|
|
| Line 1: |
Line 1: |
| A CPP (Carte Parallelo-Grammatique Projection) system is a local system. The origin of the system must be defined in latitude/longitude decimal degrees.
| | #redirect [[CPP Coordinate System]] |
| | |
| The conversion from of a point from latitude/longitude to CPP is:
| |
| | |
| newpoint<sub>x</sub> = R * (point<sub>longitude</sub> - origin<sub>longitude</sub>) * cos(origin<sub>latitude</sub>)
| |
| newpoint<sub>y</sub> = point<sub>latitude</sub> * R
| |
| | |
| The conversion of a point from CPP to latitude/longitude is:
| |
| | |
| newpoint<sub>longitude</sub> = origin<sub>longitude</sub> + point<sub>x</sub> / (R * cos(origin<sub>latitude</sub>))
| |
| newpoint<sub>latitude</sub> = point<sub>y</sub> / R
| |
| | |
| R = 6378206.4 m. (Clarke 1866 major spheroid radius)
| |
| | |
| {{Navbox GMS}}
| |
| [[Category:Coordinate Systems]] | |
