Plotting straight line on graph

Hey easy question but how do i plot the line y=40 in matlab? What is the script i need to write?

Thanks zane :)

Answer 1

[Simon]

yline(40)

[Dyuman Joshi]

Note that yline is available from R2018b onwards.

In case of an older version, use the method described in the other answer.

Answer 2

[Walter Roberson]

plot([first_x last_x], 40)

[Simon]

this does not work

[Matt J]

plot([first_x last_x], [40,40])

Answer 3

[Vedangi Gholap]

plot([0 3], [40,40])