# Wiki

Clone wiki# Nuclear_Morphology / data / Nuclear statistics

These are values automatically calculated for nuclei, and displayed in the Nuclear charts tab

They are:

Statistic | Dimension | Formula | Description |
---|---|---|---|

Area | Area | the two dimensional area of the nucleus | |

Perimeter | Length | the length of the nuclear perimeter | |

Max feret | Length | the maximum caliper diameter across the nucleus | |

Min diameter | Length | the shortest diameter through the centre of mass of the nucleus | |

Variability | Angle | the square root of the sum-of-squares difference at each index between between the nuclear profile and the dataset median profile, normalised to the length of the median profile. | |

Ellipticity | None | H/W | the height divided by width of the nuclear bounding box in the vertically oriented nucleus |

Aspect ratio | None | W/H | the inverse of ellipticity |

Elongation | None | (H-W)/(H+W) | the bounding height minus the bounding width, divided by the bounding height plus the bounding width |

Regularity | None | (piHW)/(4*area) |
A measure of how regular the shape is; does it have rotational symmetry |

Circularity | None | `(4*pi*area)/(perimeter^2)` |
the closeness of the nucleus to a circle, between 0 and 1, where 1 is a perfect circle. |

Bounding width | Length | the width of the bounding rectangle of the nucleus, after rotation to vertical | |

Bounding height | Length | the height of the bounding rectangle of the nucleus, after rotation to vertical | |

Angle between reference points | Angle | the angle between the reference point, the centre of mass, and the orientation point | |

Length of hook [rodent sperm only] | Length | the distance from the vertical region defined by the top and bottom vertical points to the lower x-edge of the bounding rectangle of the vertically oriented nucleus | |

Width of body [rodent sperm only] | Length | the distance from the vertical region defined by the top and bottom vertical points to the upper x-edge of the bounding rectangle of the vertically oriented nucleus |

Updated