indexed_df

Create a indexed list, a space efficient way of indexing into a large data frame

internal

A set of tools that solves a common set of problems: you need
to break a big problem down into manageable pieces, operate on each
piece and then put all the pieces back together.  For example, you
might want to fit a model to each spatial location or time point in
your study, summarise data by panels or collapse high-dimensional
arrays to simpler summary statistics. The development of 'plyr' has
been generously supported by 'Becton Dickinson'.

Hadley Wickham

plyr

Tools for Splitting, Applying and Combining Data

indexed_df function

<dl><dt>data</dt>
<dd>environment containing data frame</dd>
<dt>index</dt>
<dd>list of indices</dd>
<dt>vars</dt>
<dd>a character vector giving the variables used for subsetting</dd></dl>

Arguments

An indexed data frame. — indexed_df

<dl>

<dt>data</dt>
<dd>environment containing data frame</dd>


<dt>index</dt>
<dd>list of indices</dd>


<dt>vars</dt>
<dd>a character vector giving the variables used for subsetting</dd>

</dl>

indexed_df: An indexed data frame.

Description

Usage

Arguments