plot-columns.py

#!/usr/bin/env python

import matplotlib as plt
import pandas as pd
import sys
import os

outname = "/tmp/plot-columns-{}.png".format(os.getpid())
infile  = None

if len(sys.argv) > 1:
    infile = sys.argv[1]
else:
    infile = sys.stdin

# TODO: This only allows for up to 2 columns...

d = pd.read_csv(infile, header=None)
p = d.plot(linewidth=3,secondary_y=d.columns.values[1:], figsize=(25,8))
f = p.get_figure()

f.savefig(outname)

print outname