Equal Counts GVF = 0.192; 1 s |
Equal Intervals GVF = 0.880; 1 s |
Natural Breaks GVF = 0.956; 1 s |
EC |
EI |
NB |

(Count data. "Equal Counts" very low GVF. "Natural Breaks" is best map.)

Equal Counts GVF = 0.578; 1 s |
Equal Intervals GVF = 0.636; 1 s |
Natural Breaks GVF = 0.655; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.637; 1 s |
Equal Intervals GVF = 0.650; 1 s |
Natural Breaks GVF = 0.827; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.678; 1 s |
Equal Intervals GVF = 0.729; 1 s |
Natural Breaks GVF = 0.899; 8 s |
EC |
EI |
NB |

("Natural Breaks" best by far. Extreme rate in Kenedy County distorts map.)

Equal Counts GVF = 0.749; 1 s |
Equal Intervals GVF = 0.663; 1 s |
Natural Breaks GVF = 0.766; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.811; 1 s |
Equal Intervals GVF = 0.814; 1 s |
Natural Breaks GVF = 0.858; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.851; 1 s |
Equal Intervals GVF = 0.884; 1 s |
Natural Breaks GVF = 0.904; 7 s |
EC |
EI |
NB |

("Natural Breaks" still best. Suppressing Kenedy County improves map.)

Equal Counts GVF = 0.373; 1 s |
Equal Intervals GVF = 0.697; 1 s |
Natural Breaks GVF = 0.826; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.600; 1 s |
Equal Intervals GVF = 0.654; 1 s |
Natural Breaks GVF = 0.840; 1 s |
EC |
EI |
NB |

("Natural Breaks" best by far, with or without suppression.)

Equal Counts GVF = 0.776; 1 s |
Equal Intervals GVF = 0.749; 1 s |
Natural Breaks GVF = 0.863; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.786; 1 s |
Equal Intervals GVF = 0.862; 1 s |
Natural Breaks GVF = 0.891; 1 s |
EC |
EI |
NB |

("Natural Breaks" best, with or without suppression.)

Equal Counts GVF = 0.331; 1 s |
Equal Intervals GVF = 0.900; 1 s |
Natural Breaks GVF = 0.974; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.329; 1 s |
Equal Intervals GVF = 0.811; 1 s |
Natural Breaks GVF = 0.985; 1 s |
EC |
EI |
NB |

(Count data. "Equal Counts" very low GVF. "Natural Breaks" is best map.)

Equal Counts GVF = 0.858; 1 s |
Equal Intervals GVF = 0.897; 1 s |
Natural Breaks GVF = 0.897; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.916; 1 s |
Equal Intervals GVF = 0.921; 1 s |
Natural Breaks GVF = 0.937; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.952; 1 s |
Equal Intervals GVF = 0.961; 1 s |
Natural Breaks GVF = 0.963; 1 s |
EC |
EI |
NB |

(Very uniform data distribution. All three methods work very well.)

Equal Counts GVF = 0.705; 1 s |
Equal Intervals GVF = 0.702; 1 s |
Natural Breaks GVF = 0.770; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.792; 1 s |
Equal Intervals GVF = 0.805; 1 s |
Natural Breaks GVF = 0.851; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.834; 1 s |
Equal Intervals GVF = 0.898; 1 s |
Natural Breaks GVF = 0.901; 1 s |
EC |
EI |
NB |

(Relatively uniform data distribution. "Natural Breaks" is best map.)

Equal Counts GVF = 0.915; 1 s |
Equal Intervals GVF = 0.915; 1 s |
Natural Breaks GVF = 0.925; 1 s |
EC |
EI |
NB |

(Very uniform data distribution. All three methods work very well.)

Equal Counts GVF = 0.817; 1 s |
Equal Intervals GVF = 0.873; 1 s |
Natural Breaks GVF = 0.883; 1 s |
EC |
EI |
NB |

(Relatively uniform data distribution. "Equal Counts" has low GVF score.)

Equal Counts GVF = 0.898; 1 s |
Equal Intervals GVF = 0.901; 1 s |
Natural Breaks GVF = 0.914; 1 s |
EC |
EI |
NB |

(Very uniform data distribution. All three methods work very well.)

Equal Counts GVF = 0.791; 1 s |
Equal Intervals GVF = 0.854; 1 s |
Natural Breaks GVF = 0.906; 1 s |
EC |
EI |
NB |

(Extreme value in Puerto Rico. "Natural Breaks" works best.)

Equal Counts GVF = 0.386; 1 s |
Equal Intervals GVF = 0.863; 1 s |
Natural Breaks GVF = 0.942; 1 s |
EC |
EI |
NB |

(Count data. "Equal Counts" very low GVF. "Natural Breaks" is best map.)

Equal Counts GVF = 0.737; 1 s |
Equal Intervals GVF = 0.787; 1 s |
Natural Breaks GVF = 0.813; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.829; 1 s |
Equal Intervals GVF = 0.824; 1 s |
Natural Breaks GVF = 0.878; 1 s |
EC |
EI |
NB |

Equal Counts GVF = 0.876; 1 s |
Equal Intervals GVF = 0.909; 1 s |
Natural Breaks GVF = 0.921; 1 s |
EC |
EI |
NB |

("Natural Breaks" is best map. But not big differences.)

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Let us know if (1) you have thoughts or suggestions about natural breaks, the map examples, or other methods, or (2) you are interested in working together on further research on this topic, for publication in the peer-review literature.