Hi, there is a method of Flow named writeDot in cascading, dose cascalog
support it?

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  • Nathan Marz at Feb 21, 2013 at 2:46 am
    Use compile-flow instead of ?- to get the Flow object.
    On Wed, Feb 20, 2013 at 6:41 PM, sonic pan wrote:

    Hi, there is a method of Flow named writeDot in cascading, dose cascalog
    support it?

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  • Jeroen van Dijk at Feb 21, 2013 at 10:38 am
    I've also played with writeDot before. It so simple you probably already
    have something working, but since I had it lying around here is it anyway:

    ;; Visualize Cascading Flow's
    ;; See http://docs.cascading.org/cascading/1.2/userguide/htmlsingle/#N2009C
    (use 'cascalog.api)
    (.writeDOT (compile-flow (stdout) (<- [?a ?b] ([[1 2]] ?a ?b))) "cascading.dot")
    ;; Command line
    ;; dot -Tpng cascading.dot -o cascading.png && open cascading.png



    On Thu, Feb 21, 2013 at 3:46 AM, Nathan Marz wrote:

    Use compile-flow instead of ?- to get the Flow object.

    On Wed, Feb 20, 2013 at 6:41 PM, sonic pan wrote:

    Hi, there is a method of Flow named writeDot in cascading, dose
    cascalog support it?

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  • Sam Ritchie at Feb 21, 2013 at 4:52 pm
    Nice! Would you mind adding this quick bit to the wiki at
    github.com/nathanmarz/cascalog?
    Jeroen van Dijk February 21, 2013 2:38 AM
    I've also played with writeDot before. It so simple you probably
    already have something working, but since I had it lying around here
    is it anyway:

    ;; Visualize Cascading Flow's
    ;; See
    http://docs.cascading.org/cascading/1.2/userguide/htmlsingle/#N2009C

    (use 'cascalog.api)

    (.writeDOT (compile-flow (stdout) (<- [?a ?b] ([[1 2]] ?a ?b)))
    "cascading.dot")

    ;; Command line
    ;; dot -Tpng cascading.dot -o cascading.png && open cascading.png






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    @sritchie

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  • Jeroen van Dijk at Feb 23, 2013 at 6:31 pm
    Sam, I just created a first version on the Wiki
    https://github.com/nathanmarz/cascalog/wiki/Cascading-Flow-visualization

    I haven't added the page to the index yet since I wasn't sure where to put
    it. I also need to find an example where the visualisation really explains
    an existing flow instead of this 'hello world' output.

    On Thu, Feb 21, 2013 at 5:52 PM, Sam Ritchie wrote:

    Nice! Would you mind adding this quick bit to the wiki at
    github.com/nathanmarz/cascalog?

    Jeroen van Dijk <jeroentjevandijk@gmail.com>
    February 21, 2013 2:38 AM
    I've also played with writeDot before. It so simple you probably already
    have something working, but since I had it lying around here is it anyway:

    ;; Visualize Cascading Flow's
    ;; See
    http://docs.cascading.org/cascading/1.2/userguide/htmlsingle/#N2009C

    (use 'cascalog.api)

    (.writeDOT (compile-flow (stdout) (<- [?a ?b] ([[1 2]] ?a ?b)))
    "cascading.dot")

    ;; Command line
    ;; dot -Tpng cascading.dot -o cascading.png && open cascading.png






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    @sritchie

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  • Paul Lam at Feb 24, 2013 at 8:55 am
    Hi, I say just stick it before/after the troubleshooting link on the main
    page.

    Thank you for this. I didn't know that you can generate png from dot in the
    command line. Can you note that it needs graphviz installed please?

    https://github.com/Quantisan/Impatient has simple and non-trivial flows.


    On Saturday, February 23, 2013 6:31:29 PM UTC, Jeroen van Dijk wrote:

    Sam, I just created a first version on the Wiki
    https://github.com/nathanmarz/cascalog/wiki/Cascading-Flow-visualization

    I haven't added the page to the index yet since I wasn't sure where to put
    it. I also need to find an example where the visualisation really explains
    an existing flow instead of this 'hello world' output.


    On Thu, Feb 21, 2013 at 5:52 PM, Sam Ritchie <sritc...@gmail.com<javascript:>
    wrote:
    Nice! Would you mind adding this quick bit to the wiki at
    github.com/nathanmarz/cascalog?

    Jeroen van Dijk <javascript:>
    February 21, 2013 2:38 AM
    I've also played with writeDot before. It so simple you probably already
    have something working, but since I had it lying around here is it anyway:

    ;; Visualize Cascading Flow's
    ;; See
    http://docs.cascading.org/cascading/1.2/userguide/htmlsingle/#N2009C

    (use 'cascalog.api)

    (.writeDOT (compile-flow (stdout) (<- [?a ?b] ([[1 2]] ?a ?b)))
    "cascading.dot")

    ;; Command line
    ;; dot -Tpng cascading.dot -o cascading.png && open cascading.png






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categoriesclojure, hadoop
postedFeb 21, '13 at 2:45a
activeFeb 24, '13 at 8:55a
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