Package ilog.views.maps.defense.format.cadrg

This package contains classes for reading CADRG files.

See: Description

Class Summary

Class	Description
IlvCADRGCoverageList	This utility class arranges and orders CADRG coverages.
IlvRasterCADRGReader	CADRG Raster reader.

Package ilog.views.maps.defense.format.cadrg Description

This package contains classes for reading CADRG files.

About the CADRG Format

The Compressed ARC Digitized Raster Graphics (CADRG) format is a map format for scanned maps, which is published by the US National Imagery and Mapping Agency (NIMA).

The CADRG readers provided in this package are based on specification document MIL-C-89038 of October 6th, 1994. Specification can be downloaded from http://earth-info.nga.mil/publications/specs/

Basically, a CADRG database covers an area with scanned maps of various scales. It is composed of a main directory that includes a table of contents file, called A.TOC, which can be read with an IlvCADRGTocReader. This main directory is divided into subdirectories, each corresponding to a specific coverage. These subdirectories contain the CADRG frames that make up the coverage. These frames can be read with a IlvCADRGFrameReader.

To automatically read a CADRG coverage using the Perforce JViews load-on-demand mechanism, you can use an IlvCADRGLayer.

CADRG data is distributed on CD-ROM by NGA. A sample CADRG data base is provided on the data disk.

Since:

Perforce JViews 3.0