InfiniteLine

class pyqtgraph.InfiniteLine(pos=None, angle=90, pen=None, movable=False, bounds=None, hoverPen=None, label=None, labelOpts=None, name=None)[source]

Bases: GraphicsObject

Displays a line of infinite length. This line may be dragged to indicate a position in data coordinates.

Signals:  
sigDragged(self)  
sigPositionChangeFinished(self)  
sigPositionChanged(self)  
__init__(pos=None, angle=90, pen=None, movable=False, bounds=None, hoverPen=None, label=None, labelOpts=None, name=None)[source]
Arguments:  
pos Position of the line. This can be a QPointF or a single value for vertical/horizontal lines.
angle Angle of line in degrees. 0 is horizontal, 90 is vertical.
pen Pen to use when drawing line. Can be any arguments that are valid for mkPen. Default pen is transparent yellow.
movable If True, the line can be dragged to a new position by the user.
hoverPen Pen to use when drawing line when hovering over it. Can be any arguments that are valid for mkPen. Default pen is red.
bounds Optional [min, max] bounding values. Bounds are only valid if the line is vertical or horizontal.
label Text to be displayed in a label attached to the line, or None to show no label (default is None). May optionally include formatting strings to display the line value.
labelOpts A dict of keyword arguments to use when constructing the text label. See InfLineLabel.
name Name of the item
setAngle(angle)[source]

Takes angle argument in degrees. 0 is horizontal; 90 is vertical.

Note that the use of value() and setValue() changes if the line is not vertical or horizontal.

setBounds(bounds)[source]

Set the (minimum, maximum) allowable values when dragging.

setHoverPen(*args, **kwargs)[source]

Set the pen for drawing the line while the mouse hovers over it. Allowable arguments are any that are valid for mkPen.

If the line is not movable, then hovering is also disabled.

Added in version 0.9.9.

setMovable(m)[source]

Set whether the line is movable by the user.

setPen(*args, **kwargs)[source]

Set the pen for drawing the line. Allowable arguments are any that are valid for mkPen.

setValue(v)[source]

Set the position of the line. If line is horizontal or vertical, v can be a single value. Otherwise, a 2D coordinate must be specified (list, tuple and QPointF are all acceptable).

value()[source]

Return the value of the line. Will be a single number for horizontal and vertical lines, and a list of [x,y] values for diagonal lines.

viewTransformChanged()[source]

Called whenever the transformation matrix of the view has changed. (eg, the view range has changed or the view was resized)