29 Dec '13, 5am

Replot in ruby gnuplot - Ruby Forum

> I need to plot data in real time, reading a file over and over and > update a the screen. How to implement reread and replot? Are you on Windows? Or, which OS? I do something similar as you want to do (on Windows): I write data coming from an ADC to Disk (using a c-programm), update line by line each 1..60 seconds, and I read this file with Ruby and send the data from Ruby to gnuplot, doing 2d-plots, updating the plot each time Ruby reads a new data line. For reading the file I use: file-tail. For "real-time" plotting with gnuplot I took a lot from here and transfered it to Ruby: * http://users.softlab.ece.ntua.gr/~ttsiod/gnuplotSt... * http://www.lysium.de/blog/index.php?/archives/234-... * https://news.ycombinator.com/item?id=3210793 I open a pipe to pgnuplot.exe: @gp = "path_to_pgnuplot.exe" ... @pipe = IO.popen(@gp, "w") sleep 2 @pipe.puts "set xtics\n" @pipe.puts "s...

Full article: https://www.ruby-forum.com/topic/4414727

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