chunked-package

select

filter

mutate

dplyr-verbs

R is a great tool, but processing large text files with data is cumbersome.
<code>chunked</code> helps you to process large text files with dplyr while loading
only a part of the data in memory. It builds on the execellent R package LaF
Processing commands are writing in dplyr syntax, and <code>chunked</code>
 (using <code>LaF</code>)
 will take care that chunk by chunk is processed, taking far less memory
 than otherwise. <code>chunked</code> is useful for selecting columns, mutating columns
 and filtering rows. It can be used in data pre-processing.

Data stored in text file can be processed chunkwise using 'dplyr' commands. These
are recorded and executed per data chunk, so large files can be processed with
limited memory using the 'LaF' package.

Edwin Jonge

chunked

Chunkwise Text-File Processing for 'dplyr'

Edwin de Jonge

chunked-package function

<ul>
<li>filter</li>
<li>select</li>
<li>rename</li>
<li>mutate</li>
<li>transmute</li>
<li>do</li>
<li>left_join</li>
<li>inner_join</li>
<li>anti_join</li>
<li>semi_join</li>
<li>tbl_vars</li>
<li>collect</li>
</ul>filter, select, do, left_join, inner_join

Implemented dplyr verbs

The following operators are not implemented because data in <code>chunked</code> is processed
 chunkwise, so these are not available.<ul>
<li>full_join</li>
<li>right_join</li>
<li>group_by</li>
<li>arrange</li>
<li>tail</li>
</ul>

chunked-package: Chunked

Description

Arguments

Implemented dplyr verbs

Not implemented