Extract coordinates from a shape

Extract ids coordinates from a single shape or a Coo object.

Usage

coo_extract(coo, ids)

Arguments

coo

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

ids

integer, the ids of points to sample.

Value

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

Details

It probably only make sense for Coo objects with the same number of coordinates and them being homologous, typically on Ldk.

See also

Other sampling functions: coo_interpolate(), coo_sample_prop(), coo_samplerr(), coo_sample()

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_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_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

coo_extract(bot[1], c(3, 9, 12)) # or :
#>      [,1] [,2]
#> [1,]   40  529
#> [2,]   57  414
#> [3,]   63  361
bot[1] %>% coo_extract(c(3, 9, 12))
#>      [,1] [,2]
#> [1,]   40  529
#> [2,]   57  414
#> [3,]   63  361