Wrap Gnuplot in lua

#!/usr/bin/env lua

local Gnuplot = { }

function Gnuplot:init()
    self.gp = io.popen("gnuplot", "w")
end


function Gnuplot:write(cmd)
    self.gp:write(cmd, "\n")
    self.gp:flush()
end


function Gnuplot:close()
    self.gp:close()
end

return Gnuplot

#!/usr/bin/env lua

home = os.getenv("HOME")
package.path = string.format("%s/Dropbox/codes/Gnuplot.lua/Gnuplot.lua", home)
gp = require "Gnuplot"

-- Start Gnuplot...
gp:init()

-- Gnuplot commands...
gp:write("plot sin(x)")

-- For display purpose
io.write("Press enter to exit...")
io.read()

-- Close Gnuplot...
gp:close()