How can I change my plot shape/representation ?

After doing a thresholding for a certain signal I reached the first(top) plot which I need to change to the following three as shown:

http://i39.tinypic.com/qx742a.jpg

the question is what do I have to change in my code so that every time the first signal change I cane get the other three shapes.

can I use interpolation ?

[K E]

I am having trouble understanding what you want to do and plot. Can you please give some more details or edit your question?

Answer 1

[Shamooooot]

can I use interpolation ?