How to add string on x-axis and line starting from some point?

Hi guys,

In my figure I want to highlight a value on the x-axis using string and the corrispondent numerical value ("tau_1 = 66") and then I want to draw a line parallel to the vertical axis through that point.

I would like to achieve something like in the figures below:

Can you help me?

Answer 1

[KSSV]

You can show up the string using text. Read about this function.

You can draw line using plot.

[Giuseppe]

Is possible with text to add string outsides figure box as represented in my image example?

[KSSV]

Yes it is....

plot(rand(1,10))
text(2.5,0.0,'You see I am here')