coo_left: Retains coordinates with negative x-coordinates

In Momocs: Morphometrics using R

Retains coordinates with negative x-coordinates

Description

Useful when shapes are aligned along the y-axis (e.g. because of a bilateral symmetry) and when one wants to retain just the lower side.

Usage

coo_left(coo, slidegap = FALSE)

Arguments

coo	matrix of ⁠(x; y)⁠ coordinates or any Coo object.
slidegap	logical whether to apply coo_slidegap after coo_left

Value

a matrix of (x; y) coordinates or a Coo object (Out are returned as Opn)

Note

When shapes are "sliced" along the y-axis, it usually results on open curves and thus to huge/artefactual gaps between points neighboring this axis. This is usually solved with coo_slidegap. See examples there.

Also, when apply a coo_left/right/up/down on an Out object, you then obtain an Opn object, which is done automatically.

See Also

Other opening functions: coo_down(), coo_right(), coo_up()

Other coo_ utilities: coo_aligncalliper(), coo_alignminradius(), coo_alignxax(), coo_align(), coo_baseline(), coo_bookstein(), coo_boundingbox(), coo_calliper(), coo_centdist(), coo_center(), coo_centpos(), coo_close(), coo_down(), coo_dxy(), coo_extract(), coo_flipx(), coo_force2close(), coo_interpolate(), coo_is_closed(), coo_jitter(), coo_likely_clockwise(), coo_nb(), coo_perim(), coo_range(), coo_rev(), coo_right(), coo_rotatecenter(), coo_rotate(), coo_sample_prop(), coo_samplerr(), coo_sample(), coo_scale(), coo_shearx(), coo_slice(), coo_slidedirection(), coo_slidegap(), coo_slide(), coo_smoothcurve(), coo_smooth(), coo_template(), coo_trans(), coo_trimbottom(), coo_trimtop(), coo_trim(), coo_untiltx(), coo_up(), is_equallyspacedradii()

Examples

b <- coo_center(bot[1])
coo_plot(b)
coo_draw(coo_left(b), border='red')

Momocs documentation built on Nov. 13, 2023, 5:07 p.m.