Grapher

w, h = term.getSize()
term.setBackgroundColor(colors.blue)
term.clear()
term.setCursorPos(w/2 - 4, 1)
term.write("Grapher")
term.setCursorPos(1, 3)
term.write("y=")
local input = read()
oTemp = fs.open("_runGraph", "w")
oTemp.writeLine("graphtab = {}")
oTemp.writeLine("for x = 1, " .. tostring(w) .. " do")
oTemp.writeLine("  graphtab[x] = " .. tostring(input))
oTemp.writeLine("end")
oTemp.flush()
oTemp.close()
os.loadAPI("_runGraph")
term.setBackgroundColor(colors.black)
term.clear()
for i = 1, #_runGraph.graphtab - 1 do
  paintutils.drawLine(i, h - _runGraph.graphtab[i] + 1, i + 1, h - _runGraph.graphtab[i + 1] + 1, colors.green)
  term.setCursorPos(1, 1)
end
for i, v in pairs(_runGraph.graphtab) do
  paintutils.drawPixel(i, h - v + 1, colors.blue)
  term.setCursorPos(1, 1)
end
shell.run("delete _runGraph")