# Integration to 'Apache' 'Arrow'

## Documentation for package ‘arrow’ version 25.0.0

- DESCRIPTION file.
- Package NEWS.

## Help Pages

A B C D E F G H I J L M N O P R S T U V W

## -- A --

acero | Functions available in Arrow dplyr queries
Array | Array Classes
ArrayData | ArrayData class
arrow-dplyr | Functions available in Arrow dplyr queries
arrow-functions | Functions available in Arrow dplyr queries
arrow-verbs | Functions available in Arrow dplyr queries
arrow_array | Create an Arrow Array
arrow_info | Report information on the package's capabilities
arrow_table | Create an Arrow Table
arrow_with_acero | Report information on the package's capabilities
arrow_with_dataset | Report information on the package's capabilities
arrow_with_gcs | Report information on the package's capabilities
arrow_with_json | Report information on the package's capabilities
arrow_with_parquet | Report information on the package's capabilities
arrow_with_s3 | Report information on the package's capabilities
arrow_with_substrait | Report information on the package's capabilities
as_arrow_array | Convert an object to an Arrow Array
as_arrow_array.Array | Convert an object to an Arrow Array
as_arrow_array.ChunkedArray | Convert an object to an Arrow Array
as_arrow_array.Scalar | Convert an object to an Arrow Array
as_arrow_table | Convert an object to an Arrow Table
as_arrow_table.arrow_dplyr_query | Convert an object to an Arrow Table
as_arrow_table.data.frame | Convert an object to an Arrow Table
as_arrow_table.Dataset | Convert an object to an Arrow Table
as_arrow_table.default | Convert an object to an Arrow Table
as_arrow_table.RecordBatch | Convert an object to an Arrow Table
as_arrow_table.RecordBatchReader | Convert an object to an Arrow Table
as_arrow_table.Schema | Convert an object to an Arrow Table
as_arrow_table.Table | Convert an object to an Arrow Table
as_chunked_array | Convert an object to an Arrow ChunkedArray
as_chunked_array.Array | Convert an object to an Arrow ChunkedArray
as_chunked_array.ChunkedArray | Convert an object to an Arrow ChunkedArray
as_data_type | Convert an object to an Arrow DataType
as_data_type.DataType | Convert an object to an Arrow DataType
as_data_type.Field | Convert an object to an Arrow DataType
as_data_type.Schema | Convert an object to an Arrow DataType
as_record_batch | Convert an object to an Arrow RecordBatch
as_record_batch.arrow_dplyr_query | Convert an object to an Arrow RecordBatch
as_record_batch.data.frame | Convert an object to an Arrow RecordBatch
as_record_batch.RecordBatch | Convert an object to an Arrow RecordBatch
as_record_batch.Table | Convert an object to an Arrow RecordBatch
as_record_batch_reader | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.arrow_dplyr_query | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.data.frame | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.Dataset | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.function | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.RecordBatch | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.RecordBatchReader | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.Scanner | Convert an object to an Arrow RecordBatchReader
as_record_batch_reader.Table | Convert an object to an Arrow RecordBatchReader
as_schema | Convert an object to an Arrow Schema
as_schema.Schema | Convert an object to an Arrow Schema
as_schema.StructType | Convert an object to an Arrow Schema

## -- B --

binary | Create Arrow data types
bool | Create Arrow data types
boolean | Create Arrow data types
Buffer | Buffer class
buffer | Create a Buffer
BufferOutputStream | OutputStream classes
BufferReader | InputStream classes

## -- C --

c.Array | Concatenate zero or more Arrays
call_function | Call an Arrow compute function
ChunkedArray | ChunkedArray class
chunked_array | Create a Chunked Array
Codec | Compression Codec class
codec_is_available | Check whether a compression codec is available
CompressedInputStream | Compressed stream classes
CompressedOutputStream | Compressed stream classes
compression | Compressed stream classes
concat_arrays | Concatenate zero or more Arrays
concat_tables | Concatenate one or more Tables
copy_files | Copy files between FileSystems
cpu_count | Manage the global CPU thread pool in libarrow
create_package_with_all_dependencies | Create a source bundle that includes all thirdparty dependencies
CsvConvertOptions | File reader options
CsvFileFormat | CSV dataset file format
CsvFragmentScanOptions | Format-specific scan options
CsvParseOptions | File reader options
CsvReadOptions | File reader options
CsvTableReader | Arrow CSV and JSON table reader classes
CsvWriteOptions | File reader options
csv_convert_options | CSV Convert Options
csv_parse_options | CSV Parsing Options
csv_read_options | CSV Reading Options
csv_write_options | CSV Writing Options

