3D array - Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Hi there,

I'm fairly new to Matlab, and to process my data I've begun with writing a simple script. I have a bunch of cells in a video, and I want to know the distance between one cell and all other cells in each frame, and then repeat for all cells - so I would end up with a 3D array with cellnumber vs. cellnumber vs. frame, containing distances.

My script worked well for a practise dataset I made with only 2 cells and 7 frames, but my actual data has 170 frames and 54 cells...

Below is my script: (note that findInd2 and findDist2 are my own functions)

cellNum = mydata(:,2);
frames = mydata(:,3);
xs = mydata(:,4);
ys = mydata(:,5);

dist = zeros(cellNum,cellNum,frames);

numberOfFrames = 170;

for i = 1:numberOfFrames
    [ xPos, yPos, xyPos ] = findInd2( frames, xs, ys, i );

      [cellDist] = findDist2(xyPos, i);

      dist (:,:,i) = cellDist;

end

It works up until the final line

dist (:,:,i) = cellDist;

where I get the error 'Assignment has more non-singleton rhs dimensions than non-singleton subscripts'. I'm not sure what this means - I think I should define the other variables in the 'dist' array but I'm not sure how... Or should it be a 4D array instead?

Any help is much appreciated!

Thanks,

Michelle

Answer 1

[Cedric]

Look at the size of cellDist, it is probably not a cellNum x cellNum array.