Each of these formats is discussed briefly below. If none of these formats are directly readable by software on your system, then your best bet is probably to write a program to input and translate the GXF format. Extensive description of this format is given below. Software that supports the GXF standard will be able to import properly formatted GXF files and export grids in GXF format.
All distances are in meters.
Each labeled data object has a label line followed by one or more data lines. The data associated with that label are found on one or more lines that follow the label. All lines in a GXF file must be less than or equal to 80 characters in length. Any lines that are not part of a labeled data object are ignored and can be used to place comments within a GXF file. Programs that read GXF files will skip such comment lines while they search for the next GXF data object.