Landsat Imagery h4. CalView Landsat Images == This directory contains Landsat images for the State of California, as part of the CalView project. The images have all been reprojected to the California Albers Projection, NAD 83 datum, and provided in GeoTiff format. The source Landsat image files upon which these images are based can be accessed at a Landsat images http://casil.ucdavis.edu/casil/landsat5.usgs.gov. The file naming convention of all CalView images is as follows: == *l5_ppprrrYYYYMMDDbBB(B) where:* * *l5 = Landsat-5 mission* * *ppp = starting path of the product* * *rrr = starting row of the product* * *YYYYMMDD = acquisition date of the image* * *BB(B) = band* == In the filename, the part containing l5_ppprrrYYYYMMDD is known as the id of the image. The part after the id identifies the specific band(s) of the image. The monochromatic bands are: 10, 20, 30, 40, 50, 60, 70. The composite bands are: 321 (true-color image) and 457 (false-color image). For instance: l5_4403420010930b60.tif describes a Landsat scene at Path/Row 44034, acquired on September 30, 2001. This GeoTiff image contains band 60 (infrared). ------ The CalView images can be accessed in several ways: The user can quickly access all the images we have created by accessing the "all":all subdirectory. The user can also access the images via the following classifications: == * *by_band -* The images are organized according to one of the nine available bands. Composite images can also be accessed here * *by_id -* The images are organized according to their id, as described above * *by_path_row* - The images are first organized by their path/row, followed by the full date of when the images are acquired * *by_year* - The images are organized by year. Currently the acquired images span between the years of 1999 and 2002, inclusive == Images composed of three bands (composite images) can be found in composite Preview images for the GeoTiff images can be found in preview. They are also included in the above classification directories A mosaic comprised of the CalView landsat images can be found in mosaic For a comprehensive description of the Landsat Data Sets, please refer to the following page: == "Landsat Data Sets":http://eosims.cr.usgs.gov:5725/DATASET_DOCS/landsat7_dataset.html == The following map illustrates CalView's Landsat coverage by Path/Row: ==