i have some problem in this code. upto subsample{i} it works fine. i done some certain operation on every elements of subsample. but i cant able to store these values into kmers{x}.it will be batter if values are store in a matrix. please help me .

i have some problem in this code. upto subsample{i} it works fine. i done some certain operation on every elements of subsample. but i cant able to store these values into kmers{x}.it will be batter if values are store in a matrix. please help me.

sample=datasample('ATCG',20);
display(sample);
i=1;
for k= 1:length(sample)
    subsamplelength =  randi([5 10]);
    subsamplestart = randi(length(sample)-subsamplelength+1); 
    subsample{i}= sample(subsamplestart : subsamplestart+subsamplelength-1);
    i=i+1;
end
display(subsample);
for r=1:length(subsample)
    element=subsample{r};
    ksize=5;
    x=1;
    for j= 1:length(element)-ksize+1
        kmers{x} = element(j:j+ksize-1) ;
        disp(kmers);
    end
    x=x+1; 
end

[per isakson]

• datasample &nbsp is that a function?
• why is x=x+1; outside the loop?

[Tonmoy saha]

yes datasample it is a function. it generate random sample. if i use this x=x+1; or not i got the same result. these are my results

      sample =
  TTGTGCGAGGATTCACCCTA
  subsample = 
    Columns 1 through 12
      'CGAGGATT'    'AGGAT'    'AGGATTC'    'GGATTCACC'    'TTGTGCGAGG'    'GAGGAT'    'GGATTCACCC'    'GCGAGGA'    'TTCAC'    'GTGCGAGG'    'GTGCGAG'    'GCGAGGATT'
    Columns 13 through 20
      'TTGTGCGAGG'    'AGGATTCAC'    'GGATTCAC'    'TGTGCGAGG'    'TTGTGCGAGG'    'GTGCGA'    'TTGTGCGAGG'    'GGATTCAC'
      'CGAGG'
      'GAGGA'
      'AGGAT'
      'GGATT'
      'AGGAT'
      'AGGAT'
      'GGATT'
      'GATTC'
      'GGATT'
      'GATTC'
      'ATTCA'
      'TTCAC'
      'TCACC'
      'TTGTG'
      'TGTGC'
      'GTGCG'
      'TGCGA'
      'GCGAG'
      'CGAGG'
      'GAGGA'
      'AGGAT'
      'GGATT'
    .......

[per isakson]

• "better if values are store in a matrix" &nbsp letters cannot be stored in a matrix (Matlab nomenclature). Do you mean a character array? Could you give an example of the output you want?
• kmers{x} is obviously overwritten a number of times, since x isn't incremented inside the inner loop.

[Walter Roberson]

What error are you encountering?

[per isakson]

"if i use this x=x+1; or not i got the same result" &nbsp Use in what way?

[Tonmoy saha]

if i use x=x+1 inside the inner loop i got this kind of result

     'GCCAC'
    'TAACG'
    'TAACG'    'AACGC'
    'TAACG'    'AACGC'    'ACGCT'
    'TAACG'    'AACGC'    'ACGCT'    'CGCTG'
    'TAACG'    'AACGC'    'ACGCT'    'CGCTG'    'GCTGC'
    'GCCAC'    'AACGC'    'ACGCT'    'CGCTG'    'GCTGC'
    'GCCAC'    'CCACC'    'ACGCT'    'CGCTG'    'GCTGC'
  .........

if i use x=x+1 outside the loop or not it gives me same expected result but not in char array form. in my next phase i can't able to access the kmers{x} values.

    display(kmers{2});
Index exceeds matrix dimensions.

values are not storing into kmers{x}. this is my problem.