Exploring Water Quality Monitoring Data
monthNum
Converts matrix to vector time series for various analyses
date2decyear
Class "DateTime"
Decompose a time series
decyear2date
Convert conductivity to salinity
Empirical orthogonal function analysis
Plot EOF percent variance
Plot EOF analysis results
Interpolate or substitute missing time series values
layerMean
leapYear
Mann-Kendall trend test and the Sen slope
meanSub
monthCor
Dissolved oxygen at saturation
Nonparametric Change-Point Detection
Methods for Function phenoAmp
Phenological amplitude
Methods for Function phenoPhase
Phenological phase
Plots seasonal patterns for a time series
Time series plot
Anomaly plot of time series
Image plot of monthly time series
R2pss
Seasonal and Regional Kendall trend test
Rolling Seasonal Kendall trend test
Determine seasonal trends
Trend homogeneity test
Convert time series to data frame
Methods for Function tsMake
Create time series from water quality data
tsSub
Class WqData
Construct an object of class "WqData"
The main purpose of wql is to explore seasonal time series through p...
Miscellaneous utility functions
Class "zoo"
Functions to assist in the processing and exploration of data from environmental monitoring programs. The package name stands for "water quality" and reflects the original focus on time series data for physical and chemical properties of water, as well as the biota. Intended for programs that sample approximately monthly, quarterly or annually at discrete stations, a feature of many legacy data sets. Most of the functions should be useful for analysis of similar-frequency time series regardless of the subject matter.