The baytrends package was developed to enable users to evaluate
long-term trends in the Chesapeake Bay 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. This approach, which is fully transferable to
other systems, allows for Chesapeake Bay water quality data to be
evaluated in a statistically rigorous, yet flexible way to provide
insights to a range of management- and research-focused questions.
Installation
The CRAN version of baytrends from CRAN
can be installed with the code below.
install.packages("baytrends")
In some cases not all dependent packages are available on the user’s
system. In these cases installing all dependencies is necessary.