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OpenCities Map Wiki - Convert local coordinate system to standard - 2D conformal transformation
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    - Convert local coordinate system to standard - 2D conformal transformation

      Product(s): Bentley Map, MicroStation
      Version(s): V08.11.07 and later, CONNECT Edition
      Environment: N/A
      Area: Geographic Coordinate Systems
      Subarea: Transformation

    2D Conformal Transformation

    Click on the link below to download the document and example datasets that describe how to compute and apply rotation, scaling, and XY translation in order to convert local coordinate systems into standard coordinate systems.

    2D Conformal Transformation.pdf

    Example Data.zip

    Topics Included

    • Common Reasons for Performing a 2D Conformal Transformation in Surveying and Mapping
    • Mathematically Transform Points from a Local Coordinate System to a Standard Coordinate System
    • Graphically Transform MicroStation Graphics with Known Transformation Parameters
    • Compute the Four Transformation Parameters 
    • Reference Project Coordinate Systems to Standard Coordinate Systems
    • Using the Helmert Transformation 
    • Compute the Grid to Ground Scale Factor as an Affine Parameter
    • Handling Redundancy with Least Squares 
    • Statistical Analysis of Least Squares Adjustments
    • Matrix Calculations in Microsoft Excel

    • Coordinate
    • Raster
    • MicroStation
    • geographic
    • GCS
    • Helmert
    • Bentley Map
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    • Kevin McDonald Created by Bentley Colleague Kevin McDonald
    • When: Wed, Apr 18 2012 11:21 AM
    • Inga Morozoff Last revision by Bentley Colleague Inga Morozoff
    • When: Tue, Feb 4 2020 11:07 AM
    • Revisions: 14
    • Comments: 1
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