README.TXT
Summary File 1 Profiles - SPSS Version

PROGRAM DESCRIPTION:
These programs were developed by a collaboration of State Data Centers
nationwide to produce a set of standard State Data Center program profiles from
Census 2000 Summary File 1.  The files are made available to all members of the
SDC/BIDC Network via the SDC/BIDC Web Clearinghouse (www.sdcbidc.iupui.edu).  

UPDATES AND NOTIFICATIONS:
The SDC/BIDC (SDC-L) List Serve will be the primary means of
communicating revisions to these programs.  All lead and coordinating members of the network
are automatically part of that list serve and affiliate organizations can request access
by contacting their lead agency.

The SDC/BIDC Web Clearinghouse will be the download site for the
programs.  Any and all revisions will be noted in the "revision notes" file available on the
Profile page devoted to these programs.  www.sdcbidc.iupui.edu - click on "Profiles" on the
navigation bar.

CREDITS:
Lenny Gaines was the SPSS Team Leader.  He can
be contacted with questions at <LGAINES@EMPIRE.STATE.NY.US>.
The other team coders were:
Betty Brown (Florida)
Jon Stiles (California)
Ruth Ann Tobias (Illinois)

Many thanks to go to these people for providing this product to their
colleagues in the SDC/BIDC Network!  And of note, Betty Brown created
the conversion kit to produce SPSS data sets and was team's SPSS expert.

The content design team, which brought us the modularized approach
that will allow us to select specific parts of the profile appropriate for a given need,
included:  Ilona Einowski and Rich Lovelady (who will be dearly missed) of
California; Jane Trayham, Maryland; and Carol Rogers, Indiana and Bob Scardmalia, New York, both
serving as co-chairs for the SDC 2k Products subcommittee of the SDC/BIDC Steering
Committee.

SPECIFICS:
The programs to produce the State Data Center program standard
profiles are written in several pieces.  
These profiles are designed to be run in a three-step process:

STEP 1 - Create a permanent SPSS data set containing all records and
all variables for a state.

STEP 2 - Extract the records needed for an individual run into a
working SPSS data set.

STEP 3 - Produce the profiles

We are providing SPSS Syntax files for steps 1 and 3.  Step 2 can be
accomplished by getting the data set 
created in step 1 and running an SPSS data-select-if statement either
from the pull-down menu or a syntax program.

SYSTEM REQUIREMENTS:
These programs have been successfully run on PCs with the Windows NT,
Windows 98, and Windows 2000 operating 
systems.  They seem to freeze up with Windows 95. 

All machines used to test these programs had at least 256 MB of RAM
and ran at clock speeds of at least 250 MHz.  
We don't know whether or not these programs will run on slower
machines with less RAM.


NOTES ON RUNNING STEP 1:
1) All 39 data files and the geographic header file provided by the
Census Bureau must be unzipped before starting 
this step.  This can be done with WINZIP or a similar program.

2) All programs and data MUST be in the same directory on your
computer.

3) The SF1MAIN.SPS file is the only file that needs to be modified. 
These modifications are limited to identifying 
the directory containing the data and programs, and the two-character
state abbreviation for the state being run.  
More details are provided in this syntax file.

4) The data set created by this program includes missing values for
the PCT tables at geographic levels smaller 
than Census Tracts.  The size of this data set is about 10% larger
than the total of the original uncompressed ASCII files.

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June 13, 2001