.. _program_listing_file__tmp_ws_src_grid_map_grid_map_filters_include_grid_map_filters_MathExpressionFilter.hpp:

Program Listing for File MathExpressionFilter.hpp
=================================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_grid_map_grid_map_filters_include_grid_map_filters_MathExpressionFilter.hpp>` (``/tmp/ws/src/grid_map/grid_map_filters/include/grid_map_filters/MathExpressionFilter.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
    * MathExpressionFilter.hpp
    *
    *  Created on: Aug 16, 2017
    *      Author: Peter Fankhauser
    *   Institute: ETH Zurich, ANYbotics
    */
   
   #ifndef GRID_MAP_FILTERS__MATHEXPRESSIONFILTER_HPP_
   #define GRID_MAP_FILTERS__MATHEXPRESSIONFILTER_HPP_
   
   #include <filters/filter_base.hpp>
   
   #include <string>
   
   #include "EigenLab/EigenLab.hpp"
   
   namespace grid_map
   {
   
   template<typename T>
   class MathExpressionFilter : public filters::FilterBase<T>
   {
   public:
     MathExpressionFilter();
   
     virtual ~MathExpressionFilter();
   
     bool configure() override;
   
     bool update(const T & mapIn, T & mapOut) override;
   
   private:
     EigenLab::Parser<Eigen::MatrixXf> parser_;
   
     std::string expression_;
   
     std::string outputLayer_;
   };
   
   }  // namespace grid_map
   #endif  // GRID_MAP_FILTERS__MATHEXPRESSIONFILTER_HPP_