scacum: Cummulative-scaled sums
In BIOdry: Multilevel Modeling of Dendroclimatical Fluctuations

Description Usage Arguments Details Value Author(s) Examples

This function computes cummulative and scaled sums of time-series replicates.

1	scacum(x, sc.c = NA, rf.t = NA)

`x`	`numeric` vector of time-series replicates with names of the vector being time units.
`sc.c`	`numeric` constant. Scaling constant. If `NA` then the computed cumulative sums are not scaled.
`rf.t`	`NA`, or `numeric` constant. Reference time of the scaling constant. If `NA` then maximum time in vector-name range is used.

Cummulative sums of time-series replicates (e.g. tree-ring widths) are scaled around reference values (e.g. tree radii).

data frame with the original vector, and its scaled-cummulative sums.

Wilson Lara <wilarhen@gmail.com>, Felipe Bravo <fbravo@pvs.uva.es>

x <- c(0.79,0.32,0.53,0.43,0.18)
names(x) <- 1948:1952
scacum(x,sc.c = 4,rf.t = 1951)

##If sc.c = NA then cummulative values are scaled arround
##max(cumsum(x)):
max(cumsum(x))
scacum(x,NA,1951)