plot.py

#!/usr/bin/env python2                                                                                                                     
# -*- coding: utf-8 -*-                                                                                                                    
import matplotlib
matplotlib.use("Agg")
from pylab import *
import numpy
# tex stuff                                                                                                                                
#rc('font',**{'family':'serif','serif':['Palatino']})                                                                                      
params = {'axes.labelsize': 16,
          'axes.titlesize': 20,
          'text.fontsize': 14,
          'legend.fontsize': 14,
          'xtick.labelsize': 14,
          'ytick.labelsize': 14,
          'text.usetex': True,

          'figure.figsize' : (12,9),
          'figure.subplot.left'    : 0.07,  # the left side of the subplots of the figure                                                  
          'figure.subplot.right'   : 0.98  ,  # the right side of the subplots of the figure                                               
          'figure.subplot.bottom'  : 0.09  ,  # the bottom of the subplots of the figure                                                   
          'figure.subplot.top'     : 0.9  ,  # the top of the subplots of the figure                                                       
          'figure.subplot.wspace'  : 0.26  ,  # the amount of width reserved for blank space between subplots                              
          'figure.subplot.hspace'  : 0.22  ,  # the amount of height reserved for white space between subplots                             

          'lines.markersize' : 6,
          'lines.linewidth' : 2,

#          'axes.formatter.limits' : (-2, 1),                                                                                              

          'text.latex.unicode': True
        }
rcParams.update(params)
rc('font', family='serif')
import sys
import os

# Read Quickshed accelerations
data=loadtxt("particle_dump.dat")
id = data[:,0]
accx_e=data[:,4]
accy_e=data[:,5]
accz_e=data[:,6]

accx_bh=data[:,7]
accy_bh=data[:,8]
accz_bh=data[:,9]

accx_new=data[:,10]
accy_new=data[:,11]
accz_new=data[:,12]

# Sort accelerations
rank = argsort(id)
id = id[rank]
accx_e = accx_e[rank]
accy_e = accy_e[rank]
accz_e = accz_e[rank]

accx_bh = accx_bh[rank]
accy_bh = accy_bh[rank]
accz_bh = accz_bh[rank]

accx_new = accx_new[rank]
accy_new = accy_new[rank]
accz_new = accz_new[rank]


# Read Gadget accelerations
data=loadtxt("particle_dump_gadget.dat")
id = data[:,0]
accx_g=data[:,4]
accy_g=data[:,5]
accz_g=data[:,6]

# Sort accelerations
rank = argsort(id)
id = id[rank]
accx_g = accx_g[rank]
accy_g = accy_g[rank]
accz_g = accz_g[rank]

# Build error ------------------------------------------------

errx_bh = (accx_bh - accx_e )/abs(accx_e) 
erry_bh = (accy_bh - accy_e )/abs(accy_e) 
errz_bh = (accz_bh - accz_e )/abs(accz_e) 

errx_new = (accx_new - accx_e )/abs(accx_e) 
erry_new = (accy_new - accy_e )/abs(accy_e) 
errz_new = (accz_new - accz_e )/abs(accz_e) 

errx_g = (accx_g - accx_e )/abs(accx_e) 
erry_g = (accy_g - accy_e )/abs(accy_e) 
errz_g = (accz_g - accz_e )/abs(accz_e) 


# Statistics
meanx_bh = mean(errx_bh)
stdx_bh = sqrt(mean(errx_bh**2) - meanx_bh**2)
meany_bh = mean(erry_bh)
stdy_bh = std(erry_bh)
meanz_bh = mean(errz_bh)
stdz_bh = std(errz_bh)

meanx_new = mean(errx_new)
stdx_new = std(errx_new)
meany_new = mean(erry_new)
stdy_new = std(erry_new)
meanz_new = mean(errz_new)
stdz_new = std(errz_new)

meanx_g = mean(errx_g)
stdx_g = std(errx_g)
meany_g = mean(erry_g)
stdy_g = std(erry_g)
meanz_g = mean(errz_g)
stdz_g = std(errz_g)

# Plot -------------------------------------------------------
figure(frameon=True)

subplot(311, title="Acceleration along X")
plot(id, errx_g , 'gs')
plot(id, errx_bh , 'rx')
plot(id, errx_new , 'b.')

text(id[-1], 0.18, "Gadget: $%5.3f\\pm%5.3f$ \n B-H: $%5.3f\\pm%5.3f$\n QuickShed: $%5.3f\\pm%5.3f$"%(meanx_g, stdx_g, meanx_bh, stdx_bh, meanx_new, stdx_new), backgroundcolor="w", va="top", ha="right" )


ylim(-0.2, 0.2)
xlim(0,id[-1])
grid()

subplot(312, title="Acceleration along Y")
plot(id, erry_g , 'gs')
plot(id, erry_bh , 'rx')
plot(id, erry_new , 'b.')
text(id[-1], 0.18, "Gadget: $%5.3f\\pm%5.3f$ \n B-H: $%5.3f\\pm%5.3f$\n QuickShed: $%5.3f\\pm%5.3f$"%(meany_g, stdy_g, meany_bh, stdy_bh, meany_new, stdy_new), backgroundcolor="w", va="top", ha="right" )

ylim(-0.2, 0.2)
xlim(0,id[-1])

grid()

subplot(313, title="Acceleration along Z")
plot(id, errz_g , 'gs')
plot(id, errz_bh , 'rx')
plot(id, errz_new , 'b.')
text(id[-1], 0.18, "Gadget: $%5.3f\\pm%5.3f$ \n B-H: $%5.3f\\pm%5.3f$\n QuickShed: $%5.3f\\pm%5.3f$"%(meany_g, stdy_g, meany_bh, stdy_bh, meany_new, stdy_new), backgroundcolor="w", va="top", ha="right" )

ylim(-0.2, 0.2)
xlim(0,id[-1])
grid()

savefig("accelerations.png")




# Plot -------------------------------------------------------
bins = linspace(-3, 3, 10000)


figure(frameon=True)
subplot(311, title="Acceleration along X")
hist(errx_g, bins=bins, normed=1, histtype='step', rwidth=0.01, color='g')
hist(errx_bh, bins=bins, normed=1, histtype='step', rwidth=0.01, color='r')
hist(errx_new, bins=bins, normed=1, histtype='step', rwidth=0.01, color='b')
xlim(-0.03, 0.03)

subplot(312, title="Acceleration along Y")
hist(erry_g, bins=bins, normed=1, histtype='step', rwidth=0.01, color='g')
hist(erry_bh, bins=bins, normed=1, histtype='step', rwidth=0.01, color='r')
hist(erry_new, bins=bins, normed=1, histtype='step', rwidth=0.01, color='b')
xlim(-0.03, 0.03)

subplot(313, title="Acceleration along Z")
hist(errz_g, bins=bins, normed=1, histtype='step', rwidth=0.01, color='g')
hist(errz_bh, bins=bins, normed=1, histtype='step', rwidth=0.01, color='r')
hist(errz_new, bins=bins, normed=1, histtype='step', rwidth=0.01, color='b')
xlim(-0.03, 0.03)

savefig("histogram.png")