Logical indexing within parfor statement

Hi. I have a problem with parfor and an indexing. As you can see in my code below, I get a group of elements of a matrix using find, then I use these indexes to select the elements I need to. So it's said to me that is an error due to the way I've indexed. Any suggestion?

baseDatosFilaTemp=zeros(1,8);
tempBaseDatosIDs=zeros(cbdAcelerados,1);
tempBaseDatosIDs=baseDatos(:,columnaID);
parfor n=1:fbdAcelerados

bdAceleradosFila=zeros(1,8);
bdAceleradosFila=bdAcelerados(n,:);
indice=find(tempBaseDatosIDs==bdAceleradosFila(colAcID));
 if(~isempty(indice))
  if(bdAceleradosFila(colAcT)>=0)
     baseDatosFilaTemp=baseDatos(indice,:);%*<-HERE TROUBLE*
     baseDatosFilaTemp(columnaV)=incrVel+baseDatosFilaTemp(columnaV);
     if(baseDatosFilaTemp(columnaV)>vMax)
        baseDatosFilaTemp(columnaV)=vMax;
     end
     baseDatos(indice,:)=baseDatosFilaTemp;
  end
 end
end

Thanks,Javier

[Sean de Wolski]

I don't think you need the for-loop at all. Can you post a small example of the data and expected output?

[Javier]

The expected output is an update of baseDatos matrix elements which are in the matrix bdAcelerados too. The issue to use pafoor is the dimension of baseDatos which could be 500x8 for example.

[Javier]

Sorry the example:

baseDatos=[ 10 22 1 1 1 1 1 2

20 33 1 2 4 5 7 9]

bdAcelerados =[ 2 2 2]

Then the update will be:

baseDatos=[ 10+incrVel 22 1 1 1 1 1 2

20 33 1 2 4 5 7 9]

Answer 1

[Jan]

You've stated, that there are "troubles". I guess, that this does not mean an error, but a warning of MLint?! Does it say, that you can omit the FIND? Then I suggest:

% Omit this useless line: bdAceleradosFila=zeros(1,8);
bdAceleradosFila=bdAcelerados(n,:);
indice = (tempBaseDatosIDs==bdAceleradosFila(colAcID));
if any(indice)
  if bdAceleradosFila(colAcT) >= 0
     baseDatosFilaTemp = baseDatos(indice,:);
...

[Javier]

Hi Jan, thanks for replying!

Yes I have got a warnning produced by the parfor loop, to be precise, due to the use of baseDatos. I've made the changed you have suggested to me, but despite them, I still get the warnning...

Thanks!