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FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION TITLE: SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT 2008 1-FOOT DIGITAL ORTHOPHOTO IMAGE (DOI) Geodataset Name: SWFWMD_2008 Geodataset Type: Raster Dataset Geodataset Feature: Feature Count: |
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GENERAL DESCRIPTION:
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DATA SOURCE(S): Woolpert, Inc. SCALE OF ORIGINAL SOURCE MAPS: 1 Foot GEODATASET EXTENT: Southwest Florida Water Management District |
FEATURE ATTRIBUTE TABLES:
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
SWFWMD QC The imagery data layer stored in the District's enterprise database is opened in ArcMap. The District's LiDAR project grid is also added. The imagery is scanned at 1:6,000 looking at each LiDAR grid cell individually. If a problem is found, then a point shapefile is created and a point in the location of the problem is added. Comments are added to the shapefile in an attribute field about the problem and a bitmap is created displaying the area with the problem. Each bitmap includes: comments added to the shapefile, grid cell number, date, initials of the QC staff, and whether the image is drawn to the full extent. The overall color balance between cutlines over land, offsets over 8 feet, missing data, anomalies, and overall color balance. |
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Refer to the SWFWMD MTS Report of Specific Purpose Survey, FY2008 Digital Orthophoto Project (B089). |
District Project Title: FY2008 Digital Orthophoto (B089) Purchase Order: 08P00000269. Imagery flight dates - January 10, 14, 21, 25, 27, 29, February 2, 10, 11, 14 2008 Work Order Name: SWFWMD FY2008 Digital Orthophoto Project (B089) |
The DOI was developed to support the DISTRICT's regulatory, land management and acquisition, planning, engineering, and habitat restoration projects. |
DOI was developed to meet or exceed a horizontal accuracy of 4.4-feet root mean square error (RMSE). Refer to the SWFWMD MTS Report of Specific Purpose Survey, FY2008 Digital Orthophoto Project (B089). |
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The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: 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. 1:125000 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 analysis. 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 webpage at: http://geoplan.ufl.edu/education.html |
SWFWMD Data: http://www.swfwmd.state.fl.us/data/ |
The imagery was acquired in 2008 (see FY2008 Digital Orthophoto Project (B089) Cutlines shapefile for a listing of imagery and acquisition dates) using the Leica ADS40 and ADS51 multispectral scanner. The fundamental resolution of the imagery was 0.9-feet over the approximate project area. The Leica ADS40 Airborne Digital Sensor delivers all digital, 12-bit data with the swath width and coverage area of a traditional film camera with up to 5-centimeter spatial resolution. The sensor is capable of simultaneous acquisition of seven bands of information: three panchromatic CCD lines capture information in views forward, nadir and backward from the aircraft, while four multispectral lines capture data in the near-infrared band. Th ADS40 utilizes the Applanix POSAV direct positioning and orientation system that is based on airborne GPS and inertial measurement unit (IMU) technology. POSAV data were reduced using the Applanix POSPAC Air software package (V4.3). All of the source imagery was processed using the Leica GPRO (V3.2) software package. This package provides the capability to perform digital mage processing, aerial triangulation and image rectification. The rectified strips of imagery were then mosaicked together to form a seamless base map over the Project area using the OrthoVista software (version 4.1.1) by Inpho GmbH. Image tiles were then extracted using the I/RASC software package (version 8.04.00) by Z/I Imaging. The GeoTIFFs were compressed to MrSids by SWFWMD using LizardTech GeoExpress 7 at a target ratio of 20:1. Process Date: 2008 |
Projection Transverse_Mercator Datum D_North_American_1983_HARN Units Foot_US (0.304801) Spheroid GRS_1980 Central Meridian -82.000000 Latitude of Projection's Origin 24.333333 False Easting (meters) 656166.666667 False Northing (meters) 0.00000
DATA SOURCE CONTACT (S):
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Southwest Florida Water Management District SWFWMD 2379 Broad Street (Mail Code GIS) Brooksville, Florida 34604-6899 (352) 796-7211 |
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