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KIMOTO / SPVM-R-0.103 / lib / SPVM / R / OP / DataFrame.spvm 

            

              
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# Copyright (c) 2024 Yuki Kimoto
# MIT License
class R::OP::DataFrame {
  version_from R;
   
  use R::DataFrame;
  use R::NDArray::Int;
  use R::OP::Matrix;
   
  # Class Methods
  static method cbind : R::DataFrame ($x_data_frame : R::DataFrame, $y_data_frame : R::DataFrame) {
     
    unless ($x_data_frame) {
      die "The data frame \$x_data_frame must be defined.";
    }
     
    unless ($y_data_frame) {
      die "The data frame \$y_data_frame must be defined.";
    }
     
    my $ret_data_frame = R::DataFrame->new;
     
    my $x_ncol = $x_data_frame->ncol;
     
    for (my $col = 0; $col < $x_ncol; $col++) {
      my $x_colname = $x_data_frame->colname($col);
       
      my $x_ndarray = $x_data_frame->col_by_index($col);
       
      $ret_data_frame->insert_col($x_colname, $x_ndarray);
    }
     
    my $y_ncol = $y_data_frame->ncol;
     
    for (my $col = 0; $col < $y_ncol; $col++) {
      my $y_colname = $y_data_frame->colname($col);
       
      my $y_ndarray = $y_data_frame->col_by_index($col);
       
      $ret_data_frame->insert_col($y_colname, $y_ndarray);
    }
     
    return $ret_data_frame;
  }
   
  static method rbind : R::DataFrame ($x_data_frame : R::DataFrame, $y_data_frame : R::DataFrame) {
     
    unless ($x_data_frame) {
      die "The data frame \$x_data_frame must be defined.";
    }
     
    unless ($y_data_frame) {
      die "The data frame \$y_data_frame must be defined.";
    }
     
    my $x_ncol = $x_data_frame->ncol;
     
    my $y_ncol = $y_data_frame->ncol;
     
    unless ($x_ncol == $y_ncol) {
      die "The column numbers of the data frame \$x_data_frame must be equal to the column numbers of the data frame \$y_data_frame.";
    }
     
    my $ncol = $x_ncol;
     
    my $ret_data_frame = R::DataFrame->new;
     
    for (my $i = 0; $i < $ncol; $i++) {
       
      my $x_colname = $x_data_frame->colname($i);
       
      my $x_ndarray = $x_data_frame->col_by_index($i);
       
      my $y_colname = $y_data_frame->colname($i);
       
      my $y_ndarray = $y_data_frame->col_by_index($i);
       
      unless ($x_colname eq $y_colname) {
        die "The column name at column index $i of the data frame \$x_data_frame must be equal to the column name at column index $i of the data frame \$y_data_frame.";
      }
       
      unless (type_name $x_ndarray eq type_name $y_ndarray) {
        die "The type of the n-dimensional array at column index $i of the data frame \$x_data_frame must be equal to the type of the n-dimensional array at column index $i of the data frame \$y_data_frame.";
      }
       
      my $colname = $x_colname;
       
      my $ret_ndarray = R::OP::Matrix->rbind($x_ndarray, $y_ndarray);
       
      $ret_data_frame->insert_col($colname, $ret_ndarray);
    }
     
    return $ret_data_frame;
  }
   
  static method subset : R::DataFrame ($x_data_frame : R::DataFrame, $indexes : R::NDArray::Int, $options : object[] = undef) {
     
    unless ($x_data_frame) {
      die "The data frame \$x_data_frame must be defined.";
    }
     
    if ($x_data_frame->ncol > 0) {
      my $first_ndarray = $x_data_frame->first_col;
       
      unless ($first_ndarray->is_vector) {
        die "The first column of \$x_data_frame must be a vector if columns exists.";
      }
    }
     
    Fn->check_option_names($options, ["select"]);
     
    my $options_h = Hash->new($options);
     
    my $colnames = (string[])$options_h->get_or_default("select", undef);
     
    my $ret_ndarray = $x_data_frame->slice($colnames, [$indexes]);
     
    return $ret_ndarray;
  }
   
  static method na_omit : R::DataFrame ($x_data_frame : R::DataFrame) {
     
    unless ($x_data_frame) {
      die "The data frame \$x_data_frame must be defined.";
    }
     
    my $colnames = $x_data_frame->colnames;
     
    my $nrow = $x_data_frame->nrow;
     
    my $is_na_or = R::OP::Int->rep(R::OP::Int->c(0), $nrow);
     
    for my $colname (@$colnames) {
      my $ndarray = $x_data_frame->col($colname);
       
      my $is_na = R::OP->is_na($ndarray);
       
      $is_na_or = R::OP::Int->or($is_na_or, $is_na);
    }
     
    my $is_not_na_or = R::OP::Int->not($is_na_or);
     
    my $ret_ndarray = &subset($x_data_frame, $is_not_na_or->to_indexes);
     
    return $ret_ndarray;
  }
   
}