mlpack-3.1.1/html/one__hot__encoding_8hpp_source.html

 #ifndef MLPACK_CORE_DATA_ONE_HOT_ENCODING_HPP

 #define MLPACK_CORE_DATA_ONE_HOT_ENCODING_HPP


 #include <mlpack/prereqs.hpp>


 namespace mlpack {

 namespace data {


 template<typename eT, typename RowType>

 void OneHotEncoding(const RowType& labelsIn,

                     arma::Mat<eT>& output);


 } // namespace data

 } // namespace mlpack


 // Include implementation.

 #include "one_hot_encoding_impl.hpp"


 #endif

prereqs.hpp
The core includes that mlpack expects; standard C++ includes and Armadillo.

mlpack::data::OneHotEncoding
void OneHotEncoding(const RowType &labelsIn, arma::Mat< eT > &output)
Given a set of labels of a particular datatype, convert them to binary vector.