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ProcessAddFld.cpp
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3 // File: ProcessAddFld.cpp
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
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31 //
32 // Description: Add a field to the intput field
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <string>
37 #include <iostream>
38 using namespace std;
39 
40 #include "ProcessAddFld.h"
41 
44 
45 namespace Nektar
46 {
47 namespace Utilities
48 {
49 
50 ModuleKey ProcessAddFld::className =
52  ModuleKey(eProcessModule, "addfld"),
53  ProcessAddFld::create, "add two fields together with optional scaling. Must specify fromfld and scaling is optionally specified with input option scale.");
54 
55 ProcessAddFld::ProcessAddFld(FieldSharedPtr f) : ProcessModule(f)
56 {
57  m_config["scale"] = ConfigOption(false, "1.0", "scale factor");
58 
59  m_config["fromfld"] = ConfigOption(false, "NotSet",
60  "Fld file form which to add field");
61 
62  ASSERTL0(m_config["fromfld"].as<string>().compare("NotSet") != 0,
63  "Need to specify fromfld=file.fld ");
64 
65 }
66 
68 {
69 }
70 
71 void ProcessAddFld::Process(po::variables_map &vm)
72 {
73  if (m_f->m_verbose)
74  {
75  cout << "ProcessAddFld: Adding new fld to input fld" << endl;
76  }
77 
78  ASSERTL0(m_f->m_data.size() != 0,"No input data defined");
79 
80  string scalestr = m_config["scale"].as<string>();
81  NekDouble scale = boost::lexical_cast<NekDouble>(scalestr);
82 
83  string fromfld = m_config["fromfld"].as<string>();
84  FieldSharedPtr fromField = boost::shared_ptr<Field>(new Field());
85 
86  if(m_f->m_exp.size())
87  {
88  // Set up ElementGIDs in case of parallel processing
89  Array<OneD,int> ElementGIDs(m_f->m_exp[0]->GetExpSize());
90  for (int i = 0; i < m_f->m_exp[0]->GetExpSize(); ++i)
91  {
92  ElementGIDs[i] = m_f->m_exp[0]->GetExp(i)->GetGeom()->GetGlobalID();
93  }
94  m_f->m_fld->Import(fromfld,
95  fromField->m_fielddef,
96  fromField->m_data,
98  ElementGIDs);
99  }
100  else
101  {
102  m_f->m_fld->Import(fromfld,
103  fromField->m_fielddef,
104  fromField->m_data,
106  }
107 
108  bool samelength = true;
109  if(fromField->m_data.size() != m_f->m_data.size())
110  {
111  samelength = false;
112  }
113 
114  // scale input field
115  for(int i = 0; i < fromField->m_data.size(); ++i)
116  {
117  int datalen = fromField->m_data[i].size();
118 
119  Vmath::Smul(datalen, scale, &(fromField->m_data[i][0]), 1,
120  &(fromField->m_data[i][0]), 1);
121 
122  if(samelength)
123  {
124  if(datalen != m_f->m_data[i].size())
125  {
126  samelength = false;
127  }
128  }
129  }
130 
131  if(samelength == true)
132  {
133  for(int i = 0; i < m_f->m_data.size(); ++i)
134  {
135  int datalen = m_f->m_data[i].size();
136 
137  Vmath::Vadd(datalen, &(m_f->m_data[i][0]), 1,
138  &(fromField->m_data[i][0]), 1,
139  &(m_f->m_data[i][0]), 1);
140  }
141  }
142  else
143  {
144  ASSERTL0(m_f->m_exp.size() != 0 ,
145  "Input fields have partitions of different length and so xml "
146  "file needs to be specified");
147 
148  int nfields = m_f->m_fielddef[0]->m_fields.size();
149  int ncoeffs = m_f->m_exp[0]->GetNcoeffs();
150  Array<OneD, NekDouble> SaveFld(ncoeffs);
151 
152  for (int j = 0; j < nfields; ++j)
153  {
154  Vmath::Vcopy(ncoeffs,m_f->m_exp[j]->GetCoeffs(),1, SaveFld,1);
155 
156 
157  // since expansion is set up according to m_f search for same variable in new field
158  int nfield;
159  for (nfield = 0; nfield < fromField->m_fielddef[0]->m_fields.size(); ++nfield)
160  {
161  if(fromField->m_fielddef[0]->m_fields[nfield] ==
162  m_f->m_fielddef[0]->m_fields[j])
163  {
164  break;
165  }
166  }
167 
168  ASSERTL0(nfield != fromField->m_fielddef[0]->m_fields.size(),
169  "Could not find field " + m_f->m_fielddef[0]->m_fields[j] + " in from field");
170 
171  // load new field
172  for (int i = 0; i < fromField->m_data.size(); ++i)
173  {
174  m_f->m_exp[j]->ExtractDataToCoeffs(
175  fromField->m_fielddef[i],
176  fromField->m_data[i],
177  fromField->m_fielddef[i]->m_fields[nfield],
178  m_f->m_exp[j]->UpdateCoeffs());
179  }
180 
181  Vmath::Vadd(ncoeffs, m_f->m_exp[j]->GetCoeffs(), 1,
182  SaveFld, 1,
183  m_f->m_exp[j]->UpdateCoeffs(), 1);
184  }
185 
186  std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef
187  = m_f->m_exp[0]->GetFieldDefinitions();
188  std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
189 
190  for(int i = 0; i < nfields; ++i)
191  {
192  for (int j = 0; j < FieldDef.size(); ++j)
193  {
194  FieldDef[j]->m_fields.push_back(m_f->m_fielddef[0]->m_fields[i]);
195  m_f->m_exp[i]->AppendFieldData(FieldDef[j], FieldData[j]);
196  }
197  }
198 
199  m_f->m_fielddef = FieldDef;
200  m_f->m_data = FieldData;
201 
202  }
203 }
204 
205 }
206 }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
pair< ModuleType, string > ModuleKey
virtual void Process()=0
map< string, ConfigOption > m_config
List of configuration values.
STL namespace.
FieldSharedPtr m_f
Field object.
void Smul(int n, const T alpha, const T *x, const int incx, T *y, const int incy)
Scalar multiply y = alpha*y.
Definition: Vmath.cpp:199
double NekDouble
boost::shared_ptr< Field > FieldSharedPtr
Definition: Field.hpp:695
Represents a command-line configuration option.
void Vcopy(int n, const T *x, const int incx, T *y, const int incy)
Definition: Vmath.cpp:1047
static FieldMetaDataMap NullFieldMetaDataMap
Definition: FieldIO.h:54
void Vadd(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Add vector z = x+y.
Definition: Vmath.cpp:285
ModuleFactory & GetModuleFactory()
Abstract base class for processing modules.
tKey RegisterCreatorFunction(tKey idKey, CreatorFunction classCreator, tDescription pDesc="")
Register a class with the factory.
Definition: NekFactory.hpp:215