| is_equallyspacedradii {Momocs} | R Documentation |
Tests if coordinates likely have equally spaced radii
Description
Returns TRUE/FALSE whether the sd of angles between all successive
radii is below/above thesh
Usage
is_equallyspacedradii(coo, thres)
Arguments
coo |
|
thres |
numeric a threshold (arbitrarily |
Value
a single or a vector of logical. If NA are returned,
some coordinates are likely identical, at least for x or y.
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_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()
Examples
bot[1] %>% is_equallyspacedradii
bot[1] %>% coo_samplerr(36) %>% is_equallyspacedradii
# higher tolerance but wrong
bot[1] %>% coo_samplerr(36) %>% is_equallyspacedradii(thres=5*2*pi/360)
# coo_interpolate is a better option
bot[1] %>% coo_interpolate(1200) %>% coo_samplerr(36) %>% is_equallyspacedradii
# Coo method
bot %>% coo_interpolate(360) %>% coo_samplerr(36) %>% is_equallyspacedradii