coo_tac {Momocs}

Calculates the total absolute curvature of a shape

Description

Calculated using the sum of the absolute value of the second derivative of the smooth.spline prediction for each defined point.

Usage

coo_tac(coo)

Arguments

coo

a matrix of (x; y) coordinates or any Coo

Value

numeric for a single shape and for Coo

Source

Siobhan Braybrook.

See Also

Other coo_ descriptors: coo_angle_edges(), coo_angle_tangent(), coo_area(), coo_boundingbox(), coo_chull(), coo_circularity(), coo_convexity(), coo_eccentricity, coo_elongation(), coo_length(), coo_lw(), coo_rectangularity(), coo_rectilinearity(), coo_scalars(), coo_solidity(), coo_width()

Examples

coo_tac(bot[1])

bot %>%
    slice(1:3) %>%  # for speed sake only
    coo_tac