yline

Add one or more horizontal lines in the current axes or specified axes.

Syntax

h = yline(y)

h = yline(..., property, value, ...)

h = yline(hAxes, ...)

Inputs

y
Constant point y of the horizontal line.
Type: double | integer
Dimension: scalar | vector
property
Properties that control the appearance or behavior of the graphics object.
Type: string
Dimension: scalar
value
Value of the properties.
Type: double | integer | string
Dimension: scalar | vector
hAxes
Axis handle.
Type: double
Dimension: scalar

Outputs

h
Handle of the line graphics object.

Examples

Simple yline example: 
clf;
h = yline(2);
Figure 1. Horizontal line at y = 2
Create horizontal lines and set properties example: 
clf;
x=[0:0.1:3*pi];
plot(x, sin(x)); 
h = yline([-1;1],'color','r','linestyle','--');
ylim([-1.5 1.5])
Figure 2. Create 2 lines and set properties

Comments

If there is no axis, one is created first. If y is an Mx1 matrix, then M horizontal lines are created.

If an axis exists, lines are added to it without clearing existing lines.