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

mitulsj

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.

mitulsj

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

Hi,

this seems to be something very specific in this SOM model. Something like an outlier which has no neighbours or so?

Best,

Martin

mitulsj

I used that. Earlier it used to work. Not I got those errors. Any change that I should make to this!?