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Example for external tools with gzip and g... (1)

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This workflow is self-contained. It has a fixed URL from which a text file is downloaded (output as Original_file). That file is gzipped (output as Compressed_File) and then gunzipped again (output as Decompressed_File). The workflow wraps external tools from taverna.nordugrid.org and needs a beta version of Taverna 2.3 or later.

Created: 2011-05-18 | Last updated: 2011-05-18

Credits: Steffen Möller Alan Williams

Sample IMPACT hackathon workflow (1)

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Workflow that implements the Use Case for Group 2 at the IMPACT/Taverna hackathon. What it does is to take the URL of a TIFF image and compute the Levenshtein difference between the OCR output of the uncompressed version with various ones compressed at various bit rates.

Created: 2011-11-14 | Last updated: 2012-06-19

Credits: Donal Fellows

A heuristic measure for detecting undesire... (2)

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The workflow takes TIFF image instances as input, applies a list of JP2 compression parameter values, executes OCR using an open source OCR engine, evaluates the results, and creates a diagram visualising the results. Dependencies on external tools for the tool service components: Tesseract ImageMagick Kakadu Gnuplot Dependencies on external Java libraries of beanshells: Apache commons lang

Created: 2012-02-06 | Last updated: 2012-03-09

Credits: Sven