Test if object is an n-dimensional measure list
Examples
# Create and test a measure_nd_list
meas1 <- new_measure_nd_tbl(
location_1 = 1:5,
location_2 = rep(1, 5),
value = rnorm(5)
)
ml <- new_measure_nd_list(list(meas1))
is_measure_nd_list(ml) # TRUE
#> [1] TRUE