extract.metadata: Extract metadata for each spectra sample. Works on a single...

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

Extract metadata for each spectra sample. Works on a single spectra or a directory.

Description

Extract metadata for each spectra sample. Works on a single spectra or a directory.

Usage

extract.metadata(
  file.dir = NULL,
  out.dir = NULL,
  instrument = NULL,
  spec.file.ext = NULL,
  output.file.ext = ".csv",
  tz = NULL,
  settings.file = NULL
)

Arguments

file.dir	File directory or filename of single spectra for processing
out.dir	Output directory for metadata information file
instrument	What instrument was used to collect spectra. Current options: ASD, SE, SVC
spec.file.ext	[Optional] Input spectra file extension. E.g. .asd (ASD), .sed (Spectral Evolution), or .sig (Spectra Vista). Default for ASD instruments is .asd. Default for Spectral Evolution instruments is .sed. Default for Spectra Vista is .sig
output.file.ext	[Optional] Output file extension of metadata information file. Default .csv
tz	[Optional] Set the timezone of the spectra file collection. Used to covert spectra collection time to UTC. If unused it is assumed that the correct timezone is the current system timezone.
settings.file	[Optional] Spectral settings file

Value

output Returns a dataframe of spectral metadata information

Author(s)

Shawn P. Serbin

Examples

# ASD
file <- system.file("extdata/PM01_TIAM_B_LC_REFL00005.asd",package="FieldSpectra")
output <- extract.metadata(file,instrument="ASD")

# Spectral Evolution
file <- system.file("extdata/cvars_grape_leaf1_lc_rg_01236.sed",package="FieldSpectra")
output <- extract.metadata(file,instrument="SE")

# Spectra Vista
file <- system.file("extdata/gr070214_003.sig",package="FieldSpectra")
output <- extract.metadata(file,instrument="SVC")

file <- system.file("extdata/BEO_CakeEater_Pheno_026_resamp.sig",package="FieldSpectra")
output <- extract.metadata(file,instrument="SVC")

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