GBDX

ENVI® Topographic Features

This task calculates topographic features on an input DEM.
GBDX Registered Name: ENVI_TopographicFeatures
Provider: Harris Geospatial Solutions

Inputs

The following table lists all ENVI_TopographicFeatures inputs.
Mandatory (optional) settings are listed as Required = True (Required = False).

Name Required Default Valid Values Description
file_types False N/A string GBDX Option. Comma seperated list of permitted file type extensions. Use this to filter input files -- Value Type: STRING[*]
input_raster True N/A See ENVIRASTER input type Specify a raster on which to calculate topographic features. -- Value Type: ENVIRASTER
input_raster_format False N/A See ENVIRASTER input type Provide the format of the image, for example: landsat-8. -- Value Type: STRING
input_raster_band_grouping False N/A See ENVIRASTER input type Provide the name of the band grouping to be used in the task, ie - panchromatic. -- Value Type: STRING
input_raster_filename False N/A See ENVIRASTER input type Provide the explicit relative raster filename that ENVI will open. This overrides any file lookup in the task runner. -- Value Type: STRING
input_raster_raw_output False False See ENVIRASTER input type Provide True to output an ENVI Binary instead of a tif. -- Value Type: STRING
features False N/A string Specify a string array with the features to classify. By default, all features will be included. -- Value Type: STRINGARRAY
curvature_tolerance False 0.10000000149011612 string Specify the curvature tolerance. -- Value Type: FLOAT -- Default Value: 0.10000000149011612
slope_tolerance False 1.0 string Specify the slope tolerance. -- Value Type: FLOAT -- Default Value: 1.0
kernel_size False 3 string Specify the size of the kernel used for processing. The default value is 3. -- Value Type: UINT -- Default Value: 3
pixel_size False N/A string Specify a double-precision array with the X and Y pixel size of the input raster, in meters. -- Value Type: DOUBLEARRAY
output_raster_uri_filename False N/A string Specify a string with the fully qualified path and filename of the output raster. -- Value Type: STRING

Outputs

The following table lists all ENVI_TopographicFeatures outputs.
Mandatory (optional) settings are listed as Required = True (Required = False).

Name Required Default Valid Values Description
task_meta_data False N/A directory GBDX Option. Output location for task meta data such as execution log and output JSON
output_raster_uri True N/A directory Output of the output raster. -- Value Type: ENVIURI

Output structure

The output_raster_uri file will be written to the specified S3 Customer Account Location.

Background

For additional background information on this task please refer to the Harris Geospatial ENVI documentation and
ENVI® Topographic Features.

Contact

If you have any questions or issues with this task, please contact gbdx-support@digitalglobe.com.