range(vmin, vmax, step)

    Creates a range of numbers that include the extreme values.

    Parameters
    ----------
    vmin: int or float
        First value of sequence of numbers.

    vmax: int or float
        Last value of sequence of numbers.

    step: int or float
        Step used to create sequence of numbers between vmin and vmax.



    Returns
    -------
    Return a numpy.ndarray with range of number between vmin and vmax.

creates_palette(Palette_Attr, extend='neither', lower_color=None, upper_color=None, nan_color=None)

    Creates a custom color palette from color list.

    Parameters
    ----------
    Palette_Attr : list
        List that contains sublists with the characteristics of the
        colors that will be used to create a custom color palette.
        Each sublist must has three elements: [Colors, Limits, Stretch]

        Colors : list or Matplotlib's Colormap
            Defines the colors that will be used to create the
            palette. Colors must be a Matplotlib's Colormap,
            a list with Matplotlib's colors name,
            a list with Hex color code or
            a list with RGB color code.

        Limits : list or numpy.ndarray
            Defines the limits of each color of palette.

        Stretch : list, optional
            Optional list used to stretch the color palette
            in order to obtain colors from a specific region.
            Stretch must have 3 elements: [Values, Vini, Vfin]

            Values : list or numpy.ndarray
                Sequence of numbers that will be cut.

            Vini : int or float
                First value used to cut Values.

            Vfin : int or float
                Last value used to cut Values.

            If Stretch is defined, the number of colors between
            Vini and Vfin must be equal to Colors.


    extend : str, default 'neither'
        It is an optional parameter that is used to sets the extreme color of
        palette. The valid options are 'neither', 'min', 'max', and
        'both'.


    lower_color : str, tuple, or None, default None
        It defines lower color of palette.


    upper_color : str, tuple, or None, default None
        It defines upper color of palette.


    nan_color : str, tuple, or None, default None
        It defines color of nan values.



    Returns
    -------
    Palette: object
        Custom color palette

    Ticks: list
        Limits of each color in the palette.

    Norm: class matplotlib.colors.BoundaryNorm
        Norm of limits of each color.

    Bounds: list
        List with limits of each colors of Palette, including the extend values.