Abstract ArcGMT is a new suite of tools for converting Generic Mapping Tool (GMT) grids to a format readable by the Arc/INFO® and ArcView® geographic information system (GIS) packages and, conversely, for creating GMT grids and files from Arc/INFO formats. GMT has arisen as an unofficial standard among geoscientists for producing maps, particularly from marine bathymetry, sidescan sonar imagery, gravity and magnetics data. Many geoscientists have also turned to the mapping, database management and spatial analytical capabilities of Arc/INFO and ArcView. Subsequently, a need has arisen, particularly in the marine geology and geophysics community, for a conversion interface between these two environments. This initial version of ArcGMT is designed for UNIX-based workstations running Arc/INFO version 7.0 or higher and GMT version 3.0 or higher. ArcGMT consists of a series of UNIX shell scripts and Arc Macro Language (AML) files, bundled in an easy-to-use menu interface for use within Arc/INFO. Also described is a `beta' prototype of ArcGMT, still under development, that functions as an extension to ArcView version 3.0 with Spatial Analyst.
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