VN-2000 Grid - Vietnam

JustinKJustinK Global Mapper UserPosts: 11Trusted User
edited September 2011 in Technical Support
Mike,

I am currently using v12 and do not see "VN-2000" Projection for Vietnam. Can you create this projection for me or is it listed under a different name?

Thanks,

Justin

Comments

  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited September 2011
    Justin,

    The VN-2000 datum is basically the same as WGS84. It looks like UTM zones 48N and 49N are commonly used with this datum. Just select WGS84 in place of this datum.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • JustinKJustinK Global Mapper User Posts: 11Trusted User
    edited September 2011
    Mike,

    Just found this:
    Google Translated from: http://ciren.vn/uploads/05-2007-QD-BTNMT.pdf . Second Paragraph.

    From MINISTRY OF NATURAL RESOURCES AND
    ENVIRONMENT, SOCIALIST REPUBLIC OF VIETNAM Day 27 month 02 in 2007

    Article 1. Now use the system parameters to switch between international coordinate system
    WGS-84 coordinate system of national and VN-2000 is as follows:
    1. Parameter shifts the origin:
    -191.90441429 M; -39.30318279 m; -111.45032835 m.
    2. The coordinate rotation:
    -0.00928836 " ; 0.01975479" ; -0.00427372".
    3. Scaling length:
    k = 1.000000252906278

    Should I copy the WGS84 Datum and make my own "VN-2000"?


    Justin
  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited September 2011
    Justin,

    Ah based on that there is a shift. I would create your own VN-2000 datum based on the WGS84 ellipsoid and with those transformation parameters. I will likely also add this as a built-in datum.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited September 2011
    Justin,

    If you are using v13 I have completed adding VN-2000 as a built-in datum to a new build. I have placed a new build at http://www.globalmapper.com/global_mapper13.zip with the change for you to try. Simply download that file and extract the contents into your existing v13.xx installation folder to give it a try. If you are using the 64-bit v13 version there is a new build at http://www.globalmapper.com/global_mapper13_64bit.zip .

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com
  • Hi Mike,

    I am using GM 11, is it possible to add 
    VN-2000 datum to my version?

    Regards,
    Krishna
  • bmg_bobbmg_bob Global Mapper Programmer Posts: 1,960
    Hi Mike,

    I am using GM 11, is it possible to add 
    VN-2000 datum to my version?

    Regards,
    Krishna
    You will need to create a custom datum in GM 11, or upgrade to GM 17.

    Cheers,
    Bob
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