In [2]:

    

import numpy


    

In [3]:

    

a = numpy.zeros([3,2])


    

In [4]:

    

print(a)


    

    




[[ 0.  0.]
 [ 0.  0.]
 [ 0.  0.]]

In [5]:

    

a[0,0] = 1
a[0,1] = 2
a[1,0] = 3
a[2,1] = 1


    

In [6]:

    

print(a)


    

    




[[ 1.  2.]
 [ 3.  0.]
 [ 0.  1.]]

In [11]:

    

import matplotlib.pyplot
%matplotlib inline


    

In [9]:

    

matplotlib.pyplot.imshow(a, interpolation="nearest")


    

    
Out[9]:





<matplotlib.image.AxesImage at 0x7fa0628bc470>