publiplots.invert_axis

publiplots.invert_axis(ax, axis='y')[source]

Invert an axis direction.

Useful for heatmaps or other visualisations where reversed order is more intuitive (e.g., placing the origin at the top-left).

Parameters:

  • ax (matplotlib.axes.Axes) – Axes to modify in place.

  • axis ({‘x’, ‘y’}, default 'y') – Which axis to invert.

Raises:

ValueError – If axis is not 'x' or 'y'.

Examples

Invert y-axis (common for heatmaps):

>>> pp.invert_axis(ax, axis='y')

Invert x-axis:

>>> pp.invert_axis(ax, axis='x')