many TAZs = Many Block Groups
  • No Population
With it, we've been able to map out where our geographies least align--the "Many TAZs = Many Block Groups" areas--and concentrate our efforts there before examining other areas. Additionally, our "No Population" TAZs are serving as good candidates for special block groups where we may have little to no population but an employment center we'd like reflected in the CTPP workplace tables and destinations for commute flows. See how this plays out in the block group and TAZ maps for our 9-county region in the GitHub and Google Drive links below. 
 
Sample input files are provided on GitHub and Google Drive. Replace our block data with your own--keeping the same column headers--and run the tool in your region. Further info on GitHub site ReadMe file and Google Drive Instructions for Using Executable (GetTAZBGNestings.exe).
 
Hope this helps you in your PSAPing! Big thanks to Joe Flood and his awesomeness!
Ben
Vince Bernardin

I second that thanks! Three cheers for Joe! – Vince

……………………………………………………………..
VINCENT L BERNARDIN, PhD
Director

RSG
2709 Washington Ave., Suite 9 | Evansville, IN 47714
o 812.200.2351 | m 812.459.3500
www.rsginc.com

From: bgruswitz=dvrpc.org@mg.tmip.org On Behalf Of bgruswitz
Sent: Thursday, January 31, 2019 10:10 AM
To: TMIP
Subject: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

All,
As we've been wrapping our minds around how to redelineate our block groups for better alignment with our TAZs, our colleague Joe Flood greatly aided this effort by creating a tool to identify nesting relationships from an input table of 2010 census blocks with the block groups and TAZs they belong to. He wrote it in Python [https://github.com/dvrpc/BlockGroupTAZ], but was kind enough to make an Executable (.exe) file [https://drive.google.com/drive/u/1/folders/1sMZxn-9352uUV1Bc3Ys7_PzJ9e-O... for non-coders to download, run, upload an input table, and get the resulting outputs classifying TAZs and block groups by the following nesting relationships.

* One TAZ = One Block Group
* One TAZ = Many Block Groups
* Many TAZs = One Block Group
* Many TAZs = Many Block Groups
* No Population
With it, we've been able to map out where our geographies least align--the "Many TAZs = Many Block Groups" areas--and concentrate our efforts there before examining other areas. Additionally, our "No Population" TAZs are serving as good candidates for special block groups where we may have little to no population but an employment center we'd like reflected in the CTPP workplace tables and destinations for commute flows. See how this plays out in the block group and TAZ maps for our 9-county region in the GitHub and Google Drive links below.

Sample input files are provided on GitHub and Google Drive. Replace our block data with your own--keeping the same column headers--and run the tool in your region. Further info on GitHub site ReadMe file and Google Drive Instructions for Using Executable (GetTAZBGNestings.exe).

Hope this helps you in your PSAPing! Big thanks to Joe Flood and his awesomeness!
Ben
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.Scott

oops,
I tried each of the links below and got 404 errors.

Have I jumped the gun?

Scott Thomson
Kentucky Transportation Cabinet

From: vince.bernardin=rsginc.com@mg.tmip.org [mailto:vince.bernardin=rsginc.com@mg.tmip.org] On Behalf Of Vince Bernardin
Sent: Friday, February 01, 2019 8:16 AM
To: TMIP
Subject: Re: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

I second that thanks! Three cheers for Joe! – Vince

……………………………………………………………..
VINCENT L BERNARDIN, PhD
Director

RSG
2709 Washington Ave., Suite 9 | Evansville, IN 47714
o 812.200.2351 | m 812.459.3500
www.rsginc.com

From: bgruswitz=dvrpc.org@mg.tmip.org On Behalf Of bgruswitz
Sent: Thursday, January 31, 2019 10:10 AM
To: TMIP
Subject: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

All,
As we've been wrapping our minds around how to redelineate our block groups for better alignment with our TAZs, our colleague Joe Flood greatly aided this effort by creating a tool to identify nesting relationships from an input table of 2010 census blocks with the block groups and TAZs they belong to. He wrote it in Python [https://github.com/dvrpc/BlockGroupTAZ], but was kind enough to make an Executable (.exe) file [https://drive.google.com/drive/u/1/folders/1sMZxn-9352uUV1Bc3Ys7_PzJ9e-O... for non-coders to download, run, upload an input table, and get the resulting outputs classifying TAZs and block groups by the following nesting relationships.

