FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005
TITLE: FOREST TYPES OF 1934
Geodataset Name: FORTYPE1934 Geodataset Type: SHAPE Geodataset Feature: POLYGON
GENERAL DESCRIPTION:
This shapefile represents the forest types of Florida from 1934. It was created from an original 1934 hardcopy paper map of forest types.
DATA SOURCE(S): U.S. Department of Agriculture Forest Service SCALE OF ORIGINAL SOURCE MAPS: 1:100,000 DATE OF AUTOMATION OR SOURCE: 1934 (source), 2002 (scanned/ georeferenced) GEODATASET EXTENT: State of FloridaFEATURE ATTRIBUTE TABLES:
Datafile Name: FORTYPE1934.DBF ITEM NAME WIDTH TYPE SHAPE 8 Shapepoly FOREST TYP 30 Character
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM ITEM DESCRIPTION SHAPE Data attribute inherent to the ESRI shapefile format, which defines the data as a point, polyline, or polygon. FOREST_TYP Forest Type, one of following 10: Cypress - Hardwoods Loblolly - Hardwoods Longleaf - Scrub oak Longleaf - Slash Longleaf - Slash - Cypress Marsh - Prarie - Sand Dunes Mixed Bottomland Hardwoods Scrub Cypress Scrub Pine Slash - Cypress
USER NOTES:
Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling 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 propertyparcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county orregional level. 1:250000 scale datasets are recommended for projects that are at the regional orstate level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Makesure you are familiar with your data before using it for projects or analyses. Everyeffort has been made to supply the user with data documentation. For additionalinformation, see the References section and the Data Source Contact section of thisdocumentation. For more information regarding scale and accuracy, see our web pages at: http://www.geoplan.ufl.edu/education.html
FGDL QUALITY ASSURANCE STATUS:
-Digitized from 1934 hardcopy map
REFERENCES:
DATA LINEAGE SUMMARY:
Original 1934 hardcopy map was scanned in quads using a UMAX Power Look 2100xl scanner. The hardcopy map was scanned at 300dpi (dots per square inch). The quads were recombined to form the original map in Photoshop 6 and saved as a tiff image. The tiff image was then georeferenced using a DRG100.img image using ERDAS Imagine. A subset of the panhandle was taken from the tiff image and georeferenced as well using the DRG100.img. The two georeferenced images were then mosaiced together using ERDAS Imagine. The mosaiced image was then subsetted using an AOI of the State to remove the extra border. The final State.img was imported into Arc GIS and a shapefile was created of the different forest types through digitizing, at a scale of 1:100,000. Any sliver polygons were removed using the eliminate/reselect command in arc.
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: Florida Geographic Data Library Contact Person: Katherine Norris Address: Florida Geographic Data Library 431 Architecture PO Box 115706 Gainesville, FL 32611-5706 Web site: www.fgdl.org
FGDL CONTACT:
Name: Florida Geographic Data Library Abbr. Name: FGDL Address: Florida Geographic Data Library 431 Architecture 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