def __init__(self):

         #Geometry Properties
         self.Geometry_type_name     = read_data_string(tag_name='Geometry_type',file_name='parameters/parameters.xml')
         self.Cosmological_cosntant  = read_data_float(tag_name='Cosmological_constant',file_name='parameters/parameters.xml')

         #Field Properties
         self.Potential_type_name    = read_data_string(tag_name = 'Potential',file_name = 'parameters/parameters.xml')
         self.Potential_func         = Gravity_Dictionary["Potential"][self.Potential_type_name][0]
         self.Potential_dfunc        = Gravity_Dictionary["Potential"][self.Potential_type_name][1]
         
         #Initial Condition
         self.Initial_Condition_type_name  = read_data_string(tag_name = 'Initial_Condition_Method',file_name = 'parameters/parameters.xml')
         self.Initial_Condition_type = Gravity_Dictionary["Initial_Condition"][self.Initial_Condition_type_name]

         #Numerical Method Setup
         self.Solver_type_name       = read_data_string(tag_name = 'Solver_type',file_name = 'parameters/parameters.xml')
         self.Grid_size              = read_data_int(tag_name = 'Grid_size',file_name = 'parameters/parameters.xml')

         #Ending Conditions
         self.Max_interation         = read_data_int(tag_name = 'i_max',file_name = 'parameters/parameters.xml')
         #Horizon Condition
         self.A_min                  = read_data_float(tag_name = 'A_min',file_name = 'parameters/parameters.xml')

         #Initial Condition Setup
         if (self.Initial_Condition_type != Initial_Condition_Input_File):
            self.field.r = linspace(0.0,pi/2.0,self.Grid_size+1)
            (self.field.phi , self.field.Phi , self.field.Pi) = self.Initial_Condition_type(self.field.r)
         else:
            (self.field.r , self.field.phi , self.field.Phi , self.field.Pi) = self.Initial_Condition_type()

         print "The Gravity Object is initialized susseccfully."
      def __init__(self):

         #Geometry Properties
         self.Geometry_type_name     = read_data_string(tag_name='Geometry_type',file_name='parameters/parameters.xml')
         self.Cosmological_cosntant  = read_data_float(tag_name='Cosmological_constant',file_name='parameters/parameters.xml')

         #Field Properties
         self.Potential_type_name    = read_data_string(tag_name = 'Potential',file_name = 'parameters/parameters.xml')
         self.Potential_func         = Gravity_Dictionary["Potential"][self.Potential_type_name][0]
         self.Potential_dfunc        = Gravity_Dictionary["Potential"][self.Potential_type_name][1]
         
         #Initial Condition
	 #reads in the name of the initial condition
         self.Initial_Condition_type_name  = read_data_string(tag_name = 'Initial_Condition_Method',file_name = 'parameters/parameters.xml')
	 #matches the name of the initial condition to the stuff in the Gravity dictionary

         try:
	         self.Initial_Condition_type = Gravity_Dictionary["Initial_Condition"][self.Initial_Condition_type_name]
	 except KeyError:
		print 'ERROR: Initial Condition name is wrong'
		sys.exit(1)
         #Numerical Method Setup
         self.Solver_type_name       = read_data_string(tag_name = 'Solver_type',file_name = 'parameters/parameters.xml')
         self.Grid_size              = read_data_int(tag_name = 'Grid_size',file_name = 'parameters/parameters.xml')

         #Ending Conditions
         self.Max_interation         = read_data_int(tag_name = 'i_max',file_name = 'parameters/parameters.xml')
         #Horizon Condition
         self.A_min                  = read_data_float(tag_name = 'A_min',file_name = 'parameters/parameters.xml')

	#sets the initial conditions for generating end data 
         try: 
		print os.environ['PBS_ARRAYID']
		self.pbs_arr = True
	 except KeyError:
		print "not a pbs Array"
	 	self.pbs_arr = False		 
	 if self.Initial_Condition_type_name =='Gaussian': #add the report checking before this is done.
		self.initial_eps		= read_data_float(tag_name = 'epsilon' , file_name = 'parameters/Initial_Condition/Gaussian.xml')
		self.initial_sigma		= read_data_float(tag_name = 'sigma' , file_name = 'parameters/Initial_Condition/Gaussian.xml')	
	 	if self.pbs_arr:
			self.initial_eps = Change_eps(self.initial_eps)

	#Initial Condition Setup
         if (self.Initial_Condition_type != Initial_Condition_Input_File):
            self.field.r = linspace(0.0,pi/2.0,self.Grid_size+1)
            (self.field.phi , self.field.Phi , self.field.Pi) = self.Initial_Condition_type(self.field.r)
         else:
            (self.field.r , self.field.phi , self.field.Phi , self.field.Pi) = self.Initial_Condition_type()

         print "The Gravity Object is initialized susseccfully."
def Initial_Condition_Eigenfunction_modes_non_normalized(x):

    Phi = zeros(len(x))
    Pi  = zeros(len(x))
    phi = zeros(len(x))  

    n = read_data_int(tag_name = 'number_of_modes' , file_name = 'parameters/Initial_Condition/Eigenfunction_modes_non_normalized.xml')
    a = read_data_float(tag_name = 'non_normalized_modes_amplitude' , file_name = 'parameters/Initial_Condition/Eigenfunction_modes_non_normalized.xml')

    for i in range(len(x)-1):
       for j in range(1,n+1):
          phi[i]  += a*sqrt(16.0*float(j+1)*float(j+2)/pi) * cos(x[i])**3 * hyp2f1(-j,3+j,1.5,sin(x[i])**2)
          Phi[i]  += -a*4.0*sqrt(float(2+3*j+j**2))/(3.0*sqrt(pi)) * (float(4*j*(j+3))*cos(x[i])**4*hyp2f1(1-j,4+j,2.5,sin(x[i])**2) + 9.0*cos(x[i])**2*hyp2f1(-j,3+j,1.5,sin(x[i])**2) )*sin(x[i])
    print "Assigned Initial Condition is: Eigenfunction modes non-normalized"
    return (phi , Phi , Pi)