na2miss

miss2na

Converts missing values (<code>NA</code>s) to or from a user specified value.
From smwrBase package.

manip

internal

Enable users to evaluate long-term trends using a Generalized
Additive Modeling (GAM) approach. The model development includes selecting a
GAM structure to describe nonlinear seasonally-varying changes over time,
incorporation of hydrologic variability via either a river flow or salinity,
the use of an intervention to deal with method or laboratory changes
suspected to impact data values, and representation of left- and
interval-censored data. The approach has been applied to water quality data
in the Chesapeake Bay, a major estuary on the east coast of the United
States to provide insights to a range of management- and research-focused
questions. Methodology described in Murphy (2019)
<doi:10.1016/j.envsoft.2019.03.027>.

Erik Leppo

baytrends

Long Term Water Quality Trend Analysis

na2miss function

<dl><dt>x</dt>
<dd>a vector. Missing values (<code>NA</code>s) are allowed.</dd>
<dt>to</dt>
<dd>the replacement value for <code>NA</code>.</dd>
<dt>from</dt>
<dd>the target value to match and replace with <code>NA</code>.</dd></dl>

Arguments

Recode Data — na2miss

<dl>

<dt>x</dt>
<dd>a vector. Missing values (<code>NA</code>s) are allowed.</dd>


<dt>to</dt>
<dd>the replacement value for <code>NA</code>.</dd>


<dt>from</dt>
<dd>the target value to match and replace with <code>NA</code>.</dd>

</dl>

na2miss: Recode Data

Description

Usage

Value

Arguments

Examples