Method bar

pandas/io/formats/style.py:3414–3539

Draw bar chart in the cell backgrounds. Parameters ---------- subset : label, array-like, IndexSlice, optional A valid 2d input to `DataFrame.loc[<subset>]`, or, in the case of a 1d input or single key, to `DataFrame.loc[:, <subset>]` where t

(
        self,
        subset: Subset | None = None,
        axis: Axis | None = 0,
        *,
        color: str | list | tuple | None = None,
        cmap: Any | None = None,
        width: float = 100,
        height: float = 100,
        align: str | float | Callable = "mid",
        vmin: float | None = None,
        vmax: float | None = None,
        props: str = "width: 10em;",
    )

        return self.map(lambda x: values, subset=subset)

    def bar(
        self,
        subset: Subset | None = None,
        axis: Axis | None = 0,
        *,
        color: str | list | tuple | None = None,
        cmap: Any | None = None,
        width: float = 100,
        height: float = 100,
        align: str | float | Callable = "mid",
        vmin: float | None = None,
        vmax: float | None = None,
        props: str = "width: 10em;",
    ) -> Styler:
        """
        Draw bar chart in the cell backgrounds.

        Parameters
        ----------
        subset : label, array-like, IndexSlice, optional
            A valid 2d input to `DataFrame.loc[<subset>]`, or, in the case of a 1d input
            or single key, to `DataFrame.loc[:, <subset>]` where the columns are
            prioritised, to limit ``data`` to *before* applying the function.
        axis : {0 or 'index', 1 or 'columns', None}, default 0
            Apply to each column (``axis=0`` or ``'index'``), to each row
            (``axis=1`` or ``'columns'``), or to the entire DataFrame at once
            with ``axis=None``.
        color : str or 2-tuple/list
            If a str is passed, the color is the same for both
            negative and positive numbers. If 2-tuple/list is used, the
            first element is the color_negative and the second is the
            color_positive (eg: ['#d65f5f', '#5fba7d']).
        cmap : str, matplotlib.cm.ColorMap
            A string name of a matplotlib Colormap, or a Colormap object. Cannot be
            used together with ``color``.
        width : float, default 100
            The percentage of the cell, measured from the left, in which to draw the
            bars, in [0, 100].
        height : float, default 100
            The percentage height of the bar in the cell, centrally aligned, in [0,100].
        align : str, int, float, callable, default 'mid'
            How to align the bars within the cells relative to a width adjusted center.
            If string must be one of:

            - 'left' : bars are drawn rightwards from the minimum data value.
            - 'right' : bars are drawn leftwards from the maximum data value.
            - 'zero' : a value of zero is located at the center of the cell.
            - 'mid' : a value of (max-min)/2 is located at the center of the cell,
              or if all values are negative (positive) the zero is
              aligned at the right (left) of the cell.
            - 'mean' : the mean value of the data is located at the center of the cell.

            If a float or integer is given this will indicate the center of the cell.

            If a callable should take a 1d or 2d array and return a scalar.

        vmin : float, optional
            Minimum bar value, defining the left hand limit