FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005
TITLE: USGS 1:24,000 QUARTER-QUAD INDEX
Geodataset Name: QQDIDX Geodataset Type: SHAPE Geodataset Feature: POLYGON
GENERAL DESCRIPTION:
This dataset contains the grid for the USGS Quarter Quadrangles for the state of
Florida.
DATA SOURCE(S): Florida Department of Environmental Protection (FDEP) SCALE OF ORIGINAL SOURCE MAPS: 1 : 12,000 DATE OF AUTOMATION OR SOURCE: 1995-1996 GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES
Datafile Name: QQDIDX.DBF
NAME WIDTH TYPE PRECISION AREA 18 DECIMAL 5 PERIMETER 18 DECIMAL 5 QQDIDX_ 5 DECIMAL QQDIDX_ID 5 DECIMAL QUAD_NAME 40 CHARACTER QUARTER 2 CHARACTER QUAD_NUM 4 DECIMAL NAME 40 CHARACTER DESCRIPT 40 CHARACTER
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM NAME DESCRIPTION QUAD_NAME Name of USGS Quad Sheet QUARTER The Quarter of the USGS Quad Sheet and is as follows: NE -- North East Quarter NW -- North West Quarter SE -- South East Quarter SW -- South West Quarter QUAD_NUM Number of USGS Quad Sheet NAME Name of Quarter Quad DESCRIPT Based on NAME
USER NOTES:
This grid is to be used by FDEP and all the water management districts as the basis for library tiling schemes. This will ensure spatial consistency with regard to geographic extent of tiled data layers between these agencies. At a meeting held October 10, 1995 it was determined that this grid was to be statewide and include that part of the Gulf of Mexico that is described by the Panhandle and peninsula. The cells would be 3.75 minutes on a side to reflect the USGS "quarter-quad" map series, and have a node every 15 seconds. The projection would be geographic and use the HPGN datum. The metric was to be decimal degrees.
This data has not been transformed using known control points.
FGDL QUALITY ASSURANCE STATUS:
-Reprojected datum HPGN to HPGN.
-Tolerances set to FGDL standards.
-Dropped items XMIN, YMIN, XMAX and YMAX from QQDIDX.PAT
-DESCRIPT item was added based on the item NAME.
REFERENCES:
DATA LINEAGE SUMMARY:
The quarter quad grid was created by Henry Norris using ARC/INFO v.7.0.3 (UNIX, SUN SPARC 20).
* Projectdefine is used here. We need a set of known control points in HPGN geographic so that we can transform the grid to them.
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 Department of Environmental Protection Abbr.name: FDEP Phone: 904-488-0130 Web site: http://www.dep.state.fl.us Ftp site: ftp://ftp.dep.state.fl.us/pub/gis/data Contact Person: Phone: 727 896-8626
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