GXF

Geosoft Grid Exchange File, an ASCII grid format mainly used for terrain elevation data but also for raster data for concentrations and similar.   GXF fles are found on the NURE National Uranium Resources USGS data set.  GXF format does not provide coordinate system information, so the coordinate system must be manually assigned after importing images from GXF format.

 

dlg_import_gxf.png

 

To import from GXF format:

 

  1. Choose File-Import from the main menu.

  2. In the Import dialog browse to the folder containing data of interest.

  3. Double-click the file ending in .gxf for the data of interest.

  4. A table and an image will be created.

 

 

eg_import_gxf01_01.png

 

We can double-click on images that are created to view them.

 

eg_import_gxf01_02.png

 

The image appears without using the correct projection.   That is a good reason to avoid using GXF format whenever possible, to avoid the tedious work of finding out what coordinate system is supposed to be used and then assigning it.   

 

eg_import_gxf01_03.png

 

We use the Style panel in the Contents pane to color the image using a palette as seen above.

 

eg_import_gxf01_04.png

 

The display shows uranium concentrations in Alaska.

 

See Also

Style

 

Maps

 

Images

 

DEM, GTOPO30

 

GRD, ESRI .ASC, .GRD

 

GRD, Northwood .GRC, .GRD