Land Boundary Information System
Mapping Data
DOQQ
State Plane - MrSID
1999 Digital Orthographic Quarter-Quad
State Plane - NAD83 - MrSID
You are about to enter an FTP site. The folders are organized by State Plane Zone and then by
"Grid Row" (the first two digits of the DEP quad number). The
files are identified by DEP quad numbers.
Enter FTP Site
About the Data
NOTE: As of August 2002, we have only converted 210 of the 1,057 quads in the state to State Plane projection. We are not
converting on a regular basis because of the labor-intensity. If you need a quad in State Plane, we can
custom-project it for you.
Check the Fly Dates to see
when a photograph was taken.
| Projection: | | State Plane |
| Datum: | | NAD8 |
| Units: | | Feet |
| Graphics Type: | | MrSID |
| World File: | | SDW |
| Resolution: | | 1-Meter |
The files are in MrSID format. MrSID is a proprietary file format that compresses large images to
a fraction of their original file size without quality loss.
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Determining the File Name
Use the Quad Name Locator to find the
DEP quad number.
The file names begin with "Q", followed by the DEP quad number, followed by "NW", "NE", "SW", or "SE" to indicate quarter-quad position within the quad.
Each MrSID quad has up to 5 image files: one for each quarter-quad and one containing a mosaic of the individual pieces.
Downloading Instructions
FTP
is recommended for large downloads.
These images are available on CD, DVD, or portable hard drive for a fee.
Special Software Needed
GIS software that can read a MrSID file is recommended. Be sure to download the SDW file and place it in the same directory as the SID.
ESRI's ArcView supports MrSID format (be sure to turn the extension on).
The
MrSID Viewer and
MrSID GeoExpress View
are stand-alone applications designed to optimize the viewing of imagery
that is in the MrSID imaging format.
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