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I am developing an Asp.net site where I need to upload files (.mat), and receive values in a list to plot line charts, with many points (about 200,000 points) on a single page. The issue of graphic plotting can be solved using Microsoft’s Chart Control, but it takes a long time (about 30 seconds), which should not happen in the system I’m developing. Is there any other tool or library I can use that allows me to plot graphics quickly? I had thought about the possibility of plotting the chart at the time I upload the file, and somehow saving the plotted chart as file on the server, and at the time I need to display the chart just open this file, but I have no idea how to do that. Is there any way to save a chart as a file to the server? Preferably, I want to use free tools and libraries.
Thank you