Get First Peak

Source: R/get.largest.mode.R

This function grabs the first peak or shoulder.

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)
})
#> Smoothing Histogram
#> Smoothing Derivative

#>    user  system elapsed 
#>   0.439   0.013   0.609