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Reference documentation for deal.II version 8.1.0
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#include <data_out_base.h>
Classes | |
struct | Point3Comp |
Public Member Functions | |
DataOutFilter (const DataOutBase::DataOutFilterFlags &flags) | |
template<int dim> | |
void | write_point (const unsigned int &index, const Point< dim > &p) |
template<int dim> | |
void | write_cell (unsigned int index, unsigned int start, unsigned int d1, unsigned int d2, unsigned int d3) |
void | write_data_set (const std::string &name, const unsigned int &dimension, const unsigned int &set_num, const Table< 2, double > &data_vectors) |
void | fill_node_data (std::vector< double > &node_data) const |
void | fill_cell_data (const unsigned int &local_node_offset, std::vector< unsigned int > &cell_data) const |
std::string | get_data_set_name (const unsigned int &set_num) const |
unsigned int | get_data_set_dim (const unsigned int &set_num) const |
const double * | get_data_set (const unsigned int &set_num) const |
unsigned int | n_nodes () const |
unsigned int | n_cells () const |
unsigned int | n_data_sets () const |
void | flush_points () |
void | flush_cells () |
Private Types | |
typedef std::multimap< Point< 3 >, unsigned int, Point3Comp > | Map3DPoint |
Private Member Functions | |
void | internal_add_cell (const unsigned int &cell_index, const unsigned int &pt_index) |
Private Attributes | |
DataOutBase::DataOutFilterFlags | flags |
Flags used to specify filtering behavior. | |
int | node_dim |
Dimensionality of the nodes, used to properly output filtered data. | |
int | n_cell_verts |
Number of vertices per cell. | |
Map3DPoint | existing_points |
Map of points to an internal index. | |
std::map< unsigned int, unsigned int > | filtered_points |
Map of actual point index to internal point index. | |
std::map< unsigned int, unsigned int > | filtered_cells |
Map of cells to the filtered points. | |
std::vector< std::string > | data_set_names |
Data set names. | |
std::vector< unsigned int > | data_set_dims |
Data set dimensions. | |
std::vector< std::vector< double > > | data_sets |
Data set data. | |
DataOutFilter provides a way to remove redundant vertices and values generated by the deal.II output. By default, DataOutBase and the classes that build on it output data at each corner of each cell. This means that data is output multiple times for each vertex of the mesh. The purpose of this scheme is to support output of discontinuous quantities, either because the finite element space is discontinuous or because the quantity that is output is computed from a solution field and is discontinuous across faces.
This class is an attempt to rein in the amount of data that is written. If the fields that are written to files are indeed discontinuous, the only way to faithfully represent them is indeed to write multiple values for each vertex (this is typically done by writing multiple node locations for the same vertex and defining data at these nodes). However, for fine meshes, one may not necessarily be interested in an exact representation of output fields that will likely only have small discontinuities. Rather, it may be sufficient to just output one value per vertex, which may be chosen arbitrarily from among those that are defined at this vertex from any of the adjacent cells.
Definition at line 1229 of file data_out_base.h.
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private |
Record a cell vertex index based on the internal reordering.
void DataOutBase::DataOutFilter::write_point | ( | const unsigned int & | index, |
const Point< dim > & | p | ||
) |
Write a point with the specified index into the filtered data set. If the point already exists and we are filtering redundant values, the provided index will internally refer to another recorded point.
void DataOutBase::DataOutFilter::write_cell | ( | unsigned int | index, |
unsigned int | start, | ||
unsigned int | d1, | ||
unsigned int | d2, | ||
unsigned int | d3 | ||
) |
Record a deal.II cell in the internal reordered format.
void DataOutBase::DataOutFilter::write_data_set | ( | const std::string & | name, |
const unsigned int & | dimension, | ||
const unsigned int & | set_num, | ||
const Table< 2, double > & | data_vectors | ||
) |
Filter and record a data set. If there are multiple values at a given vertex and redundant values are being removed, one is arbitrarily chosen as the recorded value. In the future this can be expanded to average/min/max multiple values at a given vertex.
void DataOutBase::DataOutFilter::fill_node_data | ( | std::vector< double > & | node_data | ) | const |
Resize and fill a vector with all the filtered node vertex points, for output to a file.
void DataOutBase::DataOutFilter::fill_cell_data | ( | const unsigned int & | local_node_offset, |
std::vector< unsigned int > & | cell_data | ||
) | const |
Resize and fill a vector with all the filtered cell vertex indices, for output to a file.
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inline |
Get the name of the data set indicated by the set number.
Definition at line 1320 of file data_out_base.h.
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inline |
Get the dimensionality of the data set indicated by the set number.
Definition at line 1328 of file data_out_base.h.
Get the raw double valued data of the data set indicated by the set number.
Definition at line 1336 of file data_out_base.h.
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inline |
Return the number of nodes in this DataOutFilter. This may be smaller than the original number of nodes if filtering is enabled.
Definition at line 1345 of file data_out_base.h.
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inline |
Return the number of filtered cells in this DataOutFilter. Cells are not filtered so this will be the original number of cells.
Definition at line 1354 of file data_out_base.h.
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inline |
Return the number of filtered data sets in this DataOutFilter. Data sets are not filtered so this will be the original number of data sets.
Definition at line 1363 of file data_out_base.h.
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inline |
Empty functions to do base class inheritance.
Definition at line 1371 of file data_out_base.h.
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inline |
Empty functions to do base class inheritance.
Definition at line 1376 of file data_out_base.h.