ENVISpectralLibrary

This is a reference to an ENVISpectralLibrary object.

Example

; Start the application

e = ENVI(/HEADLESS)

; Open a spectral library from the distribution

specLibFile = FILEPATH('veg_1dry.sli', ROOT_DIR=e.ROOT_DIR, $

  SUBDIR=['resource', 'speclib', 'veg_lib'])

specLib = ENVISpectralLibrary(specLibFile)

; print the spectra names

Print, specLib.SPECTRA_NAMES

Syntax

Result = ENVISpectralLibrary(URI [, ERROR=variable] [, Properties=value])

Return Value

This function returns a reference to an ENVISpectralLibrary object.

Arguments

URI

Specify a fully qualified path and filename to a spectral library file (.sli).

Methods

Dehydrate

GetSpectrum

Hydrate

Keywords

ERROR

Set this keyword to a named variable that will contain any error message issued during execution of this routine. If no error occurs, the ERROR variable will be set to a null string (''). If an error occurs and the routine is a function, then the function result will be undefined.

When this keyword is not set and an error occurs, ENVI returns to the caller and execution halts. In this case, the error message is contained within !ERROR_STATE and can be caught using IDL's CATCH routine. See IDL Help for more information on !ERROR_STATE and CATCH.

See Manage Errors for more information on error handling in ENVI programming.

Properties

Properties marked as (Get) can be retrieved, but not set.

DESCRIPTION (Get)

A description of the library.

SPECTRA_NAMES (Get)

A string array containing the spectra names in the library.

Version History

ENVI 5.3	Introduced
ENVI 5.3, Service Pack 1	Added Dehydrate method
ENVI 5.4	Added Hydrate method

API Version

3.3