how to write text on y axis both side as shown in fig?

in single figure both side on y axis how to write?

Answer 1

[Selva Karna]

if you are plot some data's;

x=1:pi:20; y=sin(x); plot(y,'-*g'); xlabel('time in s'); ylabel('frequency in Hz'); title('your titile'); grid on;

[ajeet verma]

i am saying that both side on y axis, means left and right as written in attached graph