def getFamilyAttributeSum(center2,r,family,attribute):
"""Integrates attributes of a given family over a given sphere."""
charm.createGroupAttributeSphere('group', 'All', 'position', center2[0], center2[1], center2[2], r)
charm.createGroup_Family('group','group',family)
sum = charm.getAttributeSum('group', family, attribute)
charm.deleteGroup('group')
return sum
def writeGroupAscii(group='All', filename='groupAscii.dat'):
"""Writes out a tipsy-ascii file for the group (filename='groupAscii.dat')."""
numStars = charm.getNumParticles(group,'star')
numGas = charm.getNumParticles(group,'gas')
numDark = charm.getNumParticles(group,'dark')
numTotal = numStars + numGas + numDark
#===========================================================================
# This region outputs the ascii file to be read in by tipsy
#===========================================================================
f = open(filename, 'w') # overwrites pre-existing file
f.write(str(numTotal) + ' ' + str(numGas) + ' ' + str(numStars))
f.write('\n3')
f.write('\n'+ str(charm.getTime())+ '\n')
f.close()
for each in ['star','dark','gas']:charm.createScalarAttribute(each, 'tmpWorking')
def writeAndAppend(attribute):
charm.writeGroupArray('tmpGalBox', attribute, '/tmp/out.tmp')
os.system('tail -n +2 /tmp/out.tmp >> ' + filename)
return
families = ['gas','dark','star']
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('mass')
# Positions
for i in range(0,3):
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
charm.runLocalParticleCodeGroup('tmpGalBox', vectorWriter, ('pos', i))
writeAndAppend('tmpWorking')
# Velocities
for i in range(0,3):
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
charm.runLocalParticleCodeGroup('tmpGalBox', vectorWriter, ('vel', i))
writeAndAppend('tmpWorking')
# Star and dark softening
for each in ['dark', 'star']:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('softening')
# Gas attributes
charm.createGroup_Family('tmpGalBox', 'galBox', 'gas')
for each in ['density','temperature','softening','metals']:
writeAndAppend(each)
#Star stuff
charm.createGroup_Family('tmpGalBox', 'galBox', 'star')
for each in ['metals','formationtime']:
writeAndAppend(each)
#potential
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('potential')
charm.deleteGroup('tmpGalBox')
#print 'num lines in ' + filename + ' should be: ' + str(9*numTotal+3*numGas+2*numStars+3)
return
def getVelCMStars(center2, radius):
"Returns the vector for the center of mass velocity of a group of stars defined by center2 coordinates and a radius."
charm.createGroupAttributeSphere('tmpGal', 'All', 'position', center2[0], center2[1], center2[2], radius) #use cmVelCompare2.py to choose length
charm.createGroup_Family('tmpStarGroup', 'tmpGal', 'star') #select star particles only
massStar = charm.getAttributeSum('tmpGal', 'star', 'mass')
mass = massStar #calculate total mass
vmomentStar = charm.reduceParticle('tmpStarGroup', centMassVelMap, centMassReduce, None)
vmoment = [vmomentStar[0][1],vmomentStar[0][2],vmomentStar[0][3]]
vcm = (vmoment[0]/mass, vmoment[1]/mass, vmoment[2]/mass)
#Clean up
charm.deleteGroup('tmpGal')
charm.deleteGroup('tmpStarGroup')
return vcm #return the COM velocity vector
def markgal(group, max_temp, min_rho) :
"""Mark all the gas particles in group that have temperatures less
than or equal to max_temp and densities greater than or equal to
min_rho. This command can be used to mark those gas particles that
are likely to be in galaxies."""
# check if simulation loaded
if charm.getGroups() == None :
raise StandardError('Simulation not loaded')
# get opposing boundaries from simulation values
max_rho = charm.getAttributeRange('gas', 'density')[1]
min_temp = charm.getAttributeRange('gas', 'temperature')[0]
# play the createGroup shuffle
charm.createGroup_Family('tmp_group_fam', group, 'gas')
charm.createGroup_AttributeRange('tmp_group1', 'tmp_group_fam', 'density',
min_rho, max_rho)
charm.createGroup_AttributeRange('tmp_group2', 'tmp_group1',
'temperature', min_temp, max_temp)
charm.markParticlesGroup('tmp_group2')
# remove the temporary groups to avoid clutter
charm.deleteGroup('tmp_group_fam')
charm.deleteGroup('tmp_group1')
charm.deleteGroup('tmp_group2')
def writeBoxAscii(boxRadius, filename, angMomGroup=None, centerMethod ='pot'):
"""Writes out an tipsy-ascii (filename) representation for a box aligned with the galactic coordinate system spanning +-boxRadius (given in kpc) in the galcoord directions. center can be 'pot' or 'com'. Default angMomGroup is cold galactic gas."""
