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ENVI

ENVIPixelStatisticsTask

ENVIPixelStatisticsTask

This task computes statistics for each pixel in a raster. It creates an image where each band represents a different statistic computed from an input image.

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)
 
; Get the task from the catalog of ENVITasks
Task = ENVITask('PixelStatistics')
 
; Define inputs
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('PixelStatistics')

Input properties (Set, Get): INPUT_RASTER, OUTPUT_RASTER_URI, PRODUCTS

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:

AddParameter

Execute

Parameter

ParameterNames

RemoveParameter

Properties


This task inherits the following properties from ENVITask:

COMMUTE_ON_DOWNSAMPLE

COMMUTE_ON_SUBSET

DESCRIPTION

DISPLAY_NAME

NAME

REVISION

TAGS

This task also contains the following properties:

INPUT_RASTER (required)

Specify the raster on which to compute pixel statistics.

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.

PRODUCTS (optional)

Specify a string array with the products to compute. The default behavior is to compute all available statistics. The following are the valid strings to use:

Min
Max
Mean
Standard Deviation
Mean Absolute Deviation
Variance
Skewness
Kurtosis
Sum
Sum of Squares

Version History


ENVI 5.5, Service Pack 2

Introduced

API Version


3.3

See Also


ENVITask, ENVITask::Parameter, ENVIRasterStatisticsTask, ENVIROIStatisticsTask, ENVITrainingClassificationStatisticsTask, ENVIRasterHistogramTask



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