.mergeFlow

iSpec

gageID

hydro.var

<p>data generated by detrended.flow.  Default = flow.detrended.</p>

flow.detrended

<p>merge flow variable into analysis data frame and update iSpec with variable name</p>

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

.mergeFlow function

merge flow variable into analysis data frame and update iSpec with variable name — .mergeFlow

merge flow variable into analysis data frame and update iSpec with variable name

.mergeFlow: merge flow variable into analysis data frame and update iSpec with variable name

Description

Usage

Arguments