python - Show absolute value in binomial graph -


recombining binomial price lattice

binomial price lattice

hi, want show absolute values (numbers) in each node of graph. have tried plot values each node there errors occurred. can 1 me tackle problem. appreciate help. forward kind help.

from math import * import pylab z; import numpy np;  def pricemovements(s0, down, up, totalsteps, upsteps):     s = s0*(pow(up, upsteps))*(pow(down, totalsteps-upsteps))     return s  def binomial(d, u, p):     g = np.random.binomial(1,p)      if g == 1:         return u     else:         return d  #use following numbers console setting binomial graph  nodes = 8 #nodes s = 1080.0 #initial spot price u = 1.1346 #up factor d = 0.8814 #down factor p = 0.7844 # probability r = 1.08 #1+interest rate n = 3 #steps  numberofpaths = 2**nodes valuelist = [] #emptylist z.figure(0) #generating figure temp = s #temporary variable  in range(0, numberofpaths, 1):     valuelist =[]     s = temp;     c in range(0, nodes + 1, 1):         valuelist.append(s)         s = s*binomial(d, u, p)     z.plot(range(0, nodes + 1, 1), valuelist)  z.title("price movements") z.xlabel("nodes") z.ylabel("s(n)") z.show()

use text :

# after z.plot(range(0, nodes + 1, 1), valuelist) in range(nodes):     z.text(i+.2,valuelist[i]-25,'{:4.1f}'.format(valuelist[i]))

for

enter image description here

just tune offsets best apparence.


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