Module flavio.plots.colors

Colour schemes for plots and colour utility functions.

Functions

def darken_color(color, amount=0.5)

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def darken_color(color, amount=0.5):
    """
    Darkens the given color by multiplying luminosity by the given amount.
    Input can be matplotlib color string, hex string, or RGB tuple.

    Examples:
    >> lighten_color('g', 0.3)
    >> lighten_color('#F034A3', 0.6)
    >> lighten_color((.3,.55,.1), 0.5)
    """
    import matplotlib.colors as mc
    import colorsys
    try:
        c = mc.cnames[color]
    except:
        c = color
    c = colorsys.rgb_to_hls(*mc.to_rgb(c))
    return colorsys.hls_to_rgb(c[0], amount * c[1], c[2])

Darkens the given color by multiplying luminosity by the given amount. Input can be matplotlib color string, hex string, or RGB tuple.

Examples:

lighten_color('g', 0.3) lighten_color('#F034A3', 0.6) lighten_color((.3,.55,.1), 0.5)

def get_color(col, color)

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def get_color(col, color):
    """Function needed for backwards compatibility with the old "col" argument in
    plt functions. It returns the default color 'C0' if both arguments are None.
    If 'color' is not None, it always uses that. If 'color' is None and 
    'col' is an integer, it returns the corresponding 'CN' color. If 'col' is
    neither None nor integer, an error is raised."""
    if color is None and col is None:
        return 'C0'
    if col is None:
        return color
    if not isinstance(col, int):
        raise ValueError("`col` must be an integer. Consider using `color` instead.")
    return 'C{}'.format(col)

Function needed for backwards compatibility with the old "col" argument in plt functions. It returns the default color 'C0' if both arguments are None. If 'color' is not None, it always uses that. If 'color' is None and 'col' is an integer, it returns the corresponding 'CN' color. If 'col' is neither None nor integer, an error is raised.

def lighten_color(color, amount=0.5)

Expand source code

def lighten_color(color, amount=0.5):
    """
    Lightens the given color by multiplying (1-luminosity) by the given amount.
    Input can be matplotlib color string, hex string, or RGB tuple.

    Examples:
    >> lighten_color('g', 0.3)
    >> lighten_color('#F034A3', 0.6)
    >> lighten_color((.3,.55,.1), 0.5)
    """
    import matplotlib.colors as mc
    import colorsys
    try:
        c = mc.cnames[color]
    except:
        c = color
    c = colorsys.rgb_to_hls(*mc.to_rgb(c))
    return colorsys.hls_to_rgb(c[0], 1 - amount * (1 - c[1]), c[2])

Lightens the given color by multiplying (1-luminosity) by the given amount. Input can be matplotlib color string, hex string, or RGB tuple.

Examples:

lighten_color('g', 0.3) lighten_color('#F034A3', 0.6) lighten_color((.3,.55,.1), 0.5)