QuerySpectralLibrary Task
This task queries a spectral library, returning the names of all spectra in the library.
Example
; Start the application
e = ENVI(/HEADLESS)
; Open a spectral library from the distribution
specLibFile = FILEPATH('veg_2grn.sli', ROOT_DIR=e.ROOT_DIR, $
SUBDIR=['resource', 'speclib', 'veg_lib'])
specLib = ENVISpectralLibrary(specLibFile)
; Get the task from the catalog of ENVITasks
Task = ENVITask('QuerySpectralLibrary')
; Define inputs
Task.INPUT_SPECTRAL_LIBRARY = specLib
; Run the task
Task.Execute
; Print the first spectrum name
PRINT, Task.SPECTRA_NAMES[0]
IDL prints:
Arroyo Willow
Syntax
Result = ENVITask('QuerySpectralLibrary')
Input parameters (Set, Get): INPUT_SPECTRAL_LIBRARY
Output parameters (Get only): SPECTRA_NAMES
Parameters marked as "Set" are those that you can set to specific values. You can also retrieve their current values any time. Parameters marked as "Get" are those whose values you can retrieve but not set.
Input Parameters
INPUT_SPECTRAL_LIBRARY (required)
Specify a spectral library from which to retrieve spectra names.
Output Parameters
SPECTRA_NAMES
A string array containing all spectra names for the input spectral library.
Methods
Properties
Version History
|
ENVI 5.3 |
Introduced |
See Also
ENVITask, ENVISpectralLibrary, ResampleSpectrum Task, GetSpectrumFromLibrary Task