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<< Click to Display Table of Contents >> Using Your DWG Drawings as Maps |
  
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<< Click to Display Table of Contents >> Using Your DWG Drawings as Maps |
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WireCAD ENT supports the use of DWG maps to display equipment and backbones.
Concept
WireCAD can calibrate or georeference any properly scaled drawing to two known control points. These control points typically reference survey markers in the drawing with their associated GPS coordinates. Control points can be any geometry in the drawing for which you know the GPS latitude and longitude. In other words, the control points can be any two points as long as they have known coordinates in both systems.
Note WireCAD uses the term Calibrate synonymous with georeference. Calibration or georeferencing is the process of aligning the WCS (world coordinate system) of the drawing with the GPS coordinate system.
Coordinate System Alignment Showing Four Control Points for Illustration. WireCAD Requires Only Two Control Points
Once the drawing has been calibrated, the cursor location is displayed in both Drawing and GPS coordinates.
Further, WireCAD can then be used to associate your Locations table entries to specific GPS coordinates.
Once the Locations table entries have been associated with corresponding GPS coordinates we can use that data to automatically draw:
•Location Markers. Location markers can be any CAD Block of your choice.
•Panel Markers. Panel markers can be any CAD Block of your choice.
•Backbone Markers. Backbones will be represented using polylines with the vertexes defined by the GPS coordinates of the end point locations as well as Via locations.
Related Topics
Display Tab of the Drawing Mapping Tools interface.
Pseudo Procedure
The following is a rough procedure for automatically creating a drawing that shows all locations in the Locations table,all SysNames in the Project Equipment List, and all Backbones in the Backbones grid.
Prerequisites
You will need a DWG drawing of your plant or campus that is drawn to scale. The scale used does not matter as long as it is applied consistently. You will need the GPS coordinates of two control points in the drawing.
1.Calibrate the drawing using Mapping Tools>GPS>Calibrate.
2.Use the Mapping Tools>Tools>ID GPS Location Coord tool to specifically associate your named locations to GPS coordinates.
3.Use the Mapping Tools>Display>Location Markers tool to display all of the Locations in the Locations table that have GPS coordinates.
4.Use the Mapping Tools>Display>Panel Markers tool to display all of the SysNames in the Project Equipment List that have Locations in the Locations table that have GPS coordinates.
5.Use the Mapping Tools>Display>Backbone Markers tool to display a polyline representing the backbone between location/panels that have Locations in the Locations table that have GPS coordinates.