VegetationDelineation Task
This task performs raster classification based on Vegetation Delineation.
Example
; Start the application
e = ENVI()
; Open an input file
File = Filepath('AVIRISReflectanceSubset.dat', Subdir=['data', 'hyperspectral'], $
Root_Dir=e.Root_Dir)
Raster = e.OpenRaster(File)
; Get the task from the catalog of ENVITasks
Task = ENVITask('VegetationDelineation')
; Define inputs
Task.INDEX = 'Normalized Difference Vegetation Index'
Task.INPUT_RASTER = Raster
; Run the task
Task.Execute
; Add the output to the Data Manager
DataColl.Add, Task.OUTPUT_RASTER
; Display the result
View = e.GetView()
Layer = View.CreateLayer(Task.OUTPUT_RASTER)
Syntax
Result = ENVITask('VegetationDelineation')
Input properties (Set, Get): CLASS_COLORS, CLASS_NAMES, CLASS_RANGES, INDEX, INPUT_RASTER, OUTPUT_RASTER_URI
Output properties (Get only): OUTPUT_RASTER
Properties marked as "Set" are those that you can set to specific values. You can also retrieve their current values any time. Properties marked as "Get" are those whose values you can retrieve but not set.
Methods
This task inherits the following methods from ENVITask:
Properties
This task inherits the following properties from ENVITask:
This task also contains the following properties:
CLASS_COLORS (optional)
Specify a (3,n) byte array with the RGB colors for the given ranges, where n is the number of classes. Use this property in conjunction with CLASS_RANGES.
The default value is [[160,82,45], [255,255,0], [0,238,0], [0,139,0]].
CLASS_NAMES (optional)
Specify an array with the names for the given ranges. The default value is ["No Veg", "Sparse Veg", "Moderate Veg", "Dense Veg"].
CLASS_RANGES (optional)
Specify a (2,n) array of color slice ranges, where n is the number of classes. In each array element, specify the minimum and maximum data value for the class.
The default value is [[-1, 0.25], [0.25, 0.5], [0.5, 0.7], [0.7, 1]].
INDEX (optional)
Specify a string representing the pre-defined spectral index to apply to the input raster. The default value is Normalized Difference Vegetation Index.
Atmospherically Resistant Vegetation IndexGreen Normalized Difference Vegetation IndexModified Normalized Difference Water IndexNon-Linear IndexNormalized Burn RatioNormalized Burn Ratio Thermal 1Normalized Difference Built-Up IndexNormalized Difference Infrared IndexNormalized Difference Lignin IndexNormalized Difference Mud IndexNormalized Difference Nitrogen IndexNormalized Difference Snow IndexNormalized Difference Vegetation IndexNormalized Difference Water IndexNormalized Multiband Drought IndexPhotochemical Reflectance IndexModified Red Edge Normalized Difference Vegetation IndexWide Dynamic Range Vegetation IndexWorldView Built-Up IndexWorldView Improved Vegetative IndexWorldView Non-Homogeneous Feature DifferenceWorldView Soil IndexWorldView Water Index
INPUT_RASTER (required)
Specify a raster from which to generate a spectral index raster.
OUTPUT_RASTER
This is a reference to the output raster of filetype ENVI.
OUTPUT_RASTER_URI (optional)
Specify a string with the fully qualified filename and path of the associated OUTPUT_RASTER. If you do not specify this property, or set it to an exclamation symbol (!), a temporary file will be created.
Version History
|
ENVI 5.6.3 |
Introduced |
API Version
4.2
See Also
ENVITask, AgriculturalStressClassification Task, FireFuelClassification Task, ForestHealthClassification Task