Description Usage Arguments Details Value Examples

This function results from a modification of the
`hist2d`

function of the gplots package in order
to build the 2D histogram with breaks directly provided as inputs of the
new function.

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`x` |
either a numerical vector to be partitioned or a matrix of 2 numerical columns to be partitioned. |

`y` |
a numerical vector to be partitioned. Not required if x is a matrix. |

`breaks_x` |
a numerical vector. Contains the breaks related to x for the histogram |

`breaks_y` |
a numerical vector. Contains the breaks related to y for the histogram |

`same.scale` |
logical. Default to FALSE. If TRUE, breaks_x will be used for x and y |

`na.rm` |
logical. Default to TRUE. Indicates whether missing values should be removed |

`FUN` |
function used to summarize bin contents. |

The default function used for the argument FUN is the function length. When another function is used, it is applied on x, or on the first column of x if this is a two-column matrix. The lower limit of each class interval is included in the class and the upper limit is not.

Using a given set of breaks per each variable, the function returns :

- Hist.Values
a matrix with in rows class intervals of x and in columns class intervals of y. Contingency table is returned if FUN=length

- breaks_x, breaks_y
same as the inputs of the function

- Midpoints.x, Midpoints.y
the midpoints for each bin per variable

- nobs.x , nobs.y
number of observations of x and y

- n.bins
vector of 2 elements containing the number of bins for x and y

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