Rotates coordinates

Rotates the coordinates by a 'theta' angle (in radians) in the trigonometric direction (anti-clockwise). If not provided, assumed to be the centroid size. It involves three steps: centering from current position, dividing coordinates by 'scale', translating to the original position.

Usage

coo_rotate(coo, theta = 0)

Arguments

coo

either a matrix of (x; y) coordinates, or any Coo object.

theta

numericthe angle (in radians) to rotate shapes.

Value

a matrix of (x; y) coordinates, or a Coo object.

See also

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_left(), coo_likely_clockwise(), coo_nb(), coo_perim(), coo_range(), coo_rev(), coo_right(), coo_rotatecenter(), 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()

Other rotation functions: coo_rotatecenter()

Examples

coo_plot(bot[1])

coo_plot(coo_rotate(bot[1], pi/2))


# on Coo
b <- bot %>% slice(1:5) # for speed sake
stack(b)

stack(coo_rotate(b, pi/2))