FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2003, RELEASED NOVEMBER, 2002.

ETDM PROJECT SEGMENT SPATIAL VIEW 

Geodataset Name:      S_ANALYSIS_AREAS
Geodataset Type:      SDE data layer
Geodataset Feature:   POLYGON

GENERAL DESCRIPTION:

This dataset contains buffer areas around planned transportation projects that are being reviewed through the Efficient Transportation Decision Making (ETDM) Process. The buffer areas represent distances from the projects where prescribed GIS analyses were conducted.

DATA SOURCE(S):                   Florida Department of Transportation (FDOT)
				  Florida Metropolitan Planning Organizations (MPOs)
                 
SCALE OF ORIGINAL SOURCE MAPS:    Varies

DATE OF AUTOMATION OR SOURCE:     2002 with on-going updates

GEODATASET EXTENT:                State of Florida

FEATURE ATTRIBUTE TABLES
Datafile Name: S_ANALYSIS_AREAS

Alias               Type          Precision   Width     Indexed?
---------------------------------------------------------------------
OBJECTID            LONG              0         9       false     
FK_PROJECT          DOUBLE            5         11      false     
ACRES               DOUBLE            2         12      false     
BUFFER_DISTANCE     DOUBLE            1         9       false     
ANALYSIS_COMPLETE   CHAR              0         1       false     
SHAPE               SHAPEMULTIPOINT   0         0       false

FEATURE ATTRIBUTE TABLES CODES AND VALUES: 

ITEM                            DESCRIPTION

OBJECTID                        Identifier automatically generated by ArcSDE
FK_PROJECT                      Foreign Key from projects table that uniquely
                                identifies the project throughout the ETDM process 
ACRES                           Number of acres in the polygon 
BUFFER_DISTANCE                 Distance of the buffer outline from the project line
                                in feet
ANALYSIS_COMPLETE               Yes ("Y") or No ("N") indicting whether or not the
                                analysis area has been evaluated
                                through the batch GIS analysis job.
SHAPE                           Field automatically generated in ArcSDE to store
                                information about the feature shape

USER NOTES:

Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data.

1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries.

1:100000 scale datasets are recommended for projects that are at the multi-county or regional level.

1:250000 scale datasets are recommended for projects that are at the regional or state level or larger.

Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analyses. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our web pages at:

http://www.geoplan.ufl.edu/education.html

FGDL QUALITY ASSURANCE STATUS:

-Projected data to FGDL Albers
-Set Precision to DOUBLE
-Set Tolerances to FGDL Standards
-Added DESCRIPT item based on LOCALNAME, STROUTE, and USROUTE
-Added CLASS item based on road type

REFERENCES:

 

DATA LINEAGE SUMMARY:

Project segments are incorporated into the ETDM project database from information provided by FDOT districts and MPOs. Three mechanisms are available for updating the ETDM project database:

  1. On-line Project Input – Enables users to identify the location of the needed/planned project on an aerial photograph and enter information about the project into the database by using on-line forms. This application uses USGS Digitial Orthoquarter Quads as the base for digitizing.
  2. On-line State Project Identification – Transfers existing information from the FDOT digital base map to the ETDM database. The application allows users to identify existing segments in the existing roadway network, describe the proposed project, and automatically extract information from the digital base map to the ETDM project database. The FDOT digital base map is developed from 1:24,000-scale map sources
  3. Batch Upload Utility – This application transfers existing digital data electronically from the MPO databases to the ETDM project database. Source scales vary depending on the specific MPO.

The project lines are created by merging segments together based on the FK_PROJECT id. The analysis areas are created by buffering the project line using the distances stored in BUFFER_DISTANCE.

MAP PROJECTION PARAMETERS 

Projection                           ALBERS
Units                                METERS
Datum                                HPGN
Spheroid                             GRS1980
1st standard parallel                24   0  0.000
2nd standard parallel                31  30  0.000
central meridian                    -84   0  0.000
latitude of projection's origin      24   0  0.000 
false easting (meters)               400000.00000
false northing (meters)              0.00000

DATA SOURCES CONTACT(S): 

Name:             FDOT Transportation Statistics Office, EMO Office
Abbr.name:        FDOT
Address:          605 Suwannee St. MS 37
                  Tallahassee, FL  32399-0450
Phone:            (850) 488-4111 x-119 
Web site:         www.dot.state.fl.us
Phone:            (850) 488-4111 x-119

FGDL CONTACT: 

Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html