In [11]:

    

%reload_ext autoreload
%autoreload 2
%matplotlib inline

import matplotlib.pyplot as plt
import numpy as np

import sys
sys.path.append('..')

from helper import nn


    

In [12]:

    

X, y = nn.load_data('ex3data1.mat')

print(X.shape)
print(y.shape)


    

    




(5000, 400)
(5000,)

In [13]:

    

pick_one = np.random.randint(0, 5000)
nn.plot_an_image(X[pick_one, :])
print('this should be {}'.format(y[pick_one]))


    

    




this should be 10






    

In [14]:

    

nn.plot_100_image(X)


    

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