VisualizationProject/mergerTreeReader.py at master · subhashis/VisualizationProject · GitHub

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from thingking import loadtxt
import numpy as np
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.mlab as mlab
import matplotlib.pyplot as plt
import matplotlib.colors as colors
import matplotlib.cm as cmx
import time, sys


import vtk
from vtk import *


#prefix = "/home/subhashis/VisData/contestData/2015/rockstar/trees/tree_0_0_0.dat"
#prefix = "/home/subhashis/VisData/merger_trees/tree_0_0_0.dat"
prefix = "/home/subhashis/VisData/merger_trees/test.dat"
# Load the a=1 Rockstar hlist file. The header of the file lists the useful
# units/information.
scale, id, desc_scale, desc_id, num_prog, pid, upid, desc_pid, phantom, \
    sam_mvir, mvir, rvir, rs, vrms, mmp, scale_of_last_MM, vmax, x, y, z, \
    vx, vy, vz, Jx, Jy, Jz, Spin, Breadth_first_ID, Depth_first_ID, \
    Tree_root_ID, Orig_halo_ID, Snap_num, Next_coprogenitor_depthfirst_ID, \
    Last_progenitor_depthfirst_ID, Rs_Klypin, M_all, M200b, M200c, M500c, \
    M2500c, Xoff, Voff, Spin_Bullock, b_to_a, c_to_a, A_x, A_y, A_z, \
    b_to_a_500c, c_to_a_500c, A_x_500c, A_y_500c, A_z_500c, T_over_U, \
    M_pe_Behroozi, M_pe_Diemer = \
    loadtxt(prefix, skiprows=0, unpack=True)

print len(id)
print max(pid)
print min(pid)
print len(Tree_root_ID)
print max(Tree_root_ID)
print min(Tree_root_ID)
maxMass = max(mvir)

for i in range(0,len(x)):
    if maxMass == mvir[i]:
        print id[i]


#fig = plt.figure()
#ax = fig.gca(projection='3d')
#numPoints = len(x)
#for i in range(0,numPoints-1):
#    ax.plot([x[i],x[i+1]],[y[i],y[i+1]],[z[i],z[i+1]],'r-',lw=1.5)
#ax.set_xlim3d(0,70)
#ax.set_ylim3d(0,70)
#ax.set_zlim3d(0,70)
#plt.show()


Points = vtk.vtkPoints()
id_array = vtk.vtkIntArray()
#id_array.SetNumberofComponents(1)
id_array.SetName("haloid")

mvir_array = vtk.vtkDoubleArray()
mvir_array.SetName("mvir")

rvir_array = vtk.vtkDoubleArray()
rvir_array.SetName("rvir")

pid_array = vtk.vtkIntArray()
pid_array.SetName("pid")

velocity_array = vtk.vtkDoubleArray()
velocity_array.SetNumberOfComponents(3)
velocity_array.SetName("v")

snapID_array = vtk.vtkIntArray()
snapID_array.SetName("Snap_num")

ba_array = vtk.vtkDoubleArray()
ba_array.SetName("ba")

ca_array = vtk.vtkDoubleArray()
ca_array.SetName("ca")

axis_array = vtk.vtkDoubleArray()
axis_array.SetNumberOfComponents(3)
axis_array.SetName("Axis")

for i in range(0,len(x)):
    Points.InsertNextPoint(x[i],y[i],z[i])
    id_array.InsertNextTuple1(id[i])
    pid_array.InsertNextTuple1(pid[i])
    mvir_array.InsertNextTuple1(mvir[i])
    rvir_array.InsertNextTuple1(rvir[i]/1000)
    snapID_array.InsertNextTuple1(Snap_num[i])
    ba_array.InsertNextTuple1(b_to_a[i])
    ca_array.InsertNextTuple1(c_to_a[i])
    #velo = [vx[i],vy[i],vz[i]]
    velocity_array.InsertNextTuple3(vx[i],vy[i],vz[i])
    axis_array.InsertNextTuple3(A_x[i],A_y[i],A_z[i])


#draw_3d_lines(x,y,z)

#for i in range(0,len(x)):
#    if id[i] == 679582:
#        Points.InsertNextPoint(x[i],y[i],z[i])
#    elif pid[i] == 679582:
#        Points.InsertNextPoint(x[i],y[i],z[i])
#    else:
#        ran=2

polydata = vtk.vtkPolyData()
polydata.SetPoints(Points)
polydata.GetPointData().AddArray(id_array)
polydata.GetPointData().AddArray(pid_array)
polydata.GetPointData().AddArray(mvir_array)
polydata.GetPointData().AddArray(rvir_array)
polydata.GetPointData().AddArray(snapID_array)
polydata.GetPointData().AddArray(ba_array)
polydata.GetPointData().AddArray(ca_array)
#polydata.GetPointData().SetScalars(hostHaloId)
polydata.GetPointData().AddArray(velocity_array)
polydata.GetPointData().SetVectors(velocity_array)
polydata.GetPointData().AddArray(axis_array)

if vtk.VTK_MAJOR_VERSION <= 5:
    polydata.Update()

#outputFile = "/home/subhashis/HaloTS_" + str(timeslice) + ".vtp"
outputFile = "/home/subhashis/VisData/merger_trees/firsttree1.vtp"

writer = vtk.vtkXMLPolyDataWriter();
writer.SetFileName(outputFile);
if vtk.VTK_MAJOR_VERSION <= 5:
    writer.SetInput(polydata)
else:
    writer.SetInputData(polydata)
writer.Write()