What is .GRD file? - MapInfo

Vertical Mapper (MapInfo) Grid/Clutter Files

In my previous articles I have explained What is about Map File? - Map Server, How to create a .MAP file from MapInfo .TAB file dataset? - Quantum GIS and many more. In this article I will explain about MapInfo .GRD (Grid) file.

GRD is the file extension for Arc/MapInfo ASCII Grid files. You can read .GRD (Grid) and .GRC (Classified Grid) raster files in MapInfo, Vertical Mapper tools. 

GRD files are especially useful for the wireless sector of the industry that may currently use MapInfo or RF network planning tools that output in the .Grd/.Grc format. Grd file always be in a raster data format.

For more documentation download the developer guide of Pitney Bowes  http://reference.mapinfo.com/software/mapxtreme_windows/english/7_1_0/MapXtreme_DeveloperGuide.pdf