jquery, graphing recommendations based on selective conditions

I am looking for something that can do the following:

-can do log scales axes graphing -开发者_如何学编程have the ability to download the points on the graph into csv/excel -looks great visually -possible to do 10-20 plots on graph -create smooth curves if given a set of dots

Are there any items on the web that would perform in what I am looking for?

Flot or Raphael Graphing or perhaps you may have to write your own by hacking one of these to get the functionality you want, especially with the logarithmic scale requirement.

okay, i just ended up building gnuplot server side and add the features myself