I am trying to do the Mann-Kendall, Sen's Slope and Regional Kendall Test
(rkt package) over a 30 year time period spatially.
I have created a raster stack but am unable to figure out how to use the
calc function to do rkt.
This is what I have...
#create vector of years for tests
Years <- c(1978:2007)
#create stack of rasters
ThirtyYrStack
<-stack(Map1978,Map1979,Map1980,Map1981,Map1982,Map1983,Map1984,Map1985,Map1986,Map1987,Map1988,Map1989,Map1990,Map1991,Map1992,Map1993,Map1994,Map1995,Map1996,Map1997,Map1998,Map1999,Map2000,Map2001,Map2002,Map2003,Map2004,Map2005,Map2006,Map2007)
##create function of rkt package
MK_test <- function(x,y){rkt(x,y)}
ThirtyYr.mk <-calc(ThirtyYrStack,MK_test(Years,ThirtyYrStack))
I guess I am confused on what to pass into calc. I don't think the problem
is with the stack itself
Alyssa
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