How can I break down my for loop in faster easier steps?

Here's the problem, I want to extract data from an anovan table to make a new matrix with only F's value(X1, X2, X1X2) and p-value(X1, X2, X1X2). So I created a for loop. The thing is it will create a 82000x6 matrix and MATLAB crashes everytime I run it. Is there a way to separate my loop to process only 800/82000 at a time (it crashes at 900)? Here's what I have at the moment :

n=81924;
c=0;
FX1=cell(1,81924);
FX2=cell(1,81924);
FX1X2=cell(1,81924);
PValueX1=cell(1,81924);
PValueX2=cell(1,81924);
PValueX1X2=cell(1,81924);
set(0,'DefaultFigureVisible','off')
for k=1:n;
  c=c+1;
 [p, table, stats]=anovan((vertcat(Y(:,c),Z(:,c))),{temps, amelioration}, 'interaction');
  tx1=table(2,6); %pour les F
  ux1=cell2mat(tx1);
  FX1{k}=(ux1);
  tx2=table(3,6);
  ux2=cell2mat(tx2);
  FX2{k}=ux2;
  tx1x2=table(4,6);
  ux1x2=cell2mat(tx1x2);
  FX1X2{k}=ux1x2;

    px1=table(2,7); %pour les p-value
    modpx1=cell2mat(px1);
    PValueX1{k}=modpx1;
    px2=table(3,7);
    modpx2=cell2mat(px2);
    PValueX2{k}=modpx2;
    px1x2=table(4,7);
    modpx1x2=cell2mat(px1x2);
    PValueX1X2{k}=modpx1x2;            
end  
TOUS=horzcat(FX1.',FX2.',FX1X2.',PValueX1.',PValueX2.',PValueX1X2.');

[the cyclist]

Not answering your question, but just a little side note that instead of

FX1=cell(1,81924);
FX2=cell(1,81924);
FX1X2=cell(1,81924);
PValueX1=cell(1,81924);
PValueX2=cell(1,81924);
PValueX1X2=cell(1,81924);

you could use the deal function

[FX1,FX2,FX1X2,PValueX1,PValueX2,PValueX1X2] = deal(cell(1,81924));

to accomplish the same thing.

[Genevieve Nuckle]

Thank you! (still new on Matlab so any tip helps a lot!)

Answer 1

[Steven Lord]

By "crash" do you mean MATLAB shuts down (potentially with a dialog box that says something like "MATLAB needs to shut down") or do you mean you receive an error?

If MATLAB shuts down, it should have generated a crash log file. Please send that to Technical Support for further investigation using either the crash reporter dialog that should have opened when MATLAB crashed or the Contact Us link in the upper-right corner of this page.

If MATLAB throws an error, please post the full text (everything in red) of the error message you receive and we may be able to explain why you receive that error and how to eliminate it.

[Genevieve Nuckle]

Sometimes I have a message like "MATLAB needs to shut down", but I dont see any crash log file.. Sometimes it throws an error that begins with: "Exception in thread "Timer-1"java.lang.OutOFMemoryError:Java heap space" There a tons of these errors, but since MATLAB closes short after it I cant copy it. I tried to augment the Java heap space to near 900MB but it still doesnt work.