online graphing app -PROVIDING SAMPLES NECESSARY

YOU MUST PROVIDE SAMPLES OF THE TYPES OF GRAPHS YOUR APP WILL DO. I have files on my server and I want to be able to generate graphs from them. Scripts generate new files and then I want to graph them. The program should allow the user to choose a file and then create a graph. The graphs should be nice and should allow for the user to visualize different variables and multiple views. Please send me examples of the type of graphs you can generate with your program. The server is Windows 2008. PHP, Mysql, perl are installed on the computer YOU MUST PROVIDE SAMPLES OF THE TYPES OF GRAPHS YOUR APP WILL DO.