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baytrends

Long Term Water Quality Trend Analysis

v2.0.14 · Feb 24, 2026 · GPL-3

Description

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>.

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CRAN Check Status

14 OK
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Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Dependency Network

Dependencies Reverse dependencies dataRetrieval digest dplyr fitdistrplus lubridate knitr memoise mgcv pander plyr readxl sessioninfo survival tibble tidyr baytrends

Version History

new 2.0.14 Mar 10, 2026
updated 2.0.14 ← 2.0.12 diff Feb 23, 2026
updated 2.0.12 ← 2.0.11 diff Jul 25, 2024
updated 2.0.11 ← 2.0.9 diff Feb 22, 2024
updated 2.0.9 ← 2.0.8 diff May 24, 2023
updated 2.0.8 ← 2.0.7 diff May 4, 2022
updated 2.0.7 ← 2.0.5 diff Feb 24, 2022
updated 2.0.5 ← 2.0.4 diff May 13, 2021
updated 2.0.4 ← 2.0.2 diff Apr 18, 2021
updated 2.0.2 ← 1.2.1 diff Nov 23, 2020
updated 1.2.1 ← 1.1.0 diff Mar 30, 2020
updated 1.1.0 ← 1.0.7 diff Mar 13, 2019
new 1.0.7 Jul 18, 2018