Kendall (version 1.0)

SeasonalMannKendall: Mann-Kendall trend test for monthly environmental time series

Usage

SeasonalMannKendall(x)

Arguments

x
a vector or a time series comprised of consecutive monthly values

Value

  • A list with class Kendall.
  • tauKendall's tau statistic
  • sltwo-sided p-value
  • SKendall Score
  • DDenominator, tau=S/D
  • varSvariance of S
  • Generic function print.Kendall and summary.Kendall are provided.

Details

Hirst et al. (1982) suggested this test for monthly water quality time series. The test is also discussed by Hipel and McLeod (2005). The score is computed separately for each month.

References

Hirsch, R.M., Slack, J.R. and Smith, R.A. (1982), Techniques for trend assessment for monthly water quality data, Water Resources Research 18, 107-121. Hipel, K.W. and McLeod, A.I., (2005). Time Series Modelling of Water Resources and Environmental Systems. Electronic reprint of our book orginally published in 1994. http://www.stats.uwo.ca/faculty/aim/1994Book/.

See Also

MannKendall

Examples

Run this code
#test for monotonic trend in monthly average river height data
#for the Rio Negro at Manaus. This data is included in the 
#package boot.
library(boot) 
data(manaus)
SeasonalMannKendall(manaus)

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