Erdas Imagine (.img)

Erdas Imagine (.img) files are supported by the GeoGateway library for import.

Erdas image layers can be 4-bit, 8-bit, 16-bit unsigned, 16-bit signed, or 32-bit real. Other layer types will cause access to the file to fail.

Note: The 16-bit unsigned and 16-bit signed data will be imported as 32-bit real. Any compressed or missing tiles in the file will be treated as all zero pixels.

Limited support for importing georeferencing information is included. The input bounds are read, however, the map units will be defaulted to METRE (except for UTM, SPCS, LONG, and TM).

Note: The zone and other projection information is suspect even for these georeferencing systems.