Utils Class Reference

Class Utils. More...

#include <utils.h>

Classes
struct	Range
	Range stucture. More...

Public Member Functions
	Utils ()
	Constructor. More...

Static Public Member Functions
static double	deg2rad (double deg)
	Convert degrees to rad. More...
static std::vector< int >	analog_str_buf_to_int_vec (const std::string &str)
	Convert comma-delimited string to int vector of analog values. More...
static std::vector< double >	analog_str_buf_to_double_vec (const std::string &str)
	Convert comma-delimited string to double vector of analog values. More...
static Eigen::MatrixXd	load_matrix_data (std::string filename)
	Load Eigen double matrix from csv file. More...

Detailed Description

Class Utils.

This class includes some generic function that are used in various places inside the project.

Definition at line 16 of file utils.h.

Constructor & Destructor Documentation

Utils()

Utils::Utils

(

)

Constructor.

Member Function Documentation

analog_str_buf_to_double_vec()

std::vector< double > Utils::analog_str_buf_to_double_vec ( const std::string &  str )

static

Convert comma-delimited string to double vector of analog values.

Return a vector of doubles from a comma-delimited string.

Parameters

str	The comma-delimited string.

Returns

std::vector<int> The output vector of doubles.

Definition at line 34 of file utils.cpp.

{
    // Initialize data vector
    std::vector<double> data_vec;
 
    // Initialize string stream
    std::stringstream ss(str);
 
    // Get data and convert to analog
    while (ss.good())
    {
        std::string substr;
        std::getline(ss, substr, ',');
        data_vec.push_back(std::stod(substr));
    }
 
    return data_vec;
}

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analog_str_buf_to_int_vec()

std::vector< int > Utils::analog_str_buf_to_int_vec ( const std::string &  str )

static

Convert comma-delimited string to int vector of analog values.

Return a vector of integers from a comma-delimited string. (could have been templated if you can template stoi and stod).

Parameters

str	The comma-delimited string.

Returns

std::vector<int> The output vector of integers.

Definition at line 9 of file utils.cpp.

{
    // Initialize data vector
    std::vector<int> data_vec;
 
    // Initialize string stream
    std::stringstream ss(str);
 
    // Get data and convert to analog
    while (ss.good())
    {
        std::string substr;
        std::getline(ss, substr, ',');
        data_vec.push_back(std::stoi(substr));
    }
 
    return data_vec;
}

deg2rad()

static double Utils::deg2rad ( double  deg )

inlinestatic

Convert degrees to rad.

Definition at line 30 of file utils.h.

{ return (deg * (M_PI / 180.0)); }

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load_matrix_data()

Eigen::MatrixXd Utils::load_matrix_data ( std::string  filename )

static

Load Eigen double matrix from csv file.

Load Eigen Matrix from csv file.

Parameters

filename

Returns

Eigen::MatrixXd The matrix to be read.

Definition at line 59 of file utils.cpp.

{
  // Matrix entries
  std::vector<double> matrix_entries;
 
  // In this object we store the data from the matrix
  std::ifstream matrix_data_file(filename);
 
  // This variable is used to store the row of the matrix that contains commas 
  std::string matrix_row_string;
 
  // This variable is used to store the matrix entry;
  std::string matrix_entry;
 
  // This variable is used to track the number of rows
  int matrix_row_number = 0;
 
  /* We read a row by row of matrix_data_file and store every line into the
    lstring variable matrix_row_string */
  while (std::getline(matrix_data_file, matrix_row_string)) 
  {
    // Convert matrixRowString that is a string to a stream variable.
    std::stringstream matrix_row_string_stream(matrix_row_string);
 
    /* here we read pieces of the stream matrix_row_string_stream until every
      comma, and store the resulting character into the matrix_entry */
 
      while (std::getline(matrix_row_string_stream, matrix_entry, ',')) 
      {
        /* Here we convert the string to double and fill in the row vector
        storing all the matrix entries */
        matrix_entries.push_back(stod(matrix_entry));   
      }
 
      // Update the column numbers
      matrix_row_number++; 
  }
 
    /* Here we convet the vector variable into the matrix and return the
    resulting object, note that matrix_entris.data() is the pointer to the
    first memory location at which the entries of the vector matrixEntries are
    stored */
 
    return Eigen::Map< Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic,
      Eigen::RowMajor>>(matrix_entries.data(), matrix_row_number,
      matrix_entries.size() / matrix_row_number);
}

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The documentation for this class was generated from the following files:

• include/utils.h
• src/utils.cpp