How can i fix broken and incomplete documentation on MATLAB2018b on ubuntu 18.04.

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Abhigna Kurella 2018-12-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/435801-how-can-i-fix-broken-and-incomplete-documentation-on-matlab2018b-on-ubuntu-18-04

评论： b z 2019-9-17

I've installed MATLAB 2018b on ubuntu 16.04 and then upgraded ubuntu to 18.04. Now, I found the documentation broken and incomplete.

For eg,if i search ecg, the command window shows the following and documentation doesnt show anything

Exception in thread "AWT-EventQueue-0": java.lang.NullPointerException
	at com.mathworks.help.helpui.DocRoot.buildDocPageUrl(DocRoot.java:44)
	at com.mathworks.help.helpui.DocPageUrlBuilder.buildDocPageUrl(DocPageUrlBuilder.java:25)
	at com.mathworks.help.helpui.DocPageUrlBuilder.buildFileUrl(DocPageUrlBuilder.java:21)
	at com.mathworks.mlwidgets.help.LightweightHelpPanel$JsHelpPanelClientRunnable.getUrlToLoad(LightweightHelpPanel.java:224)
	at com.mathworks.mlwidgets.help.LightweightHelpPanel$JsHelpPanelClientRunnable.run(LightweightHelpPanel.java:208)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java: