Cycle(*args, N=None, samples=None, name=None, marker=None, alpha=None, dashes=None, linestyle=None, linewidth=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, **kwargs)[source]

Generate and merge Cycler instances in a variety of ways. Used to interpret the cycle and cycle_kw arguments when passed to any plotting method wrapped by cycle_changer.

If you just want a list of colors instead of a Cycler instance, use the Colors function. If you want a Cycler instance that imposes black as the default color and cycles through properties like linestyle instead, call this function without any positional arguments.

  • *args (colormap-spec or cycle-spec, optional) – Positional arguments control the colors in the Cycler object. If more than one argument is passed, the resulting cycles are merged. Arguments are interpreted as follows:

    • If a Cycler, nothing more is done.

    • If a list of RGB tuples or color strings, these colors are used.

    • If a ListedColormap, colors from the colors attribute are used.

    • If a string cycle name, that ListedColormap is looked up and its colors attribute is used.

    • In all other cases, the argument is passed to Colormap, and colors from the resulting LinearSegmentedColormap are used. See the samples argument.

    If the last positional argument is numeric, it is used for the samples keyword argument.

  • N, samples (float or list of float, optional) – For ListedColormaps, this is the number of colors to select. For example, Cycle('538', 4) returns the first 4 colors of the '538' color cycle.

    For LinearSegmentedColormaps, this is the a list of sample coordinates used to draw colors from the map, or an integer number of colors to draw. If the latter, the sample coordinates are np.linspace(0, 1, samples). For example, Cycle('Reds', 5) divides the 'Reds' colormap into five evenly spaced colors.

  • marker, alpha, dashes, linestyle, linewidth, markersize, markeredgewidth, markeredgecolor, markerfacecolor (list of specs, optional) – Lists of Line2D properties that can be added to the Cycler instance. If the lists have unequal length, they will be filled to match the length of the longest list. See set_prop_cycle for more info on cyclers. Also see the line style reference, the marker reference, and the custom dashes reference.

Other Parameters

**kwargs – If the input is not already a Cycler instance, these are passed to Colormap and used to build the ListedColormap from which the cycler will draw its colors.


Cycler – A cycler instance that can be passed to set_prop_cycle.