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  1. #1
    Global Mapper User
    Join Date
    Feb 2011
    Posts
    21

    Default Having trouble importing jpg with .ers

    I have some images from a program called hyper tile that has created a jpg, ers and jgw file. When i try to bring the ers into GM it says the overlay could not be determined.

    I am doing it wrong or is this positioning file type not supported.

    Thanks

  2. #2
    Administrator
    Join Date
    Jun 2007
    Posts
    16,451

    Default

    Just load the .jpg file and the external metadata files (like .ers or .jgw) will automatically be located and used to position the file.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

  3. #3
    Global Mapper User
    Join Date
    Feb 2011
    Posts
    21

    Default

    Ah you are so right. Thanks

  4. #4
    Global Mapper User
    Join Date
    Feb 2011
    Posts
    21

    Default

    Actually there is still an issue with location. The jpg imports but not georeferenced correctly. The header from the ers is:

    DatasetHeader Begin
    Version = "7.1"
    Name = "1-1.ers"
    SourceDataset = "1-1.jpg"
    LastUpdated = Wed Jan 05 06:53:16 GMT 2011
    DataFile = "1-1.jpg"
    DataSetType = Translated
    DataType = Raster
    ByteOrder = LSBFirst
    CoordinateSpace Begin
    Datum = "EPSG:3785"
    Projection = "EPSG:3785"
    CoordinateType = EN
    Rotation = 0:0:0.0
    CoordinateSpace End
    RasterInfo Begin
    CellType = Unsigned8BitInteger
    CellInfo Begin
    Xdimension = 0.07539199078928505
    Ydimension = 0.07539199078911452
    CellInfo End
    NrOfLines = 8192
    NrOfCellsPerLine = 8192
    RegistrationCoord Begin
    Eastings = 17034514.39153242856264114
    Northings = -3182449.72755111381411552

  5. #5
    Administrator
    Join Date
    Jun 2007
    Posts
    16,451

    Default

    In what way is it improperly positioned? Are you being prompted for a projection or is one being automatically assigned?

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

  6. #6
    Global Mapper User
    Join Date
    Feb 2011
    Posts
    21

    Default

    It asks for "Select Projection for 1-1.jpg" and suggests MGA and GDA zone which i am using for previously loaded. After i accept that it puts it in the wrong location 16000km to the SE.

  7. #7
    Administrator
    Join Date
    Jun 2007
    Posts
    16,451

    Default

    Based on the ERS file the projection should be Mercator with the 'Google Maps' datum I think. If you select that it should properly place the JPG file.

    Let me know if I can be of further assistance.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

  8. #8
    Global Mapper User
    Join Date
    Feb 2011
    Posts
    21

    Default

    Yes we have a win, thanks Mike.

 

 

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