ASRP (ARC Standard Raster Product) Reader

Licensing options for this format begin with FME Desktop Professional Edition.

The ASRP (ARC Standard Raster Product) Reader allows FME to access data in the ASRP format.


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. The topics below describe how FME processes raster data.

About FME Rasters Tiling and Mosaicking
Raster Properties Band Combining and Separating
Band Properties Band and Palette Selection
Palette Properties Raster Processing
Compression Raster versus Vector Features
Pyramiding Raster File Naming
Interleaving World Files
Interpretation and Data Type TAB Files
Palette Resolution  

ASRP only supports rasters that have a single UInt8 band with an RGB24 palette.