annualtrend.ts: Explore long term annual trends with Theil-Sen Estimator

In RSAlgaeR: Builds Empirical Remote Sensing Models of Water Quality Variables and Analyzes Long-Term Trends

Description

Calculates annual linear trend of average values and significance of with Theil-Sen Estimator (used for robust to non-normal data)

Usage

annualtrend.ts(record, valuecol, datecol, var, monthlybias = FALSE)

Arguments

record	dataframe with record of estimated water quality
valuecol	string, name of column with water quality values
datecol	string, name of column with dates
var	string, aggregator (e.g. mean, max)
monthlybias,	calculates annual average using monthly averages (in case of differing numbers of samples for each month)

Value

summary of the Theil-Sen estimator

Examples

data(estimatedrecord)
annualtrend.ts(record=estimatedrecord,valuecol="EstChlValue",
datecol="ImageDate",var="mean",monthlybias="TRUE")

RSAlgaeR documentation built on May 2, 2019, 3:48 p.m.