in lib/analysis.py [0:0]
def calc_cdf_from_density(density, vals):
cdf = []
sum = 0
for i in range(0,len(density)-2):
width = vals[i+1]-vals[i]
cdf_val = sum+density[i]*width
sum = cdf_val
cdf.append(cdf_val)
width = vals[-1]-vals[-2]
cdf_val = sum+density[-1]*width
sum = cdf_val
cdf.append(cdf_val)
return cdf