Set new active group

active_group(x) <- value

# S3 method for sftrack
active_group(x) <- value

# S3 method for sftraj
active_group(x) <- value

# S3 method for c_grouping
active_group(x) <- value

Arguments

x

sftrack/sftraj/c_grouping/s_group object

value

character vector of the grouping names to make active