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N_body_plots.py
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import matplotlib.pyplot as plt
import N_body_parameters as param
import N_body_data_collection as data
def energy_vs_time():
#------K+U+E graph
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
initial_energy=data.total_energy[0]
energy_deviation= [abs((energy-initial_energy)/initial_energy) for energy in data.total_energy]
plt.plot(data.times,data.kinetic_energy,'r', label='$K$')
plt.plot(data.times,data.potential_energy,'b', label='$U$')
plt.plot(data.times,data.total_energy,'k', label='$E_{tot}$')
if param.lang=="French":
plt.title('Energie vs temps')
else:
plt.title('Energy vs time')
plt.xlabel('simtime',fontsize=18)
if param.lang=="French":
plt.ylabel('Energie ',fontsize=18)
else:
plt.ylabel('Energy ',fontsize=18)
plt.legend()
plt.show()
#-------(delta E)/E graph
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,energy_deviation,'k')
if param.lang=="French":
plt.title("Variation d'energie vs temps")
plt.title('Energy change vs time')
plt.xlabel('simtime',fontsize=18)
plt.ylabel('$ | \Delta E/E_0 |$',fontsize=18)
plt.legend()
plt.show()
#------virial ratio
virial_ratio= [data.kinetic_energy[k]/(-data.potential_energy[k]) for k in range (len(data.potential_energy))]
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,virial_ratio,'k')
if param.lang=="French":
plt.title('Rapport du viriel vs temps')
plt.title('Virial ratio vs time')
plt.xlabel('simtime',fontsize=18)
plt.ylabel('$-K/U$',fontsize=18)
plt.legend()
plt.show()
def N_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,data.particle_number,'k')
if param.lang=="French":
plt.title('Nb de particles vs time')
plt.title('Particle number vs time')
plt.xlabel('simtime',fontsize=18)
plt.ylabel('N',fontsize=18)
plt.legend()
plt.show()
def computation_speed_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times[1:],data.speed[1:],'k')
if param.lang=="French":
plt.title('Taux de calcul vs temps')
else:
plt.title('Computation speed vs time')
plt.xlabel('simtime',fontsize=18)
plt.ylabel('runtime/simtime',fontsize=18)
plt.legend()
plt.show()
def force_calculations_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,data.force_calculations,'k')
if param.lang=="French":
plt.title('Nb de caluls de force par pas')
else:
plt.title('Number of force calculations per step')
plt.xlabel('simtime',fontsize=18)
if param.lang=="French":
plt.ylabel('Nb de calculs de force',fontsize=18)
else:
plt.ylabel('Number of force calculations',fontsize=18)
plt.legend()
plt.show()
def num_binaries_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,data.num_binaries,'k')
if param.lang=="French":
plt.title('Nb de binaires vs temps')
else:
plt.title('Number of binaries per time')
plt.xlabel('simtime',fontsize=18)
if param.lang=="French":
plt.ylabel('Nb de binaires',fontsize=18)
else:
plt.ylabel('Number of binaries',fontsize=18)
plt.legend()
plt.show()
def central_density_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,data.central_density,'k')
if param.lang=="French":
plt.title('Densite centrale vs temps')
else:
plt.title('Central density per time')
plt.xlabel('simtime',fontsize=18)
if param.lang=="French":
plt.ylabel('N_core/N_0',fontsize=18)
else:
plt.ylabel('Central density',fontsize=18)
plt.legend()
plt.show()
def evaporation_ratio_vs_time():
fig=plt.figure()
if param.lang=="French":
fig.text(.80,.93,'lissage: '+param.display_status(param.softening))
else:
fig.text(.80,.93,'softening: '+param.display_status(param.softening))
fig.text(.80,.96,'collisions: '+param.display_status(param.collisions))
plt.plot(data.times,data.evaporation_ratio,'k')
if param.lang=="French":
plt.title("Echelle de temps de l'évaporation")
else:
plt.title('Time scale of escape')
plt.xlabel('simtime',fontsize=18)
plt.ylabel('N/N_0',fontsize=18)
plt.legend()
plt.show()
def BH_vs_DC():
fig=plt.figure()
plt.plot(data.list_n,data.exec_time_DC,'b', label='$DC$')
plt.plot(data.list_n,data.exec_time_BH,'k', label='BH')
if param.lang=="French":
plt.title('Barnes-Hut vs Comparaison Directe')
else:
plt.title('Barnes-Hut vs Direct Comparison')
if param.lang=="French":
plt.xlabel('Nb de particules',fontsize=18)
else:
plt.xlabel('Particle number',fontsize=18)
if param.lang=="French":
plt.ylabel("Temps d'execution",fontsize=18)
else:
plt.ylabel('Execution time',fontsize=18)
plt.legend()
plt.show()