Get length

Calculate length along the major inertia axis.

Usage

get_length(x, ..., .cols = NULL)

Arguments

x

A matrix (nx2), list of matrices, or tibble with coo columns.

...

Additional arguments (reserved for future use).

.cols

Column name(s) to process when x is a tibble. If NULL, automatically detects columns containing coo objects.

Value

• If x is a single matrix: returns a numeric scalar

• If x is a list: returns a numeric vector

• If x is a tibble: returns a numeric vector extracted from coo column

Details

Length is the range along the major inertia axis (largest variance direction).

See also

get_width(), get_lw(), get_elongation()

Examples

get_length(shapes$cat)
#>   length 
#> 229.9564 

# Use in measure()
bot %>% measure("length")
#> # A tibble: 40 × 4
#>    coo       type   dummy coo_length
#>    <out>     <fct>  <fct>      <dbl>
#>  1 (138 x 2) whisky a          1088.
#>  2 (168 x 2) whisky a           994.
#>  3 (189 x 2) whisky a           644.
#>  4 (129 x 2) whisky a           806.
#>  5 (152 x 2) whisky a           886.
#>  6 (161 x 2) whisky a           606.
#>  7 (124 x 2) whisky a           865.
#>  8 (126 x 2) whisky a           765.
#>  9 (183 x 2) whisky a           742.
#> 10 (193 x 2) whisky a          1048.
#> # ℹ 30 more rows