* One TAZ = One Block Group
* One TAZ = Many Block Groups
* Many TAZs = One Block Group
* Many TAZs = Many Block Groups
* No Population
With it, we've been able to map out where our geographies least align--the "Many TAZs = Many Block Groups" areas--and concentrate our efforts there before examining other areas. Additionally, our "No Population" TAZs are serving as good candidates for special block groups where we may have little to no population but an employment center we'd like reflected in the CTPP workplace tables and destinations for commute flows. See how this plays out in the block group and TAZ maps for our 9-county region in the GitHub and Google Drive links below.

Sample input files are provided on GitHub and Google Drive. Replace our block data with your own--keeping the same column headers--and run the tool in your region. Further info on GitHub site ReadMe file and Google Drive Instructions for Using Executable (GetTAZBGNestings.exe).

Hope this helps you in your PSAPing! Big thanks to Joe Flood and his awesomeness!
Ben
--
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gypygoxer

Removing the square bracket worked. Here is the link.

https://github.com/dvrpc/BlockGroupTAZ

Weihao Yin, Ph.D, EIT
Senior Consultant
U.S-Transportation
3101 Wilson Boulevard
Suite 600
Arlington, VA 22201
weihao.yin@aecom.com
703-340-3071

From: scott.thomson=ky.gov@mg.tmip.org On Behalf Of .Scott
Sent: Friday, February 01, 2019 10:22 AM
To: TMIP
Subject: Re: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

oops,
I tried each of the links below and got 404 errors.

Have I jumped the gun?

Scott Thomson
Kentucky Transportation Cabinet

From: vince.bernardin=rsginc.com@mg.tmip.org [mailto:vince.bernardin=rsginc.com@mg.tmip.org] On Behalf Of Vince Bernardin
Sent: Friday, February 01, 2019 8:16 AM
To: TMIP
Subject: Re: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

I second that thanks! Three cheers for Joe! – Vince

……………………………………………………………..
VINCENT L BERNARDIN, PhD
Director

RSG
2709 Washington Ave., Suite 9 | Evansville, IN 47714
o 812.200.2351 | m 812.459.3500
www.rsginc.com

From: bgruswitz=dvrpc.org@mg.tmip.org On Behalf Of bgruswitz
Sent: Thursday, January 31, 2019 10:10 AM
To: TMIP
Subject: [TMIP] Identify where your block groups & TAZs nest (and where they don't)

All,
As we've been wrapping our minds around how to redelineate our block groups for better alignment with our TAZs, our colleague Joe Flood greatly aided this effort by creating a tool to identify nesting relationships from an input table of 2010 census blocks with the block groups and TAZs they belong to. He wrote it in Python [https://github.com/dvrpc/BlockGroupTAZ], but was kind enough to make an Executable (.exe) file [https://drive.google.com/drive/u/1/folders/1sMZxn-9352uUV1Bc3Ys7_PzJ9e-O... for non-coders to download, run, upload an input table, and get the resulting outputs classifying TAZs and block groups by the following nesting relationships.

* One TAZ = One Block Group
* One TAZ = Many Block Groups
* Many TAZs = One Block Group
* Many TAZs = Many Block Groups
* No Population
With it, we've been able to map out where our geographies least align--the "Many TAZs = Many Block Groups" areas--and concentrate our efforts there before examining other areas. Additionally, our "No Population" TAZs are serving as good candidates for special block groups where we may have little to no population but an employment center we'd like reflected in the CTPP workplace tables and destinations for commute flows. See how this plays out in the block group and TAZ maps for our 9-county region in the GitHub and Google Drive links below.

Sample input files are provided on GitHub and Google Drive. Replace our block data with your own--keeping the same column headers--and run the tool in your region. Further info on GitHub site ReadMe file and Google Drive Instructions for Using Executable (GetTAZBGNestings.exe).

Hope this helps you in your PSAPing! Big thanks to Joe Flood and his awesomeness!
Ben
--
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Manage my subscriptions: https://tmip.org/mailinglist
Stop emails for this post: https://tmip.org/mailinglist/unsubscribe/13039
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Full post: https://tmip.org/content/identify-where-your-block-groups-tazs-nest-and-...
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Joseph J Flood

It looks as though the links in some of the replies were edited. I got the
same when I tried clicking those, but when I clicked the links in the
original email they worked.

