# -*- coding: utf-8 -*-
"""
Created on Mon Aug 11 19:34:50 2014

@author: Anish
"""

# Importing libraries 
import os
os.system('cls')
import numpy as np
import matplotlib.pyplot as plt

N = 100
a =  .5  #scale parameter
nvec = np.linspace(-N+1, N-1, num=N)
y1 = (exp(-(nvec*.01)**2/.01)) 
#clf()
plt.plot(nvec,y1,label="Original")

y1_shift = exp(-((nvec-N/2)*.01)**2/.01 )

plt.plot(nvec,y1_shift,'r',label="Shifted")
plt.xlabel('time')
plt.ylabel('Signal')
legend(bbox_to_anchor=(.5, .9), loc=1, borderaxespad=0.)
#plt.legend("Original","Time Reversed")

Signal Shift: an example

Affect of shifting a signal across the domain

Shifting signals: a simple illustration

Python