This function provides a histogram of the grain-size distribution with a cumulative percentage curve

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`x` |
A numeric matrix or data frame (see the shape of data(granulo)) |

`xc` |
Define a column |

`hist` |
If TRUE, display a histogram; if FALSE, do not display a histogram |

`cum` |
If TRUE, display a cumulative percentage curve; if FALSE do not display a cumulative percentage curve |

`main` |
Add a title to the current plot |

`col.cum` |
Color in which cumulative percentage curve will be drawn |

`col.hist` |
Color in which histogram will be drawn |

`cexname` |
A numerical value giving the amount by which plotting text and symbols should be magnified relative to the default. |

`cexlab` |
A numerical value giving the amount by which axis labels should be magnified relative to the default. |

`decreasing` |
logical. Should the sort order be increasing or decreasing? |

The obtained graph is the most commonly used by Sedimentologists

A histogram with a cumulative percentage curve

Regis K. Gallon (MNHN) reg.gallon@gmail.com, Jerome Fournier (CNRS) fournier@mnhn.fr

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