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Data Management
23
Data formats
The FmX integrated display uses the Environmental Systems Research Institute (ESRI) 3D
shape-file format for storing the layers of graphical information collected in the field ( for
example, spray coverage, track logging points, and features). The three files in a shapefile “set”
are:
•
The <filename>.dbf file, which contains the feature attributes.
•
The <filename>.shp file, which contains position information.
•
The <filename>.shx file, which is an index file that links the position information with its
attributes.
In this manual, the term shapefile is used to refer to the three files collectively.
The FmX integrated display records all latitude, longitude, and height data in decimal
degrees.
Note – The FmX integrated display reads and writes ESRI ArcView version 2.0 or 3.1 3D polylines,
polygons, and points. The M and Z entity types introduced in ArcView 3.1 can be generated in the
track logging files, but cannot be read by the FmX integrated display. For more information, go to
the ESRI website (www.esri.com).
Editing files
ESRI shape (.shp) and attribute (.dbf) files can be used in many other software packages that
can import or use .shp and .dbf formats.
The Farm Works® software is recommended. For more information, go to
www.farmworks.com.
Data collected by the FmX integrated display can be opened directly into the Farm Works
software. You can make changes to the files and save them on an office computer.
Do not save changes back to the USB memory stick as this could mean that you cannot select
the field with the FmX integrated display.
The Microsoft Excel® spreadsheet software and most database software also let you open and
view the data in the attribute (.dbf) file.
Generating files in the office
The FmX integrated display can load files that you created in office software. Save Shapefile
or Agfile (.gdx) prescriptions to the \AgGPS\Prescriptions\ folder on the card to send rates to a
variable rate controller.
FmX Integrated Display Getting Started Guide
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