loading a file .mat problem

when i load a file.mat and i tried to open it , matlab hang out and gives this message

Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
  at javax.swing.table.DefaultTableColumnModel.getSelectedColumns(Unknown Source)
  at javax.swing.JTable.getSelectedColumns(Unknown Source)
  at com.mathworks.widgets.spreadsheet.SpreadsheetTable.areOnlyEntireRowsSelected(SpreadsheetTable.java:1115)
atcom.mathworks.widgets.spreadsheet.SpreadsheetTable.access$2200(SpreadsheetTable.java:65)
atcom.mathworks.widgets.spreadsheet.SpreadsheetTable$UnamInsertDeleteAction.reexamineActionEnabled(SpreadsheetTable.java:1724)
  atcom.mathworks.widgets.spreadsheet.SpreadsheetTable.reexamineRegionAmbiguities(SpreadsheetTable.java:651)
atcom.mathworks.widgets.spreadsheet.SpreadsheetTable.access$900(SpreadsheetTable.java:65)
  atcom.mathworks.widgets.spreadsheet.SpreadsheetTable$RowSelectionListener.valueChanged(SpreadsheetTable.java:640)
  at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
  at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
  at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
  at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
  at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
  at javax.swing.DefaultListSelectionModel.removeSelectionIntervalImpl(Unknown Source)
  at javax.swing.DefaultListSelectionModel.clearSelection(Unknown Source)
  
>>

Answer 1

[mausam]

your data may be too large. try 'whos' to get variables inside it and then try loading it separately.

[mado]

it is a single variable of 2x425041 ? i want one row how to do that

[mausam]

lets say you have 'data1' as your variable.

try

%%========

p=matfile('D:\foldername\yourtobeloadeddata.mat');

desiredvar = p.data1(1,:);

%%================

it should work

[mausam]

i was assuming your data is in "D:\foldername"

Answer 2

[Image Analyst]

2 by 425,041 is not that large. 6.8 megabytes for a double - pretty small actually. Were you running a remote session with someone at a different computer at all (running VNC, Webex, Lync, TeamCenter, etc.)? I've seen weird java errors sometimes when sharing my screen with others.

Answer 3

[Star Strider]

Please post your relevant code that causes the error.

When you use the load function for a ‘.mat’ file, load adds the variables in the file to your workspace. You do not need to ‘open’ anything after you load it. The variables in it are there in your workspace for you to work with.