I've been asked about the feasibility of generating simple graphs (chart recorder style) with an embedded web-server -- GoAhead web server to be specific.
The only plotting I've ever done programmaticaly was by executing gnuplot under. That's not an option for the embedded platform in question. The plots will have to be generated by C code. One options is to write C code to actually render the graphics and crunch out a GIF or PNG "file". That sounds like a _lot_ of work.
Is there a way to use client-side Javascript to do the actual drawing? I'd rather stay away from serving up a Java applet, but I could probably get away with Javascript.