FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005

TITLE: PARCELS DISSOLVED BY DECADE OF ACTUAL YEAR BUILT - FDOT DISTRICT 2

Geodataset Name:       YB_DECADES_D2
Geodataset Type:       SHAPEFILE
Geodataset Feature:    POLYGON
GENERAL DESCRIPTION:
This dataset contains parcels dissolved by the decade of the actual year built for each respective parcel polygon. Parcel boundaries and parcel attribute information including actual year built was obtained from the Florida Department of Revenue's tax database. Actual Year Built for each parcel polygon represents the original year that the structure / building on the property was built. Effective Year Built represents the last date which the structure / building was updated / renovated, etc.
DATA SOURCE(S):                    GeoPlan Center / FDOR
SCALE OF ORIGINAL SOURCE MAPS:     VARIOUS
DATE OF AUTOMATION OF SOURCE:      20041231
GEODATASET EXTENT:                 FDOT District Specific

FEATURE ATTRIBUTE TABLES:

Datafile Name: YB_DECADES_D2.DBF
ITEM NAME WIDTH TYPE
FID
4 OID
Shape
0 Geometry
YB_DECADE
30 String
PARCEL_COUNT
9 Integer
DESCRIPT
30 String
AUTOID
6 Number
FGDLAQDATE
8 Date

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
FID Internal feature number.

Shape Feature geometry.

YB_DECADE The range of the actual year builts by decades.

PARCEL_COUNT Number of individual parcels in dissolved polygon

DESCRIPT Based on YB_DECADE.

AUTOID FGDL Internal Feature Number.

FGDLAQDATE The date FGDL acquired the data from the source.

USER NOTES:
GeoPlan relied on the integrity of the attribute information within the original data.
The information below represents the min and max dates available 
for each county's actual year built field [AYRBLT].  The field 
[AYRBLTMAX] represents the counties maximum year built date 
available.  The field [AYRBLTMIN] represents the counties minimum 
year built date available.

NAME		AYRBLTMAX	AYRBLTMIN
ALACHUA		1993		1900
BAKER		1993		1900
BAY		2005		1796
BRADFORD	1992		1900
BREVARD		1992		1875
BROWARD		1997		1900
CALHOUN		2005		1877
CHARLOTTE	2003		1900
CITRUS		-		-
CLAY		2005		1877
COLLIER		1992		1900
COLUMBIA	1995		1900
DESOTO		1992		1900
DIXIE		1999		1900
DUVAL		2000		1863
ESCAMBIA	1992		1901
FLAGLER		1991		1900
FRANKLIN	2004		1900
GADSDEN		2005		1823
GILCHRIST	1991		1900
GLADES		1992		1900
GULF		2005		1900
HAMILTON	1991		1900
HARDEE		2004		1890
HENDRY		1993		1910
HERNANDO	2003		1849
HIGHLANDS	-		-
HILLSBOROUGH	2005		1842
HOLMES		2004		1856
INDIANRIVER	1995		1900
JACKSON		2004		1896
JEFFERSON	2004		1855
LAFAYETTE	1991		1901
LAKE		1992		1850
LEE		1993		1900
LEON		2005		1827
LEVY		2003		1900
LIBERTY		1989		1918
MADISON		1992		1900
MANATEE		2005		1860
MARION		2003		1851
MARTIN		2005		1873
MIAMI-DADE	1991		1901
MONROE		1993		1830
NASSAU		1991		1900
OKALOOSA	1991		1901
OKEECHOBEE	1993		1910
ORANGE		2004		1879
OSCEOLA		1994		1900
PALMBEACH	1991		1900
PASCO		2004		1900
PINELLAS	1991		1901
POLK		2004		1860
PUTNAM		1993		1900
SANTAROSA	-		-
SARASOTA	2003		1882
SEMINOLE	1993		1900
STJOHNS		1993		1792
STLUCIE		1993		1890
SUMTER		-		-
SUWANNEE	1992		1901
TAYLOR		1992		1900
UNION		1992		1900
VOLUSIA		1993		1870
WAKULLA		2004		1900
WALTON		2005		1898
WASHINGTON	-		-

A note concerning data scale:

Scale is an important factor in data usage. Certain scale 
datasetsare 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 sectionand 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

REFERENCES:
Department of Revenue:

http://www.myflorida.com/dor/

DATA LINEAGE SUMMARY:
GeoPlan received county wide parcels datasets from the 
Florida Department of Revenue (FDOR) in 2005 via DVD. 
The datasets were in shapefile format, and in the following projections: 
State Plane Projection NAD 83, Feet (East, North, and West). 
The datasets were projected to FGDL Albers HPGN.

Process for dissolving parcel polygons based on decade of actual year built:

- For each county, FDOR tables containing the Parcel Actual Year Built 
data were joined to the shapefile, and a new field representing 
Actual Year Built [AYRBLT] was populated based on the table information.

- The parcel polygon boundaries were then Dissolved 
(as single part features) based on the Actual Year Built [AYRBLT] field.

- The shapefiles were then merged together based on the FDOT 
District that each County fell in, creating seven district wide shapefiles.

- A decade lookup table was created to represent decades between 
1800 - 2005. The lookup table had 2 fields: [YEAR] for individual year 
between 1800-2005, and [DECADE] for unique decade identification 
number. The decade lookup table was then joined to the Dissolved 
District shapefiles.

- Another single part Dissolve was run on the shapefiles based on 
the decade.

- The [DECADE] field was then renamed [YB_DECADE].

- The final shapefile represents polygons of parcels which 
structures/ buildings were originally built in the same decade.

- Several other fields were added to the attribute table:
   [AUTOID] - A GeoPlan Center Internal Feature number
   [DESCRIPT] - Based on [YB_DECADE]
   [FGDLAQDATE] - The date FGDL acquired the original data from the Source.
Process Date: 20060130

MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000

DATA SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:
FLORIDA DEPARTMENT OF REVENUE
FDOR
2410 Allen Rd.
Tallahassee, FL
32303
(850) 488-9719

http://www.myflorida.com/dor/

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