Error using horzcat: Dimensions of matrices being concatenated are not consistent.

Hello everyone, here is the partial code that creates above error:

counter=1;
accessRow=0;
for r=1:length(m)
accessVector=m(r);
newAccessVector=cell2mat(accessVector);
accessRow=accessRow + newAccessVector;
SplitFeaturesRow{r}=cidxE(counter:accessRow)
counter=1+accessRow;
vocabsize=1:500;
freq{r}=histc(SplitFeaturesRow{r},vocabsize);
combineFreq=horzcat(freq{:});
end

Referring code above, m output= 474 X1 cell but r output = 472 . I wonder why r did not get 474 as it should follow the length of m. I think this is the reason why I got that error message. But how to correct r?

[Walter Roberson]

Where is the end corresponding to your for ? It does not usually make sense to combine all of the existing elements of a cell array until the cell array has been fully populated after the end of the loop.

[Siti Suhaila]

I put the end already.

[Walter Roberson]

Okay... but are you sure you want to do that horzcat() within the loop? Every iteration of the loop you are overwriting the complete combineFreq variable

Answer 1

[KSSV]

Try:

out = cat(1, freq{:})

[Siti Suhaila]

Error using cat Dimensions of matrices being concatenated are not consistent.

Error in (line 69) combineFreq = cat(1, freq{:});