Hello Physics Forum Members, This is my first post. I am an executive who needs help with something that will likely be a very simple matter to the majority of you and I simply didn't trust a resource like Yahoo! Answers. My challenge is to come up with a pricing plan for a new product. However, price is determined by several factors and I need to know how to calculate and display the price in a simplistic way. Factors that determine price: Hospital bed size Admissions Rate Total Number of Active Nurses and Doctors The idea hit me on the way to work this morning that this chart looks very similar to the pantyhose sizing chart (yes I'm a woman). It's not linear. There's overlapping and different combinations produce different prices. http://kneesntoes.com/skin/frontend/default/modern/images/catalog/product/melas-pantyhose-size-chart.jpg [Broken] Is there a specific name for this type of chart? Is there an open-source application that would allow me to plug in the data and create the chart? Sorry for such a mundane posting, but I would really appreciate the power of the collective genius found in a forum like this to assist me with this challenge.