K_Njoroge LUKE2019-ENG

hakimabdi / MKtrend.R

Last active January 7, 2025 07:27

This function performs a Mann-Kendall trend test with associated p-values on a time seris of gridded satellite data

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	# title : Perform a Mann-Kendall trend test of satellite image time series
	# purpose : Mann-Kendall test of monotonic trend and associated statistical significance
	# author : Abdulhakim Abdi (@HakimAbdi)
	# input : Raster stack/brick comprising a time series of observations
	# output : Raster object of monotoic trend (Kendall's tau), significance or both (i.e. brick)
	# data : Test data: https://1drv.ms/u/s!AsHsKb_qtbkwg4ti8pJCxvUer9rMqg?e=BGcH1K
	# notes : Depending on the time series, it is might be useful prewhiten the data to remove serial correlation
	# : prior to extracting the trend. See blog post on www.hakimabdi.com for more information.
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