On Fri, Feb 1, 2019 at 10:21 AM .Scott wrote:

> oops,
> I tried each of the links below and got 404 errors.
>
> Have I jumped the gun?
>
> Scott Thomson
> Kentucky Transportation Cabinet
>
> From: vince.bernardin=rsginc.com@mg.tmip.org [
> mailto:vince.bernardin=rsginc.com@mg.tmip.org]
> On Behalf Of Vince Bernardin
> Sent: Friday, February 01, 2019 8:16 AM
> To: TMIP
> Subject: Re: [TMIP] Identify where your block groups & TAZs nest (and
> where they don't)
>
> I second that thanks! Three cheers for Joe! – Vince
>
> ……………………………………………………………..
> VINCENT L BERNARDIN, PhD
> Director
>
> RSG
> 2709 Washington Ave., Suite 9 | Evansville, IN 47714
> o 812.200.2351 | m 812.459.3500
> www.rsginc.com
>
> From: bgruswitz=dvrpc.org@mg.tmip.org On Behalf Of bgruswitz
> Sent: Thursday, January 31, 2019 10:10 AM
> To: TMIP
> Subject: [TMIP] Identify where your block groups & TAZs nest (and where
> they don't)
>
> All,
> As we've been wrapping our minds around how to redelineate our block
> groups for better alignment with our TAZs, our colleague Joe Flood greatly
> aided this effort by creating a tool to identify nesting relationships from
> an input table of 2010 census blocks with the block groups and TAZs they
> belong to. He wrote it in Python [https://github.com/dvrpc/BlockGroupTAZ],
> but was kind enough to make an Executable (.exe) file [
> https://drive.google.com/drive/u/1/folders/1sMZxn-9352uUV1Bc3Ys7_PzJ9e-O...
> for non-coders to download, run, upload an input table, and get the
> resulting outputs classifying TAZs and block groups by the following
> nesting relationships.
>
> * One TAZ = One Block Group
> * One TAZ = Many Block Groups
> * Many TAZs = One Block Group
> * Many TAZs = Many Block Groups
> * No Population
> With it, we've been able to map out where our geographies least align--the
> "Many TAZs = Many Block Groups" areas--and concentrate our efforts there
> before examining other areas. Additionally, our "No Population" TAZs are
> serving as good candidates for special block groups where we may have
> little to no population but an employment center we'd like reflected in the
> CTPP workplace tables and destinations for commute flows. See how this
> plays out in the block group and TAZ maps for our 9-county region in the
> GitHub and Google Drive links below.
>
> Sample input files are provided on GitHub and Google Drive. Replace our
> block data with your own--keeping the same column headers--and run the tool
> in your region. Further info on GitHub site ReadMe file and Google Drive
> Instructions for Using Executable (GetTAZBGNestings.exe).
>
> Hope this helps you in your PSAPing! Big thanks to Joe Flood and his
> awesomeness!
> Ben
> --
> Full post:
> https://tmip.org/content/identify-where-your-block-groups-tazs-nest-and-
> ...
> Manage my subscriptions: https://tmip.org/mailinglist
> Stop emails for this post: https://tmip.org/mailinglist/unsubscribe/13039
> --
> Full post:
> https://tmip.org/content/identify-where-your-block-groups-tazs-nest-and-...
>
> Manage my subscriptions: https://tmip.org/mailinglist
> Stop emails for this post: https://tmip.org/mailinglist/unsubscribe/13039
> --
> Full post:
> https://tmip.org/content/identify-where-your-block-groups-tazs-nest-and-...
> Manage my subscriptions: https://tmip.org/mailinglist
> Stop emails for this post: https://tmip.org/mailinglist/unsubscribe/13039
>

--
Joseph J. Flood, MS | Transportation Engineer
Pronouns: he/him
Office of Travel Modeling
Delaware Valley Regional Planning Commission
190 N Independence Mall West, 8th Floor
Philadelphia, PA 19106-1520

215.238.2879 <2155921800> | www.dvrpc.org
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