Spherical Principal Curves

Cal.recon | Calculating reconstruction error |

Crossprod | Crossproduct of vectors |

Dist.pt | The number of distinct points. |

Earthquake | Earthquake |

Expmap | Exponential map |

ExtrinsicMean | Finding Extrinsic Mean |

GenerateCircle | Generating circle on sphere |

IntrinsicMean | Finding Intrinsic Mean |

Kernel.Gaussian | Gaussian kernel function |

Kernel.indicator | Indicator kernel function |

Kernel.quartic | Quartic kernel function |

Logmap | Logarithm map |

LPG | Local principal geodesics |

PGA | Principal geodesic analysis |

PrincipalCircle | Principal circle on sphere |

Proj.Hauberg | Projecting the nearest point |

Rotate | Rotating point on sphere |

Rotate.inv | Rotating point on sphere |

SPC | Spherical principal curves |

SPC.Hauberg | principal curves by Hauberg on the sphere |

Trans.Euclid | Transforming into Euclidean coordinate |

Trans.sph | Transforming into spherical coordinate |

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