Are there any plans to post the 1990 and 1980 data online so that interested parties can download the same?
Krishnan
On Fri, May 15, 2015, 2:06 PM <Elaine.Murakami@dot.gov>
wrote:
1990 CTPP Part 7 at tract level! I did not remember
that. I had Brian Gardner look for the CDs in my cubicle
at USDOT Navy Yard. JJ Zang will pick them up in the later part of
next week (after the TRB Planning applications conference) and make a copy
for Chuck. There are 4 CDs and until we look at them, we will not
know if all the states are included.
Elaine
p.s. Bob Paddock of Met Council found the 1980 UTPP file layouts
and will be sending them to me! So, now we can write SAS code to read in
the flat ASCII files.
-----Original Message-----
From: ctpp-news-bounces@chrispy.net
[mailto:ctpp-news-bounces@chrispy.net]
On Behalf Of Ed Christopher
Sent: Friday, May 15, 2015 10:30 AM
To: ctpp-news@chrispy.net
Subject: Re: [CTPP] 1990 and 2000 CTPP contents
Chuck- I wonder if the 1990 CTPP part 7 will help. It had tracts
at the workplace but I am not sure if it covered the the whole state. And
then finding it is another issue. Here is what i found to atleast shed
some light on part 7, see page 188.
http://onlinepubs.trb.org/onlinepubs/conf/1995/cp4/cp4.pdf.
I could not find any of my 1990 transview versions of the data. I know
I have a complete set minus one state somewhere. If you can find
one of the CDs even though you can not extract the data without the extraction
software look on it to see if there are any PDF files with documentation
stashed on it. I seem to recall that there is.
Sorry I could not be any more help right now.
On 5/15/2015 11:00 AM, Charles Purvis wrote:
> Hi all!
>
> Ed or Elaine will probably be able to answer my question, but all
might (or might not) be interested.
>
> I’m interested in developing a historical database showing tract-level
data on total population, land area, and workers-at-workplace, for 1990,
2000 and 2006/10. I want this at a statewide (California) level, not just
for the metropolitan areas. This is part of an ongoing research project
on describing changes in rural/suburban/urban patterns in California (perhaps
elsewhere, as well).
>
> The 2006/10 CTPP includes a tract-level summary level, so I have been
able to obtain a statewide, census tract level file of workers-at-work
from Part 2 tables.
>
> Similarly, about 11 years ago I extracted a block group-level file
of population (Census SF3) and workers-at-work (CTPP 2000, Part 2), which
is easily aggregated to census tract level.
>
> The 1990 CTPP is the first “nationwide” CTPP product. The “statewide”
element includes place-to-place, county-to-county for ALL counties in the
USA, including rural (non-metropolitan) counties. On the other hand, the
“urban” elements of the CTPP is restricted to metropolitan counties,
and the finest level geographies are either TAZ, block group or census
tract. Whether or not the TAZes aggregate to census tracts is unknown.
>
> So, am I correct to assume that the Part 2 (workplace tables) from
the 1990 CTPP do NOT include tract-of-work data for non-metropolitan counties?
That’s my central question.
>
> A secondary question is: is there a scanned/PDF version of the 1990
> CTPP documentation? (I searched my old website, and I don’t think
I
> have it in electronic format….)
>
> I know that the 1980 UTPP was only completed for metropolitan areas,
on a cost-reimbursable basis. Some MPOs in California didn’t participate
in the 1980 program.
>
> That’s all for now!
>
> Chuck Purvis
> retired-MTC
>
>
>
>
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news@chrispy.net
> https://www.chrispy.net/mailman/listinfo/ctpp-news
--
Ed Christopher
_______________________________________________
ctpp-news mailing list
ctpp-news@chrispy.net
https://www.chrispy.net/mailman/listinfo/ctpp-news
_______________________________________________
ctpp-news mailing list
ctpp-news@chrispy.net
https://www.chrispy.net/mailman/listinfo/ctpp-news