What Do You Need?
How do I accurately apply a datum shift to my vector data?
Blue Marble Desktop has a tool just for this purpose. In a Vector Data Conversion job, the Datum Transformation tool uses predefined geographic areas of use to narrow down the list of datum transformations to only those that apply to your data and present you with accuracy ratings for each of the possibilities. With information listings for each datum transformation, you can even cross reference the parameters against other databases to be sure you are making the best possible transformation. For more information, see: