MATLAB: How to find all possible combination of a digits between first and last digits

digitsfor loopprobability

I have points as 1, 2, 3, 4, 5. The point 1 is the first point, and 5 the last point.

I need to find all possible combination of the possible points between 1 and 5.

I need a result like this:

Could anyone help me? Thank you!

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MATLAB: Cell array manipulations in MATLAB

This is as efficient as I can write the code to do what you want:

countryname = { 'USA'
                'CHN'
                'ABW'};
export = {'USA' 'ABW'
          'USA' 'CHN'
          'CHN' 'USA'
          'ABW' 'USA'};
for k1 = 1:size(countryname)
    a(:,:,k1) = cellfun(@times,regexp(export, [countryname{k1}]),repmat({k1},size(export)),'Uni',0);
end
An = sum(cell2mat(a),3);
C = accumarray(An, 1);
fprintf(1, '\t\t  %s\t  %s\t  %s\n', countryname{1}, countryname{2}, countryname{3});
for k1 = 1:size(C,1)
    fprintf(1, '\t%s\t%4d\t%4d\t%4d\n', countryname{k1}, C(k1,:))
end
      USA    CHN    ABW
  USA     0     1     1
  CHN     1     0     0
  ABW     1     0     0

How it works:

The first for loop creates cell array ‘a’ with a regexp call inside a cellfun call to find matches and then multiply them by the loop variable at that iteration. (This makes it easier to assign the ‘C’ matrix indices later.) The ‘An’ array creates a (4x2) double array from ‘a’ that is then used by the accumarray call to create indices into array ‘C’ that is the final output array. The second for loop prints the results.

MATLAB: Build 2-D array with same 1-D array

hi Renuyan

yes, MATLAB has repmat

A=[1 2 3 4 5 4 6]

you set the amount of repetitions

reps=5

to replicate vertically:

repmat(A,reps,1)=
    1.00          2.00          3.00          4.00          5.00          6.00
    1.00          2.00          3.00          4.00          5.00          6.00
    1.00          2.00          3.00          4.00          5.00          6.00
    1.00          2.00          3.00          4.00          5.00          6.00
    1.00          2.00          3.00          4.00          5.00          6.00

replicating horizontally:

repmat(A,1,reps)=
  Columns 1 through 7
 1.00        2.00        3.00        4.00        5.00        6.00        1.00
  Columns 8 through 14
 2.00       3.00         4.00        5.00        6.00        1.00        2.00
  Columns 15 through 21
 3.00       4.00         5.00        6.00       1.00         2.00        3.00
  Columns 22 through 28
 4.00      5.00          6.00        1.00       2.00        3.00         4.00
  Columns 29 through 30
 5.00          6.00

so far the answer, but in similar exercises you may find also useful the command reshape. Let's say you want to stack A, either

reshape(A,[6,1]) =
          1.00
          2.00
          3.00
          4.00
          5.00
          6.00

If you find this answer of any help solving your question, please click on the thumbs-up vote link,

thanks in advance

John

jgb2012@sky.com

Best Answer

Related Solutions

MATLAB: Cell array manipulations in MATLAB

MATLAB: Build 2-D array with same 1-D array

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