## -- D --

data-type | Create Arrow data types
Dataset | Multi-file datasets
DatasetFactory | Multi-file datasets
dataset_factory | Create a DatasetFactory
DataType | DataType class
date32 | Create Arrow data types
date64 | Create Arrow data types
decimal | Create Arrow data types
decimal128 | Create Arrow data types
decimal256 | Create Arrow data types
decimal32 | Create Arrow data types
decimal64 | Create Arrow data types
dictionary | Create a dictionary type
DictionaryArray | Array Classes
DictionaryType | DictionaryType class
DirectoryPartitioning | Define Partitioning for a Dataset
DirectoryPartitioningFactory | Define Partitioning for a Dataset
duration | Create Arrow data types

## -- E --

Expression | Arrow expressions
ExtensionArray | ExtensionArray class
ExtensionType | ExtensionType class

## -- F --

FeatherReader | FeatherReader class
Field | Field class
field | Create a Field
FileFormat | Dataset file formats
FileInfo | FileSystem entry info
FileOutputStream | OutputStream classes
FileSelector | file selector
FileSystem | FileSystem classes
FileSystemDataset | Multi-file datasets
FileSystemDatasetFactory | Multi-file datasets
FileWriteOptions | Format-specific write options
FixedSizeListArray | Array Classes
FixedSizeListType | Create Arrow data types
fixed_size_binary | Create Arrow data types
fixed_size_list_of | Create Arrow data types
flight_connect | Connect to a Flight server
flight_disconnect | Explicitly close a Flight client
flight_get | Get data from a Flight server
flight_path_exists | See available resources on a Flight server
flight_put | Send data to a Flight server
float | Create Arrow data types
float16 | Create Arrow data types
float32 | Create Arrow data types
float64 | Create Arrow data types
FragmentScanOptions | Format-specific scan options

## -- G --

GcsFileSystem | FileSystem classes
gs_bucket | Connect to a Google Cloud Storage (GCS) bucket

## -- H --

halffloat | Create Arrow data types
HivePartitioning | Define Partitioning for a Dataset
HivePartitioningFactory | Define Partitioning for a Dataset
hive_partition | Construct Hive partitioning

## -- I --

infer_schema | Extract a schema from an object
infer_type | Infer the arrow Array type from an R object
InMemoryDataset | Multi-file datasets
InputStream | InputStream classes
install_arrow | Install or upgrade the Arrow library
install_pyarrow | Install pyarrow for use with reticulate
int16 | Create Arrow data types
int32 | Create Arrow data types
int64 | Create Arrow data types
int8 | Create Arrow data types
io_thread_count | Manage the global I/O thread pool in libarrow
IpcFileFormat | Dataset file formats
is_in | Value matching for Arrow objects

## -- J --

JsonFileFormat | JSON dataset file format
JsonFragmentScanOptions | Format-specific scan options
JsonParseOptions | File reader options
JsonReadOptions | File reader options
JsonTableReader | Arrow CSV and JSON table reader classes

## -- L --

LargeListArray | Array Classes
large_binary | Create Arrow data types
large_list_of | Create Arrow data types
large_utf8 | Create Arrow data types
ListArray | Array Classes
list_compute_functions | List available Arrow C++ compute functions
list_flights | See available resources on a Flight server
list_of | Create Arrow data types
load_flight_server | Load a Python Flight server
LocalFileSystem | FileSystem classes

## -- M --

MapArray | Array Classes
MapType | Create Arrow data types
map_batches | Apply a function to a stream of RecordBatches
map_of | Create Arrow data types
match_arrow | Value matching for Arrow objects
MemoryMappedFile | InputStream classes
Message | Message class
MessageReader | MessageReader class
mmap_create | Create a new read/write memory mapped file of a given size
mmap_open | Open a memory mapped file

