GRASS-GIS orchestration using pyWPS

Created: 2011-04-18 09:50:43 Last updated: 2011-04-25 15:21:35

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Generic workflow that run r.watershed, with auxiliary services: r.math and geotiff2png.

Watershed accumulation is calculated from DEM using r.watershed, the accumulation result is then filtered using r.math with equation: output=(if())

Generic workflow that run r.watershed, with auxiliary services: r.math and geotiff2png.

Watershed accumulation is calculated from DEM using r.watershed, the accumulation result is then filtered using r.math with equation: output=(if(a>100,a,null()))

The resulting geotiff is converted into a PNG for easy analysis in Taverna.

Note: The DEM used contains values below 0, this affect the quality of the final result.

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Descriptions (2)

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Processors (17)

Name	Type	Description
SRTM	stringconstant	Value http://rsg.pml.ac.uk/wps/testdata/elev_srtm_30m.tif
ExecuteProcess_r.watershed	wsdl	Wsdl http://localhost/test4.wsdl Wsdl Operation ExecuteProcess_r.watershed
ExecuteProcess_r.watershed_DataInputs	xmlsplitter
threshold_value_100	stringconstant	Value 100
ExecuteProcess_r.watershed_ProcessOutputs	xmlsplitter
ExecuteProcess_r.math	wsdl	Wsdl http://localhost/test4.wsdl Wsdl Operation ExecuteProcess_r.math
ExecuteProcess_r.math_DataInputs	xmlsplitter
math_gt_10	stringconstant	Value output=(if(a>1000,a,null()))
ExecuteProcess_r.math_ProcessOutputs	xmlsplitter
Decode_Base_64_to_byte_Array_2	localworker	Script import org.apache.commons.codec.binary.Base64; bytes = Base64.decodeBase64(base64.getBytes());
ExecuteProcess_geotiff2png	wsdl	Wsdl http://localhost/wps.cgi?WSDL Wsdl Operation ExecuteProcess_geotiff2png
ExecuteProcess_geotiff2png_DataInputs	xmlsplitter
ExecuteProcess_geotiff2png_ProcessOutputs	xmlsplitter
ExecuteProcess_geotiff2png_2	wsdl	Wsdl http://rsg.pml.ac.uk/wps/generic.wsdl Wsdl Operation ExecuteProcess_geotiff2png
ExecuteProcess_geotiff2png_2_ProcessOutputs	xmlsplitter
Decode_Base_64_to_byte_Array	localworker	Script import org.apache.commons.codec.binary.Base64; bytes = Base64.decodeBase64(base64.getBytes());
ExecuteProcess_geotiff2png_2_DataInputs	xmlsplitter

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Outputs (2)

Name	Description
outAccum
outAccumNull

Datalinks (18)

Source	Sink
ExecuteProcess_r.watershed_DataInputs:output	ExecuteProcess_r.watershed:DataInputs
SRTM:value	ExecuteProcess_r.watershed_DataInputs:elevation
threshold_value_100:value	ExecuteProcess_r.watershed_DataInputs:threshold
ExecuteProcess_r.watershed:ProcessOutputs	ExecuteProcess_r.watershed_ProcessOutputs:input
ExecuteProcess_r.math_DataInputs:output	ExecuteProcess_r.math:DataInputs
math_gt_10:value	ExecuteProcess_r.math_DataInputs:math
ExecuteProcess_r.watershed_ProcessOutputs:accumulationResult	ExecuteProcess_r.math_DataInputs:a
ExecuteProcess_r.math:ProcessOutputs	ExecuteProcess_r.math_ProcessOutputs:input
ExecuteProcess_geotiff2png_ProcessOutputs:outputResult	Decode_Base_64_to_byte_Array_2:base64
ExecuteProcess_geotiff2png_DataInputs:output	ExecuteProcess_geotiff2png:DataInputs
ExecuteProcess_r.math_ProcessOutputs:outputResult	ExecuteProcess_geotiff2png_DataInputs:input
ExecuteProcess_geotiff2png:ProcessOutputs	ExecuteProcess_geotiff2png_ProcessOutputs:input
ExecuteProcess_geotiff2png_2_DataInputs:output	ExecuteProcess_geotiff2png_2:DataInputs
ExecuteProcess_geotiff2png_2:ProcessOutputs	ExecuteProcess_geotiff2png_2_ProcessOutputs:input
ExecuteProcess_geotiff2png_2_ProcessOutputs:outputResult	Decode_Base_64_to_byte_Array:base64
ExecuteProcess_r.watershed_ProcessOutputs:accumulationResult	ExecuteProcess_geotiff2png_2_DataInputs:input
Decode_Base_64_to_byte_Array:bytes	outAccum
Decode_Base_64_to_byte_Array_2:bytes	outAccumNull

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Taverna 2

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Jorgejesus

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Jorgejesus

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PyWPS

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2536 viewings

1514 downloads

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Version History

In chronological order:

GRASS-GIS orchestration using pyWPS

Created by Jorgejesus on Monday 18 April 2011 09:50:43 (UTC)
GRASS-GIS orchestration using pyWPS

Created by Jorgejesus on Monday 25 April 2011 15:19:26 (UTC)

Last edited by Jorgejesus on Monday 25 April 2011 15:21:35 (UTC)

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GRASS-GIS orchestration using pyWPS

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