ROIToClassification Task

This task creates a classification image from regions of interest (ROIs).

Example

; Start the application

e = ENVI()

; Open an input file

File = Filepath('qb_boulder_msi', Subdir=['data'], $

  Root_Dir=e.Root_Dir)

Raster = e.OpenRaster(File)

; Open an ROI

roifile = Filepath('qb_boulder_roi.xml', ROOT_DIR=e.Root_Dir, $

  SUBDIRECTORY=['data'])

Rois = e.OpenRoi(roifile)

; Get the task from the catalog of ENVITasks

Task = ENVITask('ROIToClassification')

; Define inputs

Task.INPUT_ROI = [Rois[0], Rois[1],Rois[2]]

Task.INPUT_RASTER = Raster

; Run the task

Task.Execute

; Add the output to the Data Manager

e.Data.Add, Task.OUTPUT_RASTER

; Display the result

View = e.GetView()

Layer = View.CreateLayer(Task.OUTPUT_RASTER)

Syntax

Result = ENVITask('ROIToClassification')

Input parameters (Set, Get): INPUT_RASTER, INPUT_ROI, OUTPUT_RASTER_URI

Output parameters (Get only): OUTPUT_RASTER

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_RASTER (required)

Specify the input raster to apply ROIs to generate a classification image.

INPUT_ROI (required)

Specify a single or an array of ROI to create the classification image from.

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 parameter, or set it to an exclamation symbol (!), ENVI creates a temporary file.
If you set it to the hash symbol (#), ENVI creates a file in the temporary directory, but this file will not be deleted when ENVI closes.