SAGA.ta_channels.7: Valley Depth

Valley depth is calculated as difference between the elevation and an interpolated ridge level. Ridge level interpolation uses the algorithm implemented in the 'Vertical Distance to Channel Network' tool. It performs the following steps:<br/> - Definition of ridge cells (using Strahler order on the inverted DEM).<br/> - Interpolation of the ridge level.<br/> - Subtraction of the original elevations from the ridge level.<br/>

Inputs

Élévation

format
href
Please set a value for ELEVATION.

Maximum change in elevation units (e.g. meter), iteration is stopped once maximum change reaches this threshold.

number

Maximum number of iterations, ignored if set to zero

integer

Keep Ridge Level above Surface

boolean

Ridge Detection Threshold

integer

Outputs

Valley Depth

format
transmission

Ridge Level

format
transmission

Execution options

successUri
inProgressUri
failedUri

format

mode

Execute End Point

View the execution endpoint of a process.

View the alternative version in HTML.

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"application/x-ogc-envi", "application/x-ogc-aaigrid", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "ELEVATION"}, "THRESHOLD": {"title": "Tension Threshold", "description": "Maximum change in elevation units (e.g. meter), iteration is stopped once maximum change reaches this threshold.", "schema": {"type": "number", "default": 1, "format": "double", "nullable": true}, "id": "THRESHOLD"}, "MAXITER": {"title": "Maximum Iterations", "description": "Maximum number of iterations, ignored if set to zero", "schema": {"type": "integer", "default": 0, "nullable": true}, "id": "MAXITER"}, "NOUNDERGROUND": {"title": "Keep Ridge Level above Surface", "description": "Keep Ridge Level above Surface", "schema": {"type": "boolean", "default": false, "enum": ["true", "false"], "nullable": true}, "id": "NOUNDERGROUND"}, "ORDER": {"title": "Ridge Detection Threshold", "description": "Ridge Detection Threshold", "schema": {"type": "integer", "default": 4, "minimum": 1, "maximum": 7, "nullable": true}, "id": "ORDER"}}, "outputs": {"VALLEY_DEPTH": {"title": "Valley Depth", "description": "Valley Depth", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "application/x-ogc-envi", "application/x-ogc-aaigrid", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "VALLEY_DEPTH"}, "RIDGE_LEVEL": {"title": "Ridge Level", "description": "Ridge Level", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "application/x-ogc-envi", "application/x-ogc-aaigrid", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}]}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "RIDGE_LEVEL"}}}

http://demo.mapmint.com/ogc-apihttp://localhost/ogc-api/processes/SAGA.ta_channels.7.html
Last modified: Sat Feb 19 15:43:34 CET 2022