Name
SPVM::R::DataFrame - Short Description
Description
The R::DataFrame class in SPVM represents a data frame.
Usage
use R::OP::DataFrame as DFOP;
use R::OP::Int as IOP;
use R::OP::Double as DOP;
use R::OP::String as STROP;
use R::OP::Time::Piece as TPOP;
# Create a R::DataFrame object
my $data_frame = DFOP->data_frame;
$data_frame->set_col("name", STROP->c(["Ken", "Yuki", "Mike"]));
$data_frame->set_col("age", IOP->c([19, 43, 50]));
$data_frame->set_col("weight", DOP->c([(double)50.6, 60.3, 80.5]));
$data_frame->set_col("birth", TPOP->c(["1980-10-10", "1985-12-10", "1970-02-16"]));
my $data_frame_string = $data_frame->to_string;
my $slice_data_frame = $data_frame->slice(["name", "age"], [IOP->c([0, 1])]);
$data_frame->sort(["name", "age desc"]);
my $nrow = $data_frame->nrow;
my $ncol = $data_frame->ncol;
my $dim = $data_frame->first_col->dim;Details
This class is a port of data frame features of R language.
Fields
colobjs_list;
has colobjs_list : List of R::DataFrame::Column;
colobjs_indexes_h
has colobjs_indexes_h : Hash of Int;
Class Methods
static method new : R::DataFrame ();
Instance Methods
colnames
method colnames : string[] ();
exists_col
method exists_col : int ($colname : string);
colname
method colname : string ($col : int);
colindex
method colindex : int ($colname : string);
col_by_index
method col_by_index : R::NDArray ($col : int);
first_col
method first_col : R::NDArray ();
col
method col : R::NDArray ($colname : string);
set_col
method set_col : void ($colname : string, $ndarray : R::NDArray);
insert_col
method insert_col : void ($colname : string, $ndarray : R::NDArray, $before_colname : string = undef);
ncol
method ncol : int ();
nrow
method nrow : int ();
remove_col
method remove_col : void ($colname : string);
clone
method clone : R::DataFrame ($shallow : int = 0);
to_string
method to_string : string ();
slice
method slice : R::DataFrame ($colnames : string[], $asix_indexes_product : R::NDArray::Int[]);
set_order
method set_order : void ($indexes_ndarray : R::NDArray::Int);
sort
method sort : void ($colnames_with_order_by : string[]);
order
method order : R::NDArray::Int ($colnames_with_order_by : string[]);
See Also
Copyright & License
Copyright (c) 2024 Yuki Kimoto
MIT License