#Libraries to manage different elements
#--------------------------------------
from matplotlib import pyplot as pl
import numpy as np
#from matplotlib import rcParams
#from matplotlib import gridspec
##import matplotlib.ticker as ticker
#-------------------------------------

#Read the files two columns from a file
#---------------------------------------
ir1 = np.loadtxt('first_ir.dat', delimiter=" ")
ir2 = np.loadtxt('second_ir.dat', delimiter=" ")
#---------------------------------------

#Plot Figure
#----------------------------------
fig = pl.figure(1)
ax1=pl.subplot()
ax1.plot(ir1[:,0], ir1[:,1], label='First IR', lw='0.8', color='red')
ax1.plot(ir2[:,0], ir2[:,1], label='Second', lw='1.5', color='blue')

#General plot elements
#-------------------------------------
pl.xlabel(r'Frequency [cm]$^{-1}$', x=0.5, y=0)    #X label
pl.ylabel("Absorbance arb. unit.", x=0.0, y=0.5) #Y label 
pl.legend(loc=1, bbox_to_anchor=(0.30, 0.95),prop={'size':10}) 

#Intructions for the exit format: png, eps, ps, svg
#---------------------------------------------------
pl.savefig('ir_lines.png',format='png', dpi=400)

pl.show()