sum_isna

The count of missing values in an atomic vector, equivalent to
to <code>sum(is.na(x))</code>.

Provides utility functions that are simply, frequently used,
but may require higher performance that what can be obtained from base R.
Incidentally provides support for 'reverse geocoding', such as matching a point
with its nearest neighbour in another array. Used as a complement to package
'hutils' by sacrificing compilation or installation time for higher running
speeds. The name is a portmanteau of the author and 'Rcpp'.

Hugh Parsonage

hutilscpp

Miscellaneous Functions in C++

Simon Urbanek

sum_isna function

<dl><dt>x</dt>
<dd>An atomic vector.</dd>
<dt>do_anyNA</dt>
<dd>Should <code>anyNA(x)</code> be executed before an attempt to
count the <code>NA</code>'s in <code>x</code> one-by-one? By default, set to <code>TRUE</code>,
since it is generally quicker. It will only be slower when <code>NA</code> is rare
and occurs late in <code>x</code>.
Ignored silently if <code>nThread != 1</code>.</dd>
<dt>nThread</dt>
<dd><dl>
<dt><code>nThread</code></dt>
<dd>Number of threads to use.</dd></dl></dd>
</dl>

Arguments

Number of missing values — sum_isna

<dl>

<dt>x</dt>
<dd>An atomic vector.</dd>


<dt>do_anyNA</dt>
<dd>Should <code>anyNA(x)</code> be executed before an attempt to
count the <code>NA</code>'s in <code>x</code> one-by-one? By default, set to <code>TRUE</code>,
since it is generally quicker. It will only be slower when <code>NA</code> is rare
and occurs late in <code>x</code>.
Ignored silently if <code>nThread != 1</code>.</dd>


<dt>nThread</dt>
<dd><dl>
<dt><code>nThread</code></dt>
<dd>Number of threads to use.</dd>


</dl></dd>

</dl>

sum_isna: Number of missing values

Description

Usage

Arguments

Examples