Re-coordinating site drawings

Hello Ladies and Gentlemen, I have a 3D site survey possibly carried out using some provisional local controls. With clearly identifiable features of known global and local coordinates, is there a simpler way of re-align the site drawings in the global coordinate system without having to employ the Microstation modification tools?,

I am thinking of acs of the reference file.

Could the effect of such microstation modifications be propagated to other vertical packages like InRoads, Geopak etc? 

I would very much welcome video demonstrations if it is possible.

Many thanks in advance.

  • Cahma,

    I think your best bet is to establish Geographic Coordinate Systems for the data in your files. Then they can all be referenced to each other very easily. Other advantages are exchanging data with Google Earth, being able to read Latitude Longitude, etc. Take a look at the Wiki article MicroStation | General Wiki | GeoCoordinate with MicroStation (communities.bentley.com/.../8935.aspx)

    Barry



  • Simple translation may not be enough. Grid to ground factors must be dealt with also.

  • Thank you Everyone. We all know the state of play know. I am however heartened by the pace of development at Bentley and of course this is pretty easy for our Ever Respected Development Team to incoporate into the next generations of MicroStation. MicroStation is increasingly becoming central to what Bentley is trying to achieve and it is important that a tool capable of resolving translation and rotation issues resides within Microstation.

    We are going to assist the development team with positive critisism.

    Well done Ladies and Gentlement. More discussion topics will follow shortly

  • Lorys, in my previous post I indeed mystyped as i inteded to write Delta TR and Delta Rot...probably wouldn;t have been still too clear.

    By Delta T (or Delta Translation) I mean the coordinate difference - or "amount" - of a reference point covered by the translation (x2-x1, y2-y1, z2-z1) and by Delta R (or Delta Rotation) the "amount" of the rotation.

  • OK InRoads does only warp/transform InRoads data like "Survey data, surfaces, and geometry".

    With Bentley map you're getting warp tool where to set Source (local) and target (project) control point thor the warp calculation. This control point matrix can be saved to a file (ascii) to repeat the warp tool different times with different dgn data.

    But what Lorys explains sounds useful especially looking to the Microstation geographic coordinate tools. I never tried it like this way but
    it might work:

    First the "placemark" tool.:

    then use this to set your project coordinates onto your local control point: (my example for a projected german (mercator based) coordinate system) and the
    appropriate values for my first control point).

    Place the placemark to your local point

    repeat this for every control point you have!

    You should get a Microstation geocoordinate system. With this an the reference things you follow Lorys hints and much other threads here
    for changing geocoordinate systems and the dgn data.

    Regards

    Frank

    since 1985: GIS, CAD, Engineering (Civil)  Senior Consultant : [Autodesk Civil 3D , Esri ArcGIS, VertiGIS: in previous days : Bentley MS V4 - V8i, GeoGraphics, Bentley Map V8i, InRoads,  HHK Geograf, IBr DAVID] :  Dev: [C, C++, .NET, Java, SQL, FORTRAN, UML]
    [direct quote by: http://en.wikipedia.org/wiki/Helmut_Schmidt]: "Wer Kritik übel nimmt, hat etwas zu verbergen"
    Wer Grammatik- und/oder Rechtschreibfehler findet, der darf sie behalten :-)