Momocs (version 1.1.6)

coo_scalex: Shrinks coordinates in one direction

Description

coo_scalex applies a scaling parallel to the x-axis to a matrix of (x; y) or a list of coordinates or any Coo object, coo_scaley does it parallel to the y-axis.

Usage

coo_scalex(coo, k = 1)
coo_scaley(coo, k = 1)

Arguments

coo

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

k

numeric scaling factor

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_jitter, coo_left, coo_nb, coo_perimcum, coo_perimpts, coo_perim, coo_rev, coo_right, coo_rotatecenter, coo_rotate, 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_up, is_clockwise, is_closed, is_equallyspacedradii Other scaling functions: coo_scale, coo_template

Examples

coo <- shapes[11] %>% coo_template()
coo_plot(coo, xlim=c(-1, 1))
coo %>% coo_scalex(1.5) %>% coo_draw(border="blue")
coo %>% coo_scaley(1.5) %>% coo_draw(border="red")
coo %>% coo_scalex(0.5) %>% coo_draw(border="blue", lty=2)
coo %>% coo_scaley(0.5) %>% coo_draw(border="red", lty=2)