guess.wavelength {hyperSpec}

guess wavelengths from character vector

Description

character vectors used for names (e.g. colnames for matrices or data.frames) are often treated by make.names or similar functions that produce suitable names (e.g. by prepending "X" to numbers.). Such names cannot be directly converted to numeric.

Usage

guess.wavelength(X)

Arguments

X

character with numbers hidden inside

Details

guess.wavlength tries to extract numbers from X which may be surrounded by such "protecting" characters.

Value

numeric

Examples

tmp <- data.frame(flu [[,, 400 ~ 410]])
(wl <- colnames (tmp))
guess.wavelength (wl)