cumulative distribution plots python

Question

I am doing a project using python where I have two arrays of data. Let\'s call them pc and pnc. I am required to plot a cumulative distribution of both of

Answer 1

In order to add my own contribution to the community, here I share my function for plotting histograms. This is how I understood the question, plotting the histogram and the cumulative histograme at the same time :

def hist(data, bins, title, labels, range = None):
  fig = plt.figure(figsize=(15, 8))
  ax = plt.axes()
  plt.ylabel("Proportion")
  values, base, _ = plt.hist( data  , bins = bins, normed=True, alpha = 0.5, color = "green", range = range, label = "Histogram")
  ax_bis = ax.twinx()
  values = np.append(values,0)
  ax_bis.plot( base, np.cumsum(values)/ np.cumsum(values)[-1], color='darkorange', marker='o', linestyle='-', markersize = 1, label = "Cumulative Histogram" )
  plt.xlabel(labels)
  plt.ylabel("Proportion")
  plt.title(title)
  ax_bis.legend();
  ax.legend();
  plt.show()
  return

if anyone wonders how it looks like, please take a look (with seaborn activated):

Also, concerning the double grid (the white lines), I always used to struggle to have nice double grid. Here is an interesting way to circumvent the problem: How to put grid lines from the secondary axis behind the primary plot?