This function allows ENVI data import.
Usage
read_envi(
file,
header = NULL,
spectral_smooth = F,
sigma = c(1, 1, 1),
metadata = list(file_name = basename(file), user_name = NULL, contact_info = NULL,
organization = NULL, citation = NULL, spectrum_type = NULL, spectrum_identity = NULL,
material_form = NULL, material_phase = NULL, material_producer = NULL,
material_purity = NULL, material_quality = NULL, material_color = NULL,
material_other = NULL, cas_number = NULL, instrument_used = NULL,
instrument_accessories = NULL, instrument_mode = NULL, spectral_resolution = NULL,
laser_light_used = NULL, number_of_accumulations = NULL,
total_acquisition_time_s = NULL, data_processing_procedure = NULL,
level_of_confidence_in_identification = NULL, other_info = NULL, license =
"CC BY-NC"),
...
)Arguments
- file
name of the binary file.
- header
name of the ASCII header file. If
NULL, the name of the header file is guessed by looking for a second file with the same basename asfilebut with .hdr extension.- spectral_smooth
logical value determines whether spectral smoothing will be performed.
- sigma
if
spectral_smooththen this option applies the 3d standard deviations for thegaussianSmoothfunction from themmandpackage to describe how spectral smoothing occurs on each dimension. The first two dimensions are x and y, the third is the wavenumbers.- metadata
a named list of the metadata; see
as_OpenSpecy()for details.- ...
further arguments passed to the submethods.
Details
ENVI data usually consists of two files, an ASCII header and a binary data
file. The header contains all information necessary for correctly reading
the binary file via read.ENVI().
See also
read_spec() for reading .y(a)ml, .json, or .rds (OpenSpecy)
files;
read_text(), read_asp(), read_spa(),
read_spc(), and read_jdx() for text files, .asp,
.spa, .spa, .spc, and .jdx formats, respectively;
read_opus() for reading .0 (OPUS) files;
read_zip() and read_any() for wrapper functions;
read.ENVI()
gaussianSmooth()