Convert BIL to ADF

Understanding BIL and ADF file formats

BIL (Band Interleaved by Line) is a raster image format commonly used in remote sensing and geographic information systems (GIS). It stores image data in a way that each line contains all bands for that line, making it efficient for certain types of image processing.

ADF (Arc/Info Binary Grid) is a proprietary raster data format developed by Esri for storing gridded data, such as digital elevation models (DEMs) and other spatial datasets. ADF files are typically used within Esri's ArcGIS and ArcInfo software suites.

Why convert BIL to ADF?

Converting BIL to ADF is often necessary when integrating remote sensing data into Esri GIS environments, as ADF is natively supported by ArcGIS tools for advanced spatial analysis and visualization.

How to convert BIL to ADF

The most reliable way to convert BIL files to ADF format is by using GIS software that supports both formats. GDAL (Geospatial Data Abstraction Library) and ArcGIS are the top choices for this conversion.

Using GDAL

GDAL is a powerful open-source library for raster and vector geospatial data formats. To convert a BIL file to ADF, use the gdal_translate command:

gdal_translate -of AIG input.bil output_folder

This command reads the input.bil file and writes the output as an Esri Arc/Info Binary Grid (ADF) in the specified output_folder.

Using ArcGIS

ArcGIS provides a user-friendly interface for raster conversion:

1. Open ArcGIS and add your BIL file to the map.
2. Go to ArcToolbox → Conversion Tools → To Raster → Raster to Other Format.
3. Select your BIL file as the input and choose Esri Grid as the output format.
4. Specify the output location and run the tool.

Best software for BIL to ADF conversion

• GDAL – Free, open-source, command-line tool with broad format support.
• ArcGIS – Industry-standard GIS software with comprehensive raster conversion tools.

Tips and considerations

• Ensure your BIL file includes the necessary header and auxiliary files (.hdr, .blw) for accurate georeferencing.
• ADF format is folder-based; the output will be a directory containing several files, not a single file.
• Check the spatial reference and data integrity after conversion.