get.first.mode: Get First Peak

In neuroconductor-devel-releases/WhiteStripe: White Matter Normalization for Magnetic Resonance Images using WhiteStripe

Description

This function grabs the first peak or shoulder.

Usage

get.first.mode(x, y, rare.prop = 1/5, verbose = TRUE,
  remove.tail = TRUE, ...)

Arguments

x	values of midpoints from hist
y	values of counts from hist
rare.prop	Proportion used to remove rare intensity tail
verbose	print diagnostic output
remove.tail	Remove rare intensity tail
...	arguments to be passed to smooth_hist

Value

Value of x that is the first peak

Examples

data(t1.voi.hist)
system.time({
y = t1.voi.hist$counts
x = t1.voi.hist$mids
x = x[!is.na(y)];
y = y[!is.na(y)]
# 20 used for speed of example
nawm_peak = get.first.mode(x, y, k=20)
plot(t1.voi.hist, border="red")
abline(v=nawm_peak)
})
 

neuroconductor-devel-releases/WhiteStripe documentation built on May 6, 2020, 3:21 p.m.