generate plot image from data

plot.py

import numpy as np
import matplotlib.pyplot as plt
import sys

argvs = sys.argv
argc = len(argvs)
if(argc != 3):
    print 'Usage : ./%s (input_filename) (output_image)' % (argvs[0])
    quit()

targetfile = argvs[1]
outimage = argvs[2]
data = np.loadtxt(targetfile, skiprows=3)

t = data[:,0]
i = data[:,1]
v = data[:,2]

plt.subplot(211)
#plt.rcParams['font.size'] = 15
plt.xlabel("t [msec]")
plt.ylabel("Injected Current [uA]")
plt.ylim([-1.0,2.0])
plt.plot(t, i)

plt.subplot(212)
plt.xlabel("t [msec]")
plt.ylabel("Membrane Potential [mV]")
plt.ylim([-70,0])
plt.plot(t, v)
plt.savefig(outimage)