Raster Handler for ERDAS Imagine to MapInfo is a specialized software driver (DLL) that allows MapInfo Professional to natively open and display ERDAS Imagine (.img) raster files without requiring manual conversion. Key Features and Functionality
Seamless Integration: It acts as a bridge between high-end remote sensing data and GIS analysis, allowing georeferenced images or GIS grids from ERDAS Imagine to be used as backdrop layers or for spatial queries within MapInfo.
Direct Access: Instead of exporting files to intermediate formats like GeoTIFF, the handler allows MapInfo to read the binary .img format directly.
Multiband Support: ERDAS files often contain multiple data “bands” (e.g., different spectral frequencies). The handler enables MapInfo to focus on the primary band or select specific bands for display.
Automated Invocation: MapInfo uses a system of raster handlers with .rh extensions. When you attempt to open an ERDAS file, MapInfo checks its internal list of handlers alphabetically until it finds the one that can successfully decode the .img format. Modern Context: MapInfo Pro Advanced
In newer versions of MapInfo (specifically MapInfo Pro Advanced), the older legacy handlers have largely been replaced by a more powerful Advanced Raster Handler (.rha). This newer engine:
Supports a wider variety of complex raster and grid formats natively.
Can convert ERDAS .img files directly to MapInfo’s native .grd (Vertical Mapper) format for faster processing.
Includes built-in tools like the Seamless Manager to treat multiple raster tiles as a single continuous layer. Summary of Raster Management in MapInfo File formats: ERDAS IMAGINE | DANS
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