if (angMomGroup==None):
angMomGroup = 'angMomGroup'
center = findcenter.findCenter(method=centerMethod)
virialRadius = virialgroup.getVirialGroup()
charm.createGroupAttributeSphere('angMomGroup', 'All', 'position', center[0], center[1], center[2], virialRadius*quesoConfig.rgalFraction)
charm.createGroup_Family('angMomGroup', 'angMomGroup', 'gas')
charm.createGroup_AttributeRange('angMomGroup', 'angMomGroup', 'temperature', 0, quesoConfig.coldGasTemp)
else:
center = findcenter.findCenter(group2=angMomGroup,method=center)
boxRad1 = boxRadius/(charm.getTime()*quesoConfig.kpcunit)
print 'here'
galcoord.calcGalacticCoordinates(angMomGroup=angMomGroup, center=centerMethod)
galZ = vectormath.normalizeVector(angmom.getAngMomVector(angMomGroup))
galX = vectormath.normalizeVector(vectormath.crossVectors((0,1,0),galZ))
galY = vectormath.normalizeVector(vectormath.crossVectors(galZ,galX))
#===========================================================================
# Create the cube
#===========================================================================
cornerVec = vectormath.addVectors(vectormath.multVectorScalar(boxRad1, galX),vectormath.multVectorScalar(boxRad1, galY))
cornerVec = vectormath.addVectors(cornerVec,vectormath.multVectorScalar(boxRad1, galZ))
cornerVec = vectormath.subVectors(center, cornerVec)
edge1 = vectormath.multVectorScalar(2*boxRad1,galX)
edge2 = vectormath.multVectorScalar(2*boxRad1,galY)
edge3 = vectormath.multVectorScalar(2*boxRad1,galZ)
charm.createGroupAttributeBox('galBox', 'All', 'position',
cornerVec[0],cornerVec[1],cornerVec[2],
edge1[0] ,edge1[1] ,edge1[2],
edge2[0] ,edge2[1] ,edge2[2],
edge3[0] ,edge3[1] ,edge3[2])
numStars = charm.getNumParticles('galBox','star')
numGas = charm.getNumParticles('galBox','gas')
numDark = charm.getNumParticles('galBox','dark')
numTotal = numStars + numGas + numDark
#===========================================================================
# This region outputs the ascii file to be read in by tipsy
#===========================================================================
f = open(filename, 'w') # overwrites pre-existing file
f.write(str(numTotal) + ' ' + str(numGas) + ' ' + str(numStars))
f.write('\n3')
f.write('\n'+ str(charm.getTime())+ '\n')
f.close()
for each in ['star','dark','gas']:charm.createScalarAttribute(each, 'tmpWorking')
def writeAndAppend(attribute):
charm.writeGroupArray('tmpGalBox', attribute, '/tmp/out.tmp')
os.system('tail -n +2 /tmp/out.tmp >> ' + filename)
return
families = ['gas','dark','star']
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('mass')
# Positions
for i in range(0,3):
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
charm.runLocalParticleCodeGroup('tmpGalBox', vectorWriter, ('pos', i))
writeAndAppend('tmpWorking')
# Velocities
for i in range(0,3):
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
charm.runLocalParticleCodeGroup('tmpGalBox', vectorWriter, ('vel', i))
writeAndAppend('tmpWorking')
# Star and dark softening
for each in ['dark', 'star']:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('softening')
# Gas attributes
charm.createGroup_Family('tmpGalBox', 'galBox', 'gas')
for each in ['density','temperature','softening','metals']:
writeAndAppend(each)
#Star stuff
charm.createGroup_Family('tmpGalBox', 'galBox', 'star')
for each in ['metals','formationtime']:
writeAndAppend(each)
#potential
for each in families:
charm.createGroup_Family('tmpGalBox', 'galBox', each)
writeAndAppend('potential')
charm.deleteGroup('tmpGalBox')
#print 'num lines in ' + filename + ' should be: ' + str(9*numTotal+3*numGas+2*numStars+3)
return
