# lets plot this pixels so we can see the image
fig =plt.figure(1, (14, 14))

k = 0 
for label in sorted(data.emotion.unique()):
    for j in range(7):
        px = data[data.emotion == label].pixels.iloc[k]
        px = np.array(px.split(' ')).reshape(48, 48).astype('float32')
        
        k += 1
        ax = plt.subplot(7,7,k)
        ax.imshow(px,cmap='gray')
        ax.set_xticks([])
        ax.set_yticks([])
        ax.set_title(emotion_label_to_text[label])
        plt.tight_layout()