## -- N --

new_extension_array | Extension types
new_extension_type | Extension types
null | Create Arrow data types

## -- O --

open_csv_dataset | Open a multi-file dataset of CSV or other delimiter-separated format
open_dataset | Open a multi-file dataset
open_delim_dataset | Open a multi-file dataset of CSV or other delimiter-separated format
open_tsv_dataset | Open a multi-file dataset of CSV or other delimiter-separated format
OutputStream | OutputStream classes

## -- P --

ParquetArrowReaderProperties | ParquetArrowReaderProperties class
ParquetFileFormat | Dataset file formats
ParquetFileReader | ParquetFileReader class
ParquetFileWriter | ParquetFileWriter class
ParquetFragmentScanOptions | Format-specific scan options
ParquetReaderProperties | ParquetReaderProperties class
ParquetWriterProperties | ParquetWriterProperties class
Partitioning | Define Partitioning for a Dataset

## -- R --

RandomAccessFile | InputStream classes
ReadableFile | InputStream classes
read_csv2_arrow | Read a CSV or other delimited file with Arrow
read_csv_arrow | Read a CSV or other delimited file with Arrow
read_delim_arrow | Read a CSV or other delimited file with Arrow
read_feather | Read a Feather file (an Arrow IPC file)
read_ipc_file | Read a Feather file (an Arrow IPC file)
read_ipc_stream | Read Arrow IPC stream format
read_json_arrow | Read a JSON file
read_message | Read a Message from a stream
read_parquet | Read a Parquet file
read_schema | Read a Schema from a stream
read_tsv_arrow | Read a CSV or other delimited file with Arrow
RecordBatch | RecordBatch class
RecordBatchFileReader | RecordBatchReader classes
RecordBatchFileWriter | RecordBatchWriter classes
RecordBatchReader | RecordBatchReader classes
RecordBatchStreamReader | RecordBatchReader classes
RecordBatchStreamWriter | RecordBatchWriter classes
RecordBatchWriter | RecordBatchWriter classes
record_batch | Create a RecordBatch
register_extension_type | Extension types
register_scalar_function | Register user-defined functions
reregister_extension_type | Extension types

## -- S --

S3FileSystem | FileSystem classes
s3_bucket | Connect to an AWS S3 bucket
Scalar | Arrow scalars
scalar | Create an Arrow Scalar
Scanner | Scan the contents of a dataset
ScannerBuilder | Scan the contents of a dataset
Schema | Schema class
schema | Create a schema or extract one from an object.
set_cpu_count | Manage the global CPU thread pool in libarrow
set_io_thread_count | Manage the global I/O thread pool in libarrow
show_exec_plan | Show the details of an Arrow Execution Plan
string | Create Arrow data types
struct | Create Arrow data types
StructArray | Array Classes
StructScalar | Create an Arrow Scalar
SubTreeFileSystem | FileSystem classes

## -- T --

Table | Table class
time32 | Create Arrow data types
time64 | Create Arrow data types
timestamp | Create Arrow data types
TimestampParser | File reader options
to_arrow | Create an Arrow object from a DuckDB connection
to_duckdb | Create a (virtual) DuckDB table from an Arrow object

## -- U --

uint16 | Create Arrow data types
uint32 | Create Arrow data types
uint64 | Create Arrow data types
uint8 | Create Arrow data types
unify_schemas | Combine and harmonize schemas
UnionDataset | Multi-file datasets
unregister_extension_type | Extension types
utf8 | Create Arrow data types

## -- V --

value_counts | 'table' for Arrow objects
vctrs_extension_array | Extension type for generic typed vectors
vctrs_extension_type | Extension type for generic typed vectors

## -- W --

write_csv_arrow | Write CSV file to disk
write_csv_dataset | Write a dataset into partitioned flat files.
write_dataset | Write a dataset
write_delim_dataset | Write a dataset into partitioned flat files.
write_feather | Write a Feather file (an Arrow IPC file)
write_ipc_file | Write a Feather file (an Arrow IPC file)
write_ipc_stream | Write Arrow IPC stream format
write_parquet | Write Parquet file to disk
write_to_raw | Write Arrow data to a raw vector
write_tsv_dataset | Write a dataset into partitioned flat files.