function createData()
    file = io.open("data.txt", "w")
    for i=1,10 do
        file:write(i .. " " .. (i * i) .. "\n")
    end
    file:close()
    return
end

function generatePlotScript()
    file = io.open("test.gnuplot", "w")
    file:write([[plot "data.txt" using 1:2 with points, x * x]])
    file:close()
end

function plot()
    os.execute([[cmd /K "C:\Program Files (x86)\gnuplot\bin\gnuplot.exe" test.gnuplot --persist]])
end