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I am getting - Error executing background job 'Creating Display' java.lang.NullPointerException

mitulsj
mitulsj Member Posts: 3 image Learner III
in Help
Following are the other details of the error.
  • Exception: java.lang.NullPointerException
  • Message: null
  • Stack trace:
  • edu.uci.ics.jung.algorithms.layout.ISOMLayout.adjustVertex(ISOMLayout.java:176)
  • edu.uci.ics.jung.algorithms.layout.ISOMLayout.adjust(ISOMLayout.java:139)
  • edu.uci.ics.jung.algorithms.layout.ISOMLayout.step(ISOMLayout.java:107)
  • edu.uci.ics.jung.algorithms.layout.LayoutDecorator.step(LayoutDecorator.java:58)
  • edu.uci.ics.jung.visualization.layout.ObservableCachingLayout.step(ObservableCachingLayout.java:59)
  • edu.uci.ics.jung.algorithms.layout.util.VisRunner.prerelax(VisRunner.java:62)
  • edu.uci.ics.jung.visualization.DefaultVisualizationModel.setGraphLayout(DefaultVisualizationModel.java:113)
  • edu.uci.ics.jung.visualization.DefaultVisualizationModel.(DefaultVisualizationModel.java:74)
  • edu.uci.ics.jung.visualization.DefaultVisualizationModel.(DefaultVisualizationModel.java:58)
  • edu.uci.ics.jung.visualization.VisualizationViewer.(VisualizationViewer.java:63)
  • com.rapidminer.gui.graphs.GraphViewer$1.(GraphViewer.java:158)
  • com.rapidminer.gui.graphs.GraphViewer.(GraphViewer.java:158)
  • com.rapidminer.gui.renderer.AbstractGraphRenderer.createReportable(AbstractGraphRenderer.java:95)
  • com.rapidminer.gui.processeditor.results.SingleResultOverview.(SingleResultOverview.java:190)
  • com.rapidminer.gui.processeditor.results.ProcessExecutionResultOverview.(ProcessExecutionResultOverview.java:209)
  • com.rapidminer.gui.processeditor.results.ResultOverview.addResults(ResultOverview.java:128)
  • com.rapidminer.gui.processeditor.results.DockableResultDisplay$2.run(DockableResultDisplay.java:217)
  • com.rapidminer.gui.tools.ProgressThread$3.run(ProgressThread.java:586)
  • java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  • java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  • java.lang.Thread.run(Thread.java:748)

Can anyone help me out with this.

Answers

  • mitulsj
    mitulsj Member Posts: 3 image Learner III
    I have a set of documents which I want to compare using data to similarity function. Earlier it was working. But now it is giving me error. need your expert help in this matter. thanks
  • MartinLiebig
    MartinLiebig Administrator, Moderator, Employee-RapidMiner, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,533 image RM Data Scientist
    Hi,
    this seems to be something very specific in this SOM model. Something like an outlier which has no neighbours or so?
    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
  • mitulsj
    mitulsj Member Posts: 3 image Learner III
    I used that. Earlier it used to work. Not I got those errors. Any change that I should make to this!?

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