MappingResampleRaster Task

This task resamples a raster to different dimensions using column and row mapping.

The virtual raster associated with this task is ENVIResampleRaster.

Syntax

Result = ENVITask('MappingResampleRaster')

Input properties (Set, Get): COLUMN_MAPPING, INPUT_RASTER, OUTPUT_RASTER_URI, RESAMPLING, ROW_MAPPING

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:

COLUMN_MAPPING (required)

Specify an array of interpolation coordinates for each column of pixels. This array must be the same size as the number of columns in INPUT_RASTER. This parameter can be combined with ROW_MAPPING to define a regular grid of interpolation coordinates.

INPUT_RASTER (required)

Specify the raster to resample.

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 to export the associated OUTPUT_RASTER.

• If you set this property to an asterisk symbol (*), the output raster will be virtual and not written to disk.
• If you do not specify this property, or set it to an exclamation symbol (!), a temporary file will be created.

RESAMPLING (optional)

Specify the resampling method.

• Nearest Neighbor: Uses the nearest pixel without any interpolation.
• Bilinear (default): Performs a linear interpolation using four pixels to resample.
• Cubic Convolution: Uses 16 pixels to approximate the sinc function using cubic polynomials to resample the image.

ROW_MAPPING (required)

Specify an array of interpolation coordinates for each row of pixels. This array must be the same size as the number of rows in INPUT_RASTER. This parameter must be combined with COLUMN_MAPPING to define a regular grid of interpolation coordinates.

Version History

ENVI 5.2	Introduced
ENVI 5.5	OUTPUT_RASTER_URI now supports '*', which allows OUTPUT_RASTER to be virtual output.

API Version

4.2

See Also

ENVITask, DimensionsResampleRaster Task, PixelScaleResampleRaster Task, ENVISubsetRaster