I've been looking around the web for a plotting tool to use w/ my RoR app. I've tried already amCharts and PlotKit, and I know about the existence of XML/SWF, FusionCharts, Gruff, Scruffy, ChartDirector (never tested or tried though). The main problem is to find a good harmony between good user interaction features (ajax, zoom capabilities, many selectable data series in a plot etc) and the ability to deal with a large set of points (25k+). amCharts would be almost perfect, but w/ more than 3k points it gets quite slow. I wanted some tool that when the graph is totally zoomed out, showed only a few points, enough to get an idea, and showed the other points only when it was zoomed in enough. Any clues? I would be willing to go "the proprietary way" if there is a good solution there... =) thanks a lot in advance.
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