Folks,
The Geographic Calculator has this feature. Information is available at
http://www.bluemarblegeo.com/products.asp?id=1
>> 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.
>> Quoting Walter from the abovementioned thread:
>> > > I would like to build a program (mbx) that asks the user- from
>> > > two points(is this enough?), both local and
>> > > national coordinates. The program then calculates the rotation
>> > > angle and the translation parameters. Then the user can give
>> > > a number of local coordinates and the program can calculate from
>> > > every local coordinates the national coordinates.
>> > > Is this possible with some simple goniometry and pythagoras?
>> > > Is there some information on this subject (books, internet)?
>> Walter, have you built this program? If so, is it available to others?
>> Thanks in advance.
>> _____________________________________________
>> Claude Lavoie
>> Service du soutien � la client�le
>> Direction des technologies de l'information
>> Minist�re des Transports du Qu�bec
>> 35, rue de Port-Royal Est, salle 5.00 a
>> Montr�al (Qu�bec)
>> H3L 3T1
>> T�l�phone: (514) 873-6280
>> T�l�copieur: (514) 873-8203
>> Courriel: mailto:[EMAIL PROTECTED]
>> _____________________________________________
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