At 11:50 15.12.99 -0500, you wrote:
>Last July, Cliff Mugnier, Jacques Paris, and Walter ... (I only kept the
>last message of the thread in which Walter's family name is not mentioned)
>had an interesting discussion about coordinate transformation from a "Dig"
>site local coordinate system to a projected system, and about whether a
>3-parameter rather than a 6-parameter (as in MapInfo) transformation could
>suffice.
>
>I have to import into MapInfo a DXF file (with coordinates from a local Non
>Earth system) of a construction site of roughly 1 km x 1 km, and transform
>these coordinates in a MTM system. Following Cliff's advice, I intend to
>use a 3-parameter transformation with 2 points known in both coordinate
>systems.
>...
"FlexibleMap" is a transformation tool for MapInfo vector maps, which
does the above-mentioned and other types of transformations -- based on
control points. You may download the help file of this program from my web
site ( http://www.icsinger.de/flxmap_e.htm ), in which some aspects of the
various transformation techniques are discussed.
Regards,
Christian Singer
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