The default indexing-function for the mbte-package

A subsignal is defined as a sequence of nonzero values in x. Therefore, elements near 0 are discarded and only the remaining nonzero elements of x are kept.

mbte_default_indexer(x, ...)

Arguments

x	A numeric vector (signal-values - see tbl_mbte).
...	Additional arguments (currently ignored)

Examples

# create a dummy vector, simulating measurement data
# NOTE: the values of `x` are the same as their index
x <- c(1:4, 0, 6:8, 0, 0, 11:15)
x
#>  [1]  1  2  3  4  0  6  7  8  0  0 11 12 13 14 15

# NOTE: start indices: c(1, 6, 11)
# end indices: c(4, 8, 15)
indices <- mbte_default_indexer(x)
indices
#> $start
#> [1]  1  6 11
#> 
#> $end
#> [1]  4  8 15
#> 

# show first subsignal:
x[indices$start[1]:indices$end[1]] # c(1, 2, 3, 4)
#> [1] 1 2 3 4