HRO2006_Index.zip is a shapefile that can be used to determine what images to download. The GeoTIFF images are 733 mb and the JPG images average 25 mb per 4000 X 4000 meter block. The images have a UTM NAD83 meters projection and are from 2006. Some tiles are incomplete and have black areas as a result of the proximity to the flight boundary. The .XML files on the FTP site contain the metadata for the imagery and CALDATE is the date the imagery was flown and collected.
The naming convention for the imagery tiles is based off the U.S. National Grid (USNG). Utah is in USNG grid zone 12T and 12S.
When downloading these .tif images, make sure once they download that your computer has not renamed the file extension to .tif.txt. If it has, remove the .txt from the files extension.
If you have any trouble contact Rick Kelson at (801-538-3237)
HRO 2006 Sample
Users' Comments
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1.
Wed, 12-12-2007 at 09:23 AM
Jeff, thanks for asking. The one foot imagery for the Wasatch Front will be available in mid-January. The delay is because the one foot will be derived from six-inch orthoimagery that is still in the quality checking process. As soon as it's available, we'll have a posting on our web site.
Any chance of being able to view the 2006 HRO Interactive Map at a smaller scale (street-level)? At 730 MB an image, it's a time-costly mistake to guess the incorrect tile.
If you're a GIS user, our imagery indices are now on our SDE Database server. Look in the U024.Indices feature dataset.
We'll soon have these available as shapefile downloads as well.
For non-GIS users, we are planning an interactive map application that will include viewing all the imagery layers with integrated download links but that will not be available until early summer.
Any chance you can get these orthos projected in WGS-84? UHP, UTA, and DNR are all our customers and work across the whole state. It would be nice to be able to show orthos for the entire state to them in a field environment. ESRI MapObjects only supports one datum-region rendering at a time. Unless ESRI will drop the $10K/seat license to ARCObjects, state-wide public safety agencies don't have a seamless solution.
GIS data contained within the SGID uses the Universal Transverse Mercator projected coordinate system (UTM Zone 12 North) using the 1983 North American Datum (NAD83). UTM Zone 12N, NAD 83 is the current state standard for projection, coordinate system, and datum.
The big advantages of the UTM Zone 12N, NAD83 projected coordinate system are: 1) unlike state plane systems, the entire state can be stored within this planar coordinate system; 2) the NAD83 datum, unlike its predecessors, is highly compatible with the datum used by GPS receivers, 3) planar coordinate systems allow for meaningful measurements of distance and area; and 4) UTM coordinate systems control scale error to a maximum of 0.1 percent within each zone.
At the moment there are no plans to provide Utah SGID GIS data in a WGS84-based geographic coordinate system. Although it is possible to reproject vector and raster based data into this and other spatial reference systems.
We do have LizardTech's GeoExpress, but the output file's coordinates are way out there. We are in Roosevelt Utah. The tiff files work properly, but we were hoping to not have to download to many of them (at 730 mb each) We would like to use more of them, so the jpg files would work better. Thanks
