"java,mathworks" - Matlab Java Exception

Question

After running my code for a few hours, it has stopped and the message bellow was exhibited.

Exception in thread "FileDecorationCache request queue" java.lang.NullPointerException
    at com.mathworks.mlwidgets.explorer.model.table.UiFileList.fireListeners(UiFileList.java:450)
    at com.mathworks.mlwidgets.explorer.model.table.UiFileList.access$000(UiFileList.java:43)
    at com.mathworks.mlwidgets.explorer.model.table.UiFileList$1.stateChanged(UiFileList.java:118)
    at com.mathworks.util.MulticastChangeListener.stateChanged(MulticastChangeListener.java:26)
    at com.mathworks.mlwidgets.explorer.model.FileDecorationCache$1.stateChanged(FileDecorationCache.java:101)
    at com.mathworks.util.MulticastChangeListener.stateChanged(MulticastChangeListener.java:26)
    at com.mathworks.mlwidgets.explorer.model.FileDecorationModel$2$2.run(FileDecorationModel.java:299)
    at com.mathworks.mlwidgets.explorer.extensions.basic.DefaultFileInfoProvider$4.run(DefaultFileInfoProvider.java:91)
    at com.mathworks.mlwidgets.explorer.model.FileDecorationModel$3$1.run(FileDecorationModel.java:342)
    at com.mathworks.util.RequestQueue.execute(RequestQueue.java:105)
    at com.mathworks.util.RequestQueue.access$000(RequestQueue.java:23)
    at com.mathworks.util.RequestQueue$2.run(RequestQueue.java:76)
    at java.lang.Thread.run(Unknown Source)   
Subscripted assignment between dissimilar structures.

Does anyone have an idea what this means?

In particular.. what does Subscripted assignment between dissimilar structures mean???

I've been trying fix this problem since monday and I still have no idea what is happening. Save me

Thanks, bruno!

Part of code:

I have a

function Polynome(output, inputs)
output = {'a'}
inputs = {'b', 'c', 'd', 'e'}

and have a data base where each column is equivalente to each letter, so this code will search who are the columns and put into a polyfitn function saying that y = output and x = inputs.

For 2 others database I used, it worked very well as I wanted. But now it's not working and show me that error.

can you please post some of the code (not all) to verify the cause of NPE? — Abubakkar

Chris Taylor Chris Taylor · Accepted Answer · 2013-07-04T13:47:07

The error Subscripted assignment between dissimilar structures generally occurs when you try to do something like the following --

>> s.a = 1;
>> s.b = 2;
>> t.a = 1;
>> s(1) = t   // For this to work, s and t must have the same fields
??? Subscripted assignment between dissimilar structures.

Check where you're doing a subscripted assignment between structures in your code, and see if the structures you're assigning have the same fields or not.

"java,mathworks" - Matlab Java Exception

1 Answers