Convert CGM to ADF

Understanding CGM and ADF file formats

CGM (Computer Graphics Metafile) is a standardized file format for 2D vector graphics, raster graphics, and text. It is widely used in technical illustration, engineering, and aviation industries for exchanging graphics data between different systems and applications.

ADF (Arc/Info Binary Grid or ESRI ArcInfo Coverage Data File) is a proprietary file format developed by ESRI for storing geographic information system (GIS) raster data. ADF files are commonly used in spatial analysis and mapping applications.

Why convert CGM to ADF?

Converting CGM files to ADF format is necessary when you need to integrate vector graphics or technical illustrations into GIS workflows, enabling spatial analysis and mapping of the graphical data.

How to convert CGM to ADF

Direct conversion from CGM to ADF is not commonly supported by most software, as they serve different purposes (vector graphics vs. GIS raster data). The typical workflow involves two steps:

1. Convert CGM to a raster format (such as TIFF or BMP) using a graphics editor or converter.
2. Import the raster file into GIS software (such as ArcGIS) and export or save it as an ADF file.

Recommended software for conversion

• CorelDRAW: Open the CGM file and export it to a raster format (e.g., TIFF) via File → Export.
• Adobe Illustrator: Open the CGM file and export as a raster image using File → Export → Export As.
• ArcGIS: Import the raster image and convert it to ADF using ArcToolbox → Conversion Tools → To Raster → Raster to Other Format.

Online alternatives

Online converters for direct CGM to ADF conversion are rare. You may use online tools to convert CGM to raster formats (like Zamzar or Convertio), then use GIS software for the final conversion to ADF.

Summary

While there is no direct one-step solution for CGM to ADF conversion, using a combination of vector graphics editors and GIS software provides a reliable workflow. ArcGIS is the best choice for creating ADF files from raster images derived from CGM graphics.