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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),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
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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  if(m_f->m_comm->GetRank() == 0)
76  {
77  cout << "ProcessAddFld: Adding new fld to input fld..." << endl;
78  }
79  }
80 
81  ASSERTL0(m_f->m_data.size() != 0,"No input data defined");
82 
83  string scalestr = m_config["scale"].as<string>();
84  NekDouble scale = boost::lexical_cast<NekDouble>(scalestr);
85 
86  string fromfld = m_config["fromfld"].as<string>();
87  FieldSharedPtr fromField = boost::shared_ptr<Field>(new Field());
88 
89  if(m_f->m_exp.size())
90  {
91  // Set up ElementGIDs in case of parallel processing
92  Array<OneD,int> ElementGIDs(m_f->m_exp[0]->GetExpSize());
93  for (int i = 0; i < m_f->m_exp[0]->GetExpSize(); ++i)
94  {
95  ElementGIDs[i] = m_f->m_exp[0]->GetExp(i)->GetGeom()->GetGlobalID();
96  }
97  m_f->m_fld->Import(fromfld,
98  fromField->m_fielddef,
99  fromField->m_data,
101  ElementGIDs);
102  }
103  else
104  {
105  m_f->m_fld->Import(fromfld,
106  fromField->m_fielddef,
107  fromField->m_data,
109  }
110 
111  bool samelength = true;
112  if(fromField->m_data.size() != m_f->m_data.size())
113  {
114  samelength = false;
115  }
116 
117  // scale input field
118  for(int i = 0; i < fromField->m_data.size(); ++i)
119  {
120  int datalen = fromField->m_data[i].size();
121 
122  Vmath::Smul(datalen, scale, &(fromField->m_data[i][0]), 1,
123  &(fromField->m_data[i][0]), 1);
124 
125  if(samelength)
126  {
127  if(datalen != m_f->m_data[i].size())
128  {
129  samelength = false;
130  }
131  }
132  }
133 
134  if(samelength == true)
135  {
136  for(int i = 0; i < m_f->m_data.size(); ++i)
137  {
138  int datalen = m_f->m_data[i].size();
139 
140  Vmath::Vadd(datalen, &(m_f->m_data[i][0]), 1,
141  &(fromField->m_data[i][0]), 1,
142  &(m_f->m_data[i][0]), 1);
143  }
144  }
145  else
146  {
147  ASSERTL0(m_f->m_exp.size() != 0 ,
148  "Input fields have partitions of different length and so xml "
149  "file needs to be specified");
150 
151  int nfields = m_f->m_fielddef[0]->m_fields.size();
152  int ncoeffs = m_f->m_exp[0]->GetNcoeffs();
153  Array<OneD, NekDouble> SaveFld(ncoeffs);
154 
155  for (int j = 0; j < nfields; ++j)
156  {
157  Vmath::Vcopy(ncoeffs,m_f->m_exp[j]->GetCoeffs(),1, SaveFld,1);
158 
159 
160  // since expansion is set up according to m_f search for same variable in new field
161  int nfield;
162  for (nfield = 0; nfield < fromField->m_fielddef[0]->m_fields.size(); ++nfield)
163  {
164  if(fromField->m_fielddef[0]->m_fields[nfield] ==
165  m_f->m_fielddef[0]->m_fields[j])
166  {
167  break;
168  }
169  }
170 
171  ASSERTL0(nfield != fromField->m_fielddef[0]->m_fields.size(),
172  "Could not find field " + m_f->m_fielddef[0]->m_fields[j] + " in from field");
173 
174  // load new field
175  for (int i = 0; i < fromField->m_data.size(); ++i)
176  {
177  m_f->m_exp[j]->ExtractDataToCoeffs(
178  fromField->m_fielddef[i],
179  fromField->m_data[i],
180  fromField->m_fielddef[i]->m_fields[nfield],
181  m_f->m_exp[j]->UpdateCoeffs());
182  }
183 
184  Vmath::Vadd(ncoeffs, m_f->m_exp[j]->GetCoeffs(), 1,
185  SaveFld, 1,
186  m_f->m_exp[j]->UpdateCoeffs(), 1);
187  }
188 
189  std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef
190  = m_f->m_exp[0]->GetFieldDefinitions();
191  std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
192 
193  for(int i = 0; i < nfields; ++i)
194  {
195  for (int j = 0; j < FieldDef.size(); ++j)
196  {
197  FieldDef[j]->m_fields.push_back(m_f->m_fielddef[0]->m_fields[i]);
198  m_f->m_exp[i]->AppendFieldData(FieldDef[j], FieldData[j]);
199  }
200  }
201 
202  m_f->m_fielddef = FieldDef;
203  m_f->m_data = FieldData;
204  }
205 }
206 
207 }
208 }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:188
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