title: How to make several plots on a single page using matplotlib?
body: <p>I have written code that opens 16 figures at once.  Currently, they all open as separate graphs.  I'd like them to open all on the same page.  Not the same graph. I want 16 separate graphs on a single page/window.  Furthermore, for some reason, the format of the numbins and defaultreallimits doesn't hold past figure 1.  Do I need to use the subplot command?  I don't understand why I would have to but can't figure out what else I would do?</p>
  <pre><code>import csv
  import scipy.stats
  import numpy
  import matplotlib.pyplot as plt
  
  for i in range(16):
      plt.figure(i)
      filename= easygui.fileopenbox(msg='Pdf distance 90m contour', title='select file', filetypes=['*.csv'], default='X:\\herring_schools\\')
      alt_file=open(filename)    
      a=[]
      for row in csv.DictReader(alt_file):
          a.append(row['Dist_90m(nmi)'])
      y= numpy.array(a, float)    
      relpdf=scipy.stats.relfreq(y, numbins=7, defaultreallimits=(-10,60))
      bins = numpy.arange(-10,60,10)
      print numpy.sum(relpdf[0])
      print bins
      patches=plt.bar(bins,relpdf[0], width=10, facecolor='black')
      titlename= easygui.enterbox(msg='write graph title', title='', default='', strip=True, image=None, root=None)
      plt.title(titlename)
      plt.ylabel('Probability Density Function')
      plt.xlabel('Distance from 90m Contour Line(nm)')
      plt.ylim([0,1])
  
  plt.show()
  </code></pre>