How for loop Store all average values in single values

I have to store single average value from input 15 frames video file? below code i have tried but i cannot get any idea ?

if true
  % code
k1_stored = zeros(1,nFrames);
for k=1:nFrames
   avg= mean([X;Y]); %here x and y are array  coordinates values .
    k1_stored(round(avg)) = round(avg);
end
end
resultant = k1_stored(k1_stored~=0);
disp(resultant);

output: Columns 1 through 13

    23    26    28    29    30    31    32    33    34    35    36    37    38

Columns 14 through 26

    39    40    41    51    52    53    54    55    57    58    60    62    64

Columns 27 through 39

    69    70    72    73    75    76    77    78    79    81    82    83    84

Columns 40 through 42

    86    91    92

Answer 1

[Image Analyst]

Let's hope that is pseudocode because X and Y are not changing in your loop. So to store the mean as a function of frame number, do this in the loop

k1_stored(k) = avg; % Store average for k'th frame in k'th element of k1_stored array.

[SAMEER ahamed]

when i have tried like error i got it .

if true
  % code
k1_stored(k) = avg; 
end 
In an assignment  A(I) = B, the number of elements in B and I must be the
same

Answer 2

[Walter Roberson]

k1_stored(k) = round(avg);

[SAMEER ahamed]

when i have tried i got error like?

if true
  % code
k1_stored(k) = avg;
end

error: In an assignment A(I) = B, the number of elements in B and I must be the same

[Walter Roberson]

Then you are not calculating a single average value. Your X and your Y have multiple columns. You need to define what you want to have happen.

[SAMEER ahamed]

Yes ,I have 15 frames input video file , X and Y Coordinates have multiple values, below full code result of average of X and Y Coordinates .so how to store single variable value , because of comparison of previous value ?.

    if true
      % code
  k1_stored = zeros(1,nFrames);
  for k=1:nFrames
  X =[double(leftColumnX_frames) double(rightColumnX_frames) double(centroidColumn_frames) double(centroidColumn_frames) blobCentroid_frames(1)];
  Y = [double(centroidRow_frames) double(centroidRow_frames) double(centroidRow_frames) double(topRowY_frames) bottomRowY_frames];

avg= mean([X;Y]); %here x and y are array  coordinates values .
disp(avg);
end
  end

output :

     30.5000   81.0000   52.0000   35.5000   71.6083

     27.5000   86.0000   54.5000   37.5000   82.4859

     23.0000   83.5000   54.0000   36.5000   77.2374

     27.5000   78.0000   60.0000   40.5000   79.0523

     30.0000   90.5000   61.5000   51.5000   79.2326

     32.0000   80.5000   55.0000   35.5000   75.9350

     26.0000   83.5000   53.5000   34.5000   74.8572

     32.5000   83.0000   57.5000   38.5000   75.1091

     23.0000   91.5000   57.0000   40.5000   73.1437

     23.0000   91.5000   57.0000   40.5000   73.1437

     28.5000   82.0000   50.5000   32.5000   64.1770

     32.5000   81.0000   53.5000   36.0000   69.9803

     34.0000   83.5000   52.5000   35.5000   69.8479

     30.0000   81.5000   52.0000   33.5000   68.7584

     41.0000   83.5000   55.0000   40.0000   70.3833

[Walter Roberson]

k1_stored(k,:) = avg;

[SAMEER ahamed]

Thank's reply to me . i have tried but i got error like ? subscripted assignment dimension mismatch .so i need to store for looping all values in single variable any idea?

[Walter Roberson]

Okay, so for the moment use

k1_stored{k} = avg;

notice the curly bracket instead of round bracket.

After the loop you could try

cell2mat(k1_stored)

if you get an error in doing that then there was some "avg" that was not the same length as the others.