title: Grid of images in matplotlib with no padding
body: <p>I'm trying to make a grid of images in matplotlib using gridspec. The problem is, I can't seem to get it to get rid of the padding between the rows. </p>
  
  <p><img src="https://i.stack.imgur.com/KOFdT.png" alt="enter image description here"></p>
  
  <p>Here's my attempt at the solution. </p>
  
  <pre><code>import matplotlib.pyplot as plt
  from mpl_toolkits.axes_grid1 import ImageGrid
  import numpy as np
  from os import listdir
  from os import chdir
  from PIL import Image
  import matplotlib.gridspec as gridspec
  
  chdir('/home/matthew/Dropbox/Work/writing/'+
      'paper_preperation/jump_figs')
  files = listdir('/home/matthew/Dropbox/Work/writing/'+
      'paper_preperation/jump_figs')
  
  images = [Image.open(f) for f in files]
  
  
  """
  fig = plt.figure()
  
  grid = ImageGrid(fig, 111, # similar to subplot(111)
                  nrows_ncols = (2, 5), # creates 2x2 grid of axes
                  axes_pad=0.1, # pad between axes in inch.
                  )
  """
  
  num_rows = 2
  num_cols = 5
  
  fig = plt.figure()
  gs = gridspec.GridSpec(num_rows, num_cols, wspace=0.0)
  
  ax = [plt.subplot(gs[i]) for i in range(num_rows*num_cols)]
  gs.update(hspace=0)
  #gs.tight_layout(fig, h_pad=0,w_pad=0)
  
  for i,im in enumerate(images):
      ax[i].imshow(im)
      ax[i].axis('off')
      #ax_grid[i/num_cols,i-(i/num_cols)*num_cols].imshow(im) # The AxesGrid object work as a list of axes.
      #ax_grid[i/num_cols,i-(i/num_cols)*num_cols].axis('off')
  
  """
  all_axes = fig.get_axes()
  for ax in all_axes:
      for sp in ax.spines.values():
          sp.set_visible(False)
      if ax.is_first_row():
          ax.spines['top'].set_visible(True)
      if ax.is_last_row():
          ax.spines['bottom'].set_visible(True)
      if ax.is_first_col():
          ax.spines['left'].set_visible(True)
      if ax.is_last_col():
          ax.spines['right'].set_visible(True)
  """
  plt.show()
  </code></pre>
  
  <p>Also does anyone know how to make each subplot bigger?</p>