Content - 800a52709a1ef1125a677bb70837b874c4fd7fa8 - 04de9a9/src/remove_row.cpp

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https://github.com/HTDerekLiu/surface_multigrid_code

10 September 2021, 07:17:17 UTC

Tip revision: a827578755d864df68b103c71048c7da7a00ce59 authored by HTDerekLiu on 09 August 2021, 18:36:04 UTC
add a faster example

Tip revision: a827578

remove_row.cpp

#include "remove_row.h"

void remove_row(
  const int rowToRemove,
  Eigen::MatrixXd & matrix)
  {
    unsigned int numRows = matrix.rows()-1;
    unsigned int numCols = matrix.cols();

    if( rowToRemove < numRows )
        matrix.block(rowToRemove,0,numRows-rowToRemove,numCols) = matrix.block(rowToRemove+1,0,numRows-rowToRemove,numCols);

    matrix.conservativeResize(numRows,numCols);
  }

void remove_row(
  const int rowToRemove,
  Eigen::MatrixXi & matrix)
  {
    unsigned int numRows = matrix.rows()-1;
    unsigned int numCols = matrix.cols();

    if( rowToRemove < numRows )
        matrix.block(rowToRemove,0,numRows-rowToRemove,numCols) = matrix.block(rowToRemove+1,0,numRows-rowToRemove,numCols);

    matrix.conservativeResize(numRows,numCols);
  }