Locate a data set for download...
Related links...
|
 |
The National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The acquisition specifications for the Indiana 2005 NAIP imagery was a two meter ground sample distance (GSD) image that matches within 10 meters of reference ortho imagery. The imagery acquisition began July 1, 2005 and ended August 15, 2005.
NAIP imagery products are available either as quarter quad tiles in TIFF format or as compressed county mosaics (CCM) in MrSID format. The Farm Service Agency (FSA) created the compressed county mosaic product to provide timely information for the FSA compliance program. The FSA now considers each 2005 county mosaic from the ISDP archive to be a final product. Each county mosaic includes the full extent of an Indiana county, but also includes some surrounding black (no data) areas.
University Information Technology Services at Indiana University is working with IndianaView to acquire the TIFF dataset.
Each county image is archived in a .zip file which includes a MrSID image file (.sid), a MrSID world file (.sdw), an ESRI .aux file (for projection information), and a text file (.txt) file which describes the encoding process, coordinate information and other metadata information.
County Mosaics
Coordinate System: UTM, Zone 16 North, NAD83
Pixel Resolution: 2-meter
Units: meters
Target compression ratio: 15:1
File format: MrSID MG3 (~ 60 MB each)
Quarter Quadrangles
Coordinate System: UTM, Zone 16 North, NAD83
Pixel Resolution: 2-meter
Units: meters
Compression ratio: uncompressed
File format: GeoTiff (~ 34 MB each)
