About
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The Geologic
Data Assistant (GDA) module for ArcPad is a collection of Environmental
Systems Research Institute (ESRI) shapefiles, XML, and VB script files
that facilitate field data capture for general geologic mapping
projects. The GDA files extend the behavior of ESRI’s ArcPad field
mapping software which, for field use, runs on a PDA under the Windows
CE operating system, although it can run on Windows 95 and later
machine as well.
The module is
designed around an ArcPad ‘applet’ (a VB script extension) which
displays a toolbar that controls the editing of 4 shapefiles: Stations,
Structure, Geolines and Mylar. Custom data entry forms appear upon the
creation of spatial features and VB script routines extend the behavior
of the form. Some features of GDA are:
- shortcut buttons that reduce
‘menu-surfing’
- automatic calculation of unique station
ID’s based on a date/time string and the initials of the geologist
- on-the-fly addition of values to picklist
dbfs
- the ability to plot stations with a
bearing and distance from a ‘datum’ station and the subsequent
relocation of those ‘offset’ stations when the datum is relocated
- enforcement of one-to-many relationships
between stations and related subtables storing non-spatial data
- simple geologic symbolization for points
and lines
- a scratch feature layer (the Mylar
shapefile) for temporary annotation or notes.
This
version of GDA runs best with ArcPad 6.0.3. Errors may occur with other
versions.
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