Drawing a graph with broken y-axis

[Pietair]

Homework Statement

With what program (freeware) can I draw a graph with broken y-axis.

An example of what I want:

I know that this is possible by using Excel, but just in a very cumbersome way, right?

Thanks in advance.

 

[minger]

Maybe you try the steps provided on the web page that you got the image from
http://peltiertech.com/Excel/Charts/BrokenYAxis.html

 

[Pietair]

Thank you for your answer.

Because I have to make quite a lot of graphs with broken y-axis, I am looking for an easier method. The method of the website will take quite some time when I have to make 20 graphs with broken y-axis.