ash1 {ash} | R Documentation |
univariate ASH
Description
Computes univariate averaged shifted histogram (polynomial kernel)
Usage
ash1(bins, m, kopt)
Arguments
bins |
(input list) $nc =integer vector of bin counts and $ab =bin interval
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m |
(input) optional integer smoothing parameter; default=5.
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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.
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Value
returns structure suitable for input to plot
dd
x=t |
vector of bin center locations
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y=f |
vector of ash estimates
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ier |
0=normal exit; 1=estimate nonzero outside interval ab
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See Also
bin1
Examples
x <- rnorm(100) # data
f <- ash1(bin1(x,nbin=50),5) # compute ash estimate
plot( f , type="l" ) # line plot of estimate