smooth.spectra: Smooth spectra file with Savitsky-Golay smoothing filter....

In serbinsh/R-FieldSpectra: Functions for processing field spectroscopy data. Current supported instruments include ADS FieldSpec, Spectral Evolution, and Spectra Vista Corporation

Smooth spectra file with Savitsky-Golay smoothing filter. Works with either a single spectrum or array of spectral observations in row-major format.

Description

Smooth spectra file with Savitsky-Golay smoothing filter. Works with either a single spectrum or array of spectral observations in row-major format.

Usage

smooth.spectra(
  file.dir = NULL,
  input.file = NULL,
  out.dir = NULL,
  out.filename = NULL,
  header = TRUE,
  p = NULL,
  n = NULL,
  length = "full",
  file.ext = ".csv"
)

Arguments

file.dir	Directory of spectra files to apply sgolay smoothing filter.
input.file	Spectra file to apply sgolay smoothing filter. If not set then all files in file.dir are processed.
out.dir	Output directory for smoothed spectra files. If not set then processed spectra will be output to file.dir
out.filename	Output filename for processed spectra file. If not set then the original filename(s) will be modified with the .sg suffix.
header	logical. Does the spectra file(s) have a header line? Default = TRUE
p	SG filter order. Default 1.
n	SG filter length. Needs to be an odd value. Default 21
length	Apply sgolay smoothing filter to the entire (default=full) or subset of the spectrum. Define subset limits as (wavelength1,wavelength2), e.g. (2000,2500) in nanometers [NOT YET IMPLEMENTED]
file.ext	File extension for spectra files. Default '.csv'

Author(s)

Shawn P. Serbin

Examples

## Not run: 
smooth.spectra()
smooth.spectra(file.dir=file.dir,input.file=input.file,out.dir=out.dir,out.filename=out.filename,
                header=TRUE,p=1,n=21,length=full)

## End(Not run)

serbinsh/R-FieldSpectra documentation built on March 31, 2022, 10:08 p.m.