FAQ
GGF to CG4 Conversion
What are GGF files?
GGF is the Trimble Grid File, a binary format that stores a geoid model as a regular grid of values. Geoid heights describe the separation between the reference ellipsoid used by GNSS receivers and mean sea level, so a GGF file lets Trimble field and office software convert ellipsoidal heights from satellite measurements into elevations above sea level. Each file represents one geoid model, such as a national or regional model, and the right file is chosen according to the geoid defined in the project's coordinate system. Files can be large, and Trimble Business Center offers to cut a smaller sub-grid for the survey area before sending a file to a field device.
What are CG4 files?
CG4 is a raster format associated with CALS (Continuous Acquisition and Life-Cycle Support) — a program initiated by the US Department of Defense to capture and link military data. CG4 is compatible with a very limited number of digital graphics programs. Files with this extension contain a bitmap that often uses the CCITT4 compression, which is an old fax machine standard used for black-and-white images.
Can reaConverter convert GGF to CG4?
Yes! reaConverter instantly converts .ggf to .cg4 with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert GGF files directly from Windows Explorer using the right-click menu — fast and convenient.
What is reaConverter used for?
reaConverter is a Windows converter for 800+ formats, GIS data among them. For GGF to CG4 it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.
Why choose offline conversion with reaConverter?
reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.
Can I convert GGF to CG4 online?
If you only need to convert a few GGF files to CG4 format, feel free to try our free online free online GGF to CG4 converter — perfect for small batches with no installation needed!
How can I turn GGF files into CG4 on my computer?
The best way to change GGFs to CG4s on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from GGF to CG4.
How can I automate GGF to CG4 files conversion?
reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.
Is there a way to convert GGF files to CG4 using the command prompt?
reaConverter provides full access to all its features via Windows command line, including a high-performance command-line ggf to cg4 converter for batch processing.
What else can I do with reaConverter?
Convert DICOM filesCrop photoChange format settingsCopy metadata (EXIF, IPTC)Convert RAW photos
Related conversions
Other ways to convert GGF files, and other sources that convert to CG4.
