GMS:CPP
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A CPP (Carte Parallelo-Grammatique Projection) system is a local system. The origin of the system must be defined in latitude/longitude decimal degrees.
The conversion from of a point from latitude/longitude to CPP is:
newpointx = R * (pointlongitude - originlongitude) * cos(originlatitude) newpointy = pointlatitude * R
The conversion of a point from CPP to latitude/longitude is:
newpointlongitude = originlongitude + pointx / (R * cos(originlatitude)) newpointlatitude = pointy / R
R = 6378206.4 m. (Clarke 1866 major spheroid radius)
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