Two indexes are available - one for the lowest tiling level (smallest extent) based on the idxp7500 tiling index and one for the user tiling level (2nd tier) based on the idxptrmbr tiling index.
Each of the tiling indexes themselves are described with their own metadata. This metadata describes derivatives of each of the indexes that are updated with the current status of individual tiles in the warehouse. A weekly script builds an attribute table based on the subdirectories in the master directories of the warehouse and the contents of each directory.
Some image and raster data exists solely at the higher Zone and KeyRegion levels and is not stored at the idxp7500 or idxptrmbr tiling level. The status indexes will not indicate the availability of this data.
Few of the raster data sets in the warehouse have coincident extents so these status indexes can be used to determine which data sets are available for a given area of interest.
The items in the status index attribute tables are dynamic, reflecting the current directory structure of the warehouse raster library. As new data is acquired or processed into a different format new directories are added. The items names are auto-generated from the directory names and are generally descriptive. However users should access data set metadata and other documentation in the KCGIS Spatial Data Catalog for additional information.
The status is designated as either Y for the data tile's presence or N for its absence. No other information regarding the data tile or the data set is provided. Users are directed to the data set metadata for this information.
The presence of a tile does not necessarily indicate that the tile has actual useable data to its full extent, as tiles are created where any data exists within that extent. For more information regarding the actual extent of a given dataset, please see the allextents.shp shapefile in the KCGISDW raster library.
The other attributes in the shapefile dbf are dynamic, being generated from the current subdirectory list in the raster library. Some modification of the names is made to accomodate the naming limitations of the dbf format. The item name indicates the dataset that is stored in that library.
The value for each item is either a 'Y' for Yes, the tile exists, or 'N', the tile does not exist.