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?

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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.

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