univariate ASH

Computes univariate averaged shifted histogram (polynomial kernel)

Keywords
nonparametric
Usage
ash1(bins, m, kopt)
Arguments
bins
(input list) $nc=integer vector of bin counts and $ab=bin interval
m
(input) optional integer smoothing parameter; default=5.
kopt
(input) vector of length 2 specifying the kernel, which is proportional to $( 1 - abs(i/m)^kopt(1) )i^kopt(2)$; (2,2)=biweight (default); (0,0)=uniform; (1,0)=triangle; (2,1)=Epanechnikov; (2,3)=triweight.
Value

returns structure suitable for input to plot dd
x=t
vector of bin center locations
y=f
vector of ash estimates
ier
0=normal exit; 1=estimate nonzero outside interval ab

See Also

bin1

Aliases
  • ash1
Examples
x <- rnorm(100)         # data
f <- ash1(bin1(x,nbin=50),5) # compute ash estimate
plot( f , type="l" )    # line plot of estimate
Documentation reproduced from package ash, version 1.0-15, License: GPL (>= 2)

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