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          • -Geographic - Coordinate Systems - MicroStation
            • Converting GCS from ED50-IGN.ES-UTM30 to ETRS89-UTM30N gives wrong results
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            • -Geo-Coordination With MicroStation
              • Assigning A Geographic Coordinate System
              • Azimuthal Equidistant
              • Convert Lat/Long in Degrees to Northing/Easting in Distance
              • Convert Northing/Easting in distance to Latitude/Longitude Angular
              • Deleting The Geographic Coordinate Systems
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              • The difference between US Survey Foot and International Foot
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              • Using Global Positioning System Devices
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            • Geographic (longitude/latitude) coordinate readouts in
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            • How do you redefine the Coordinates of a DGN, and re-designate the GO?
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            • How to configure/add grid shift files in CONNECT edition
            • Insert Longitude and Latitude Coordinates in a DGN file with Geographic Coordinates Systems in meters
            • Reprojecting to a new Geographic Coordinate System
            • The NAD83 datum is missing for the UTM projection when assigning a coordinate system.
            • Unable to load/create dialog item of type 'IconCmd', id = 29 from dialog "MDGSHOOK"
            • Where can I see the new Australian Geographic Coordinate System GDA2020
            • Why are there differences between the new GDA2020 Australian coordinate system and the previous MGA94?
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    Geo-Coordination With MicroStation

    Introduction

    MicroStation V8i contains several new features related to "Geo-Coordination", or the ability to specify the position of the contents of your design on the earth's surface. Once that position is established, the design can be easily coordinated with other data for which the geographic location is known.

    MicroStation users almost always work in either two- or three-dimensional Cartesian coordinate systems. For designs that represent  manufactured components or assemblies, there is no fixed earth location to consider, and Geo-Coordination does not apply. For designs of infrastructure that occupy a volume of less than about a cubic kilometer (buildings and industrial plants, for example) there is no need to consider the curvature of the earth as a factor, and designers prefer to work in a local coordinate system that is convenient for the building or plant. But as we shall see, establishing the geographic location of the infrastructure provides substantial advantages.

    For larger-scale designs such as roadways, utility outside plant, and natural resource modeling, the conventional approach is to use a Cartesian approximation to the earth's surface that gives acceptable results in the vicinity of the design contents. In the United States, most roadway designs use State Plane coordinate systems. Other country and local governing bodies establish Geographic Coordinate Systems appropriate for their locations. Some natural resource companies and military organization also develop Geographic Coordinate Systems for their particular purposes. Most of the time, a MicroStation user can simply work in the Cartesian coordinate system without considering that it is actually a carefully chosen Geographic Coordinate System.

    For a more in-depth discussion of Geographic Coordinate Systems and how they are chosen, see Geographic Coordinate Systems Fundamentals

    Benefits of Geo-located Design

    MicroStation takes advantage of a knowledge of the geographic location of your design to provide additional capabilities.

    • Referencing other designs and raster data that are also Geolocated is very easy.
    • Similarly, your design can be very easily referenced from other Geolocated designs.
    • You can get the geographic latitude and longitude at any point in the design.
    • You can enter latitude and longitude data
    • If you take your design into the field on a mobile computer, you can interface with a Global Positioning System device to correlate your physical position with the design.
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    • Dan Koval Created by Bentley Colleague Dan Koval
    • When: Fri, Sep 6 2013 4:48 PM
    • Leonard Jones Last revision by Bentley Colleague Leonard Jones
    • When: Mon, Jun 27 2022 8:34 AM
    • Revisions: 5
    • Comments: 2
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