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/***********************************************/
/**
* @file matrixGeneratorElementManipulation.h
*
* @brief The elements of a matrix are replaced an expression
*
* @author Torsten Mayer-Guerr
* @date 2017-09-01
*
*/
/***********************************************/
#ifndef __GROOPS_MATRIXGENERATORELEMENTMANIPULATION__
#define __GROOPS_MATRIXGENERATORELEMENTMANIPULATION__
// Latex documentation
#ifdef DOCSTRING_MatrixGenerator
static const char *docstringMatrixGeneratorElementManipulation = R"(
\subsection{Element manipulation}
The elements of a matrix are replaced an expression.
For each element of the matrix the variables \verb|data|, \verb|row|, \verb|column|
are set and the expression \config{element} is evaluated and replaces the element.
Additionally the standard data variables are available (assigned each row),
see~\reference{dataVariables}{general.parser:dataVariables}.
)";
#endif
/***********************************************/
#include "base/import.h"
#include "parser/dataVariables.h"
#include "matrixGenerator.h"
/***** CLASS ***********************************/
/** @brief The elements of a matrix are replaced an expression
* @ingroup matrixGeneratorGroup
* @see MatrixGenerator */
class MatrixGeneratorElementManipulation : public MatrixGeneratorBase
{
ExpressionVariablePtr expression;
MatrixGeneratorPtr matrix;
public:
MatrixGeneratorElementManipulation(Config &config);
void compute(Matrix &A, UInt rowsBefore, UInt columnsBefore, UInt &startRow, UInt &startCol);
};
/***********************************************/
/***** Inlines *********************************/
/***********************************************/
inline MatrixGeneratorElementManipulation::MatrixGeneratorElementManipulation(Config &config)
{
try
{
readConfig(config, "matrix", matrix, Config::MUSTSET, "", "");
readConfig(config, "element", expression, Config::MUSTSET, "data", "for each element of matrix (variables: data, row, column, rows, columns, rowsBefore, columnsBefore)");
if(isCreateSchema(config)) return;
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
inline void MatrixGeneratorElementManipulation::compute(Matrix &A, UInt rowsBefore, UInt columnsBefore, UInt &/*startRow*/, UInt &/*startCol*/)
{
try
{
A = matrix->compute();
VariableList varList;
varList.setVariable("rowsBefore", static_cast<Double>(rowsBefore));
varList.setVariable("columnsBefore", static_cast<Double>(columnsBefore));
varList.setVariable("rows", static_cast<Double>(A.rows()));
varList.setVariable("columns", static_cast<Double>(A.columns()));
addDataVariables(A, varList);
varList.undefineVariable("row");
varList.undefineVariable("column");
varList.undefineVariable("data");
expression->simplify(varList);
for(UInt z=0; z<A.rows(); z++)
{
evaluateDataVariables(A, z, varList);
for(UInt s=0; s<A.columns(); s++)
{
varList.setVariable("row", static_cast<Double>(z));
varList.setVariable("column", static_cast<Double>(s));
varList.setVariable("data", A(z,s));
A(z,s) = expression->evaluate(varList);
}
}
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
#endif
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