Bandwidth estimators for densities, used in the bandwidth
argument
to density functions (e.g. density_bounded()
, density_unbounded()
).
Supports automatic partial function application.
bandwidth_nrd0(x, ...)
bandwidth_nrd(x, ...)
bandwidth_ucv(x, ...)
bandwidth_bcv(x, ...)
bandwidth_SJ(x, ...)
bandwidth_dpi(x, ...)
A numeric vector giving a sample.
Arguments passed on to stats::bw.SJ
nb
number of bins to use.
lower,upper
range over which to minimize. The default is
almost always satisfactory. hmax
is calculated internally
from a normal reference bandwidth.
method
either "ste"
("solve-the-equation") or
"dpi"
("direct plug-in"). Can be abbreviated.
tol
for method "ste"
, the convergence tolerance for
uniroot
. The default leads to bandwidth estimates
with only slightly more than one digit accuracy, which is sufficient
for practical density estimation, but possibly not for theoretical
simulation studies.
A single number giving the bandwidth
These are loose wrappers around the corresponding bw.
-prefixed functions
in stats. See, for example, bw.SJ()
.
bandwidth_dpi()
, which is the default bandwidth estimator in ggdist,
is the Sheather-Jones direct plug-in estimator, i.e. bw.SJ(..., method = "dpi")
.