anyplotlib.HLineWidget#

class anyplotlib.HLineWidget(push_fn, *, y, color='#00e5ff', linewidth=2, snap_values=None)[source]#

Bases: Widget

Draggable horizontal line overlay widget for bar charts.

Allows interactive selection of a single y-axis value. The line can be dragged up/down to change the selected value.

Parameters:

  • push_fn (Callable) – Update callback.

  • y (float) – Initial y-position in data coordinates.

  • color (str, optional) – CSS colour for the line. Default "#00e5ff".

  • linewidth (float, optional) – Line stroke width in px. Default 2.