The ASRP (ARC Standard Raster Product) Reader allows FME to access data in the ASRP format.
Overview
ASRP is a military format that conforms to the ISO 8211 standard, and its data is derived directly from ADRG.
ASRP data is divided into geographic data sets as Distribution Rectangles (DRs). ASRP folders contain a general information file (.GEN extension) and one or more ASRP zone distribution rectangle (ZDR) image files (.IMG extension)). The GEN file provides image parameters and support data for the ZDR image files associated with a DR. For each dataset, image data within a ZDR image file is returned as a single feature, since this feature will contain the entire image data of one ZDR image file.
All ASRP data is assumed to be in LL84. Data in polar zones will be automatically converted to LL84, which may result in some distortion of the image.
Reader Overview
FME considers a single ASRP general information file to be a dataset. The ASRP general information file contains the ZDR image file names. The image files are raster files containing pixel data, and each pixel in the file is a point in a single FME raster feature.
FME Raster Features
FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data.
For comprehensive information about how FME processes raster data, see Rasters.
ASRP only supports rasters that have a single UInt8 band with an RGB24 palette.