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Data Delivery Updates
High Resolution Orthoimagery (HRO)
April 1, 2013: Changes with the delivery of HRO Tiled Products
As part of the National Geospatial Program's plan for delivering data from a public Internet cloud provider by the end of 2014, The National Map Viewer is offering staged products for faster and more efficient downloads. As part of this data staging effort, USGS is transitioning High Resolution Orthoimagery (HRO) tiled products from an uncompressed GeoTIFF (.tif) image product to a JPEG 2000 (.jp2), 5:1 compressed product for staged download. The transition to JPEG 2000 products began on February 25, 2013. The process to replace the .tif image file with the .jp2 file will occur over time as we work through our current inventory. When data is downloaded from The National Map Viewer, be aware that the staged 1500x1500m tile may be in either format (.tif or .jp2) until the transition is complete.
Eventually, all new HRO tiles from The National Map Viewer will be available only as JPEG 2000, 5:1 compressed products. The original GeoTIFF imagery will be archived and available for download through Earth Explorer (http://earthexplorer.usgs.gov/) for users that still need it.
To help with the transition, we provide downloadable file conversion scripts to assist users that need raster data in other formats. These scripts require either Geospatial Data Abstraction Library (GDAL) or Esri ArcGIS software for raster data file conversions. The documentation is in HTML and is under the 'How_To' folder.
If you have questions or concerns about these changes, please contact us at email@example.com.