coo_eccentricityeigen uses the ratio of
the eigen values (inertia axes of coordinates).
coo_eccentricityboundingbox uses the width/length ratio (see coo_lw).
Usage
coo_eccentricityeigen(coo)
# S3 method for default
coo_eccentricityeigen(coo)
# S3 method for Coo
coo_eccentricityeigen(coo)
coo_eccentricityboundingbox(coo)
# S3 method for default
coo_eccentricityboundingbox(coo)
# S3 method for Coo
coo_eccentricityboundingbox(coo)Source
Rosin PL. 2005. Computing global shape measures. Handbook of Pattern Recognition and Computer Vision. 177-196.
See also
coo_eccentricityboundingbox
Other coo_ descriptors:
coo_angle_edges(),
coo_angle_tangent(),
coo_area(),
coo_boundingbox(),
coo_chull(),
coo_circularity(),
coo_convexity(),
coo_elongation(),
coo_length(),
coo_lw(),
coo_rectangularity(),
coo_rectilinearity(),
coo_scalars(),
coo_solidity(),
coo_tac(),
coo_width()
Examples
# coo_eccentricityeigen
bot[1] %>% coo_eccentricityeigen()
#> [1] 0.09292547
bot %>%
slice(1:3) %>% # for speed sake only
coo_eccentricityeigen()
#> $brahma
#> [1] 0.09292547
#>
#> $caney
#> [1] 0.100634
#>
#> $chimay
#> [1] 0.1813198
#>
# coo_eccentricityboundingbox
bot[1] %>% coo_eccentricityboundingbox()
#> [1] 0.2555899
bot %>%
slice(1:3) %>% # for speed sake only
coo_eccentricityboundingbox()
#> $brahma
#> [1] 0.2555899
#>
#> $caney
#> [1] 0.2617262
#>
#> $chimay
#> [1] 0.3744498
#>