How to scale the axis while ploting some function which changes its size on every iteration?

I have made a program for fem transient analysis for wave propagation. The wave seems to change its size due to time integration method(energy is not conserved). I used 'plot' command with 'drawnow', the axis keep changing size I want to fix y-axis to a scale at-least the maximum value of the wave so that I can see bigger picture of what is going on. I try to use ylim([min max]) but program does not follow this command at all.

Answer 1

[Amit]

Use ylim([min max]) right after plot(x,y). I think you might have put ylim after drawnow, this adjust the y-axis but after plotting it.

[Abdullah]

thank you it fixes it ... so nice of you .. :)