corner

Return a corner of a matrix or data frame (i.e., upper left, upper right, lower left, lower right).

An assortment of helper functions for managing data (e.g.,
rotating values in matrices by a user-defined angle, switching from
row- to column-indexing), dates (e.g., intuiting year from messy date
strings), handling missing values (e.g., removing elements/rows across
multiple vectors or matrices if any have an NA), text (e.g.,
flushing reports to the console in real-time); and combining data frames
with different schema (copying, filling, or concatenating columns or
applying functions before combining).

Adam B. Smith

omnibus

Helper Tools for Managing Data, Dates, Missing Values, and Text

corner function

<dl><dt>x</dt>
<dd>Data frame or matrix.</dd>
<dt>corner</dt>
<dd>Integer in the set <code>1, 2, 3, 4</code> or character in the set <code>'topleft', 'topright', 'bottomleft', 'bottomright'</code> or in the set <code>'tl', 'tr', 'bl', 'br'</code>. Indicates which corner to return. Integers 1, 2, 3 and 4 correspond to top left, top right, bottom left, and bottom right corners. The default is 1, the top left corner.</dd>
<dt>size</dt>
<dd>Positive integer, number of rows and columns to return. If there are fewer columns/rows than indicated then all columns/rows are returned.</dd></dl>

Arguments

Corner of a matrix or data frame — corner

<dl>

<dt>x</dt>
<dd>Data frame or matrix.</dd>


<dt>corner</dt>
<dd>Integer in the set <code>1, 2, 3, 4</code> or character in the set <code>'topleft', 'topright', 'bottomleft', 'bottomright'</code> or in the set <code>'tl', 'tr', 'bl', 'br'</code>. Indicates which corner to return. Integers 1, 2, 3 and 4 correspond to top left, top right, bottom left, and bottom right corners. The default is 1, the top left corner.</dd>


<dt>size</dt>
<dd>Positive integer, number of rows and columns to return. If there are fewer columns/rows than indicated then all columns/rows are returned.</dd>

</dl>

corner: Corner of a matrix or data frame

Description

Usage

Value

Arguments

See Also

Examples