shift_pickr: Peak-Picking

In kylebario/concentr8r: MRS Data Preprocessing and Normalisation

Peak-Picking

Description

Peak-Picking

Usage

shift_pickr(X, ppm = NULL, sh = c(3, 3.1), pm = 0.005)

Arguments

X	The X array or matrix you want to pick the peak of
ppm	The column matched ppm variable to your X
sh	The chemical shift region you want to search
pm	The amount you want to add to each side of the peak

Value

The ppm variables that match the peak you are searching for

See Also

Other estimation: get_idx(), lw(), noise()

Examples

data(X)
idx <- shift_pickr(X[1,], ppm, sh = c(4,4.1), pm = 0.005)
idx1 <- shift_pickr(X[2,], ppm, sh = c(4,4.1), pm = 0.01)
plot(ppm[idx], X[1,idx], main = "Creatinine Peak 4.05", type = 'l', xlim = c(4.05, 4.07))
points(ppm[idx1], X[2,idx1], type = 'l', col = 'red')

kylebario/concentr8r documentation built on Nov. 9, 2022, 12:47 a.m.