This task creates polygon regions of interest (ROIs) from a classification raster.
Example
e = ENVI()
File = Filepath('qb_boulder_msi', Subdir=['data'], $
Root_Dir=e.Root_Dir)
Raster = e.OpenRaster(File)
ClassTask = ENVITask('ISODATAClassification')
ClassTask.INPUT_RASTER = Raster
ClassTask.Execute
Task = ENVITask('ClassificationToPolygonROI')
Task.INPUT_RASTER = ClassTask.OUTPUT_RASTER
Task.Execute
View = e.GetView()
Layer = view.CreateLayer(Raster)
rois = Task.OUTPUT_ROI
roiLayers = OBJARR(N_ELEMENTS(rois))
FOR i=0, N_ELEMENTS(rois)-1 DO roiLayers[i] = layer.AddROI(rois[i])
Syntax
Result = ENVITask('ClassificationToPolygonROI')
Input parameters (Set, Get): INPUT_RASTER, OUTPUT_ROI_URI
Output parameters (Get only): OUTPUT_ROI
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 (optional)
Specify a classification raster.
OUTPUT_ROI_URI (optional)
Specify a string with the fully qualified path and filename for OUTPUT_ROI.
Output Parameters
OUTPUT_ROI
This is a reference to the output ROI.
Methods
Execute
Parameter
ParameterNames
Properties
DESCRIPTION
DISPLAY_NAME
NAME
REVISION
TAGS
Version History
See Also
ENVITask, ClassificationToPixelROI Task, ClassificationToShapefile Task, ROIToClassification Task