Community 3.3.6

[Saad Farrell]

Hi again!

If your input is in a Roll/Pitch/Yaw (RPY) system and defined in a geographical system, how does C3D deal with the meridian Convergence?

[David Alamillo]

Hello Saad,

Indeed, the Omega/Phi/Kappa (OPK) orientation system is defined in a projected system while the Roll/Pitch/Yaw (RPY) system is defined in a geographical system. In Correlator3D, processing occurs in a projected system. This means that if RPY is provided as input data, a conversion to OPK is first performed. This conversion does take into account the meridian convergence through a minimization based on geographical coordinates. Consequently, the conversion results may slightly differ from one project to another.