FeatherTableReader

This class enables you to interact with Feather files. Create
one to connect to a file or other InputStream, and call <code>Read()</code> on it to
make an <code>arrow::Table</code>. See its usage in <code><a rd-options="=read_feather" href="/link/read_feather()?package=arrow&version=0.16.0&to=%3Dread_feather" data-mini-rdoc="=read_feather::read_feather()">read_feather()</a></code>.

'Apache' 'Arrow' <https://arrow.apache.org/> is a cross-language
development platform for in-memory data. It specifies a standardized
language-independent columnar memory format for flat and hierarchical data,
organized for efficient analytic operations on modern hardware. This
package provides an interface to the 'Arrow C++' library.

Neal Richardson

arrow

Integration to 'Apache' 'Arrow'

Romain François

Jeroen Ooms

Javier Luraschi

Jeffrey Wong

Apache Arrow 

FeatherTableReader function

The <code>FeatherTableReader$create()</code> factory method instantiates the object and
takes the following arguments:<ul>
<li><code>file</code> A character file name, raw vector, or Arrow file connection object
(e.g. <code>RandomAccessFile</code>).</li>
<li><code>mmap</code> Logical: whether to memory-map the file (default <code>TRUE</code>)</li>
<li><code>...</code> Additional arguments, currently ignored</li>
</ul>

Factory

<ul>
<li><code>$GetDescription()</code></li>
<li><code>$HasDescription()</code></li>
<li><code>$version()</code></li>
<li><code>$num_rows()</code></li>
<li><code>$num_columns()</code></li>
<li><code>$GetColumnName()</code></li>
<li><code>$GetColumn()</code></li>
<li><code>$Read(columns)</code></li>
</ul>

Methods

This class enables you to interact with Feather files. Create
one to connect to a file or other InputStream, and call <code>Read()</code> on it to
make an <code>arrow::Table</code>. See its usage in <code><a rd-options='=read_feather' href='read_feather()'>read_feather()</a></code>.

FeatherTableReader: FeatherTableReader class

Description

Arguments

Factory

Methods