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The Graphical Data Interface (GDI) provides map style graphical access to the model data, and also allows the inclusion of bitmap (BMP) or Drawing Interchange File (DXF) images as a reference background. Using the GDI, the User can draw the model schematic using point-and-click mouse entry, coordinate value entry, or relative distance and angle entry. The GDI provides pop-up data screens for editing and viewing of the various pipe, node and customer data and analysis results.

The GDI includes a wide variety of tools for modifying the pipe, node, and customer model features including routines for adding, deleting and moving features. Various zoom commands including the ability to zoom in by a User specified window, zoom by a User specified scale, and zoom to a previous view allow the User to easily move around the model image. A robust set of color coding and tracing routines enhance the User's ability to graphically review the analysis results and the system's performance. The trace routines are complimented by the inclusion of what we refer to as "attribute" valves. The attribute valve feature was developed to assist in the design and layout of emergency isolation areas. A complete set of annotation routines allows the User to include notes and references in the model graphics.

The GDI display can include:

  • Two-point, polyline, and arc style pipe symbols
  • Node, customer, and pseudo service line symbols
  • Pipe, node, and customer data values as text
  • Piping symbols for non-pipe type elements
  • User defined annotation
  • Attribute (isolation) style valves
  • Flow direction arrows
  • And multiple background reference images.

The User may customize the GDI's display properties by setting display colors, line and symbol types, and display size and width.

The GDI tools are accessed through descriptive tool icons contained on function based "fly-out" tool bars, through a command line and list interface, and through a floating tool palette which can be arranged, sized, and placed to meet the User's preference.

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