Files from toolbox/matlab broken out of nowhere

Hi,

I just wanted to use the plot command and got as error:

??? Error: File: isprop.m Line: 1 Column: 1 The input character is not valid in MATLAB statements or expressions.

After beeing very confused about that fact that plot didn't work I opened isprop.m. What I found there was rather shocking. Instead of a matlab function the contents of isprop.m were complete garbage.

The same is true for toeplitz.m which is used by kstest.

That really frightens me as both functions worked a few days ago. Did anyone experience something similar?

Answer 1

[Sean de Wolski]

What does:

which -all isprop

return?

and:

which -all toeplitz

Also, is there invisible ASCII on these lines or an M-LINT warning?

Answer 2

[Julian]

This is what I get if I open isprop http://userpage.fu-berlin.de/juka87/public/isprop.png.

The which commands you asked for

      >> which -all toeplitz
      C:\Program Files\MATLAB\R2010a\toolbox\matlab\elmat\toeplitz.m   

>> which -all isprop
C:\Program Files\MATLAB\R2010a\toolbox\matlab\datatypes\isprop.m

This happens when I leave isprop open for a while:

>> open isprop
        Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException
          at java.lang.System.arraycopy(Native Method)
          at com.mathworks.widgets.text.mcode.MLintUtils.convertByteToStringPosition(MLintUtils.java:612)
          at com.mathworks.widgets.text.mcode.MLintUtils.getEndPosition(MLintUtils.java:559)
          at com.mathworks.widgets.text.mcode.MLintUtils.getEndPosition(MLintUtils.java:548)
          at com.mathworks.widgets.text.mcode.MLintDecorator.getTooltipMessagesAt(MLintDecorator.java:651)
          at com.mathworks.widgets.text.mcode.MEditorUI.getMLintMessagesAt(MEditorUI.java:147)
          at com.mathworks.widgets.text.mcode.MLintUtils.getMLintMessagesAtPosition(MLintUtils.java:717)
          at com.mathworks.widgets.text.mcode.MKit.getMLintMessagesUnderMouse(MKit.java:420)
          at com.mathworks.widgets.text.mcode.MKit.access$000(MKit.java:50)
          at com.mathworks.widgets.text.mcode.MKit$MBuildToolTipAction.actionPerformed(MKit.java:368)
          at com.mathworks.mde.editor.EditorMKit$EditorBuildToolTipAction.actionPerformed(EditorMKit.java:186)
          at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:256)
          at com.mathworks.widgets.text.mcode.MToolTipSupport$MToolTipAndComponentAWTListener.movedInsideSource(MToolTipSupport.java:345)
          at com.mathworks.widgets.tooltip.ToolTipAndComponentAWTListener$2.actionPerformed(ToolTipAndComponentAWTListener.java:69)
          at javax.swing.Timer.fireActionPerformed(Unknown Source)
          at javax.swing.Timer$DoPostEvent.run(Unknown Source)
          at java.awt.event.InvocationEvent.dispatch(Unknown Source)
          at java.awt.EventQueue.dispatchEvent(Unknown Source)
          at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
          at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
          at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
          at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
          at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
          at java.awt.EventDispatchThread.run(Unknown Source)

[Sean de Wolski]

http://www.mathworks.com/support/contact_us/index.html