I would like to have a step line chart like this one, using D3

I think it is not available in D3. I guess I will have to code it as an add-in.
However I really do not know where to start from, so any help is welcome.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I Found a nice way to do it here