MATLAB - Convert vector to matrix











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How could I convert vector in MATLAB to this specific type of matrix? Number of columns will be a parameter.



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    You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
    – Ander Biguri
    Nov 7 at 11:21










  • it is not just a reshape since some values are duplicated.
    – Brice
    Nov 7 at 11:29















up vote
0
down vote

favorite












How could I convert vector in MATLAB to this specific type of matrix? Number of columns will be a parameter.



matrix






matlab







share|improve this question




















  • 1




    You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
    – Ander Biguri
    Nov 7 at 11:21










  • it is not just a reshape since some values are duplicated.
    – Brice
    Nov 7 at 11:29













up vote
0
down vote

favorite









up vote
0
down vote

favorite











How could I convert vector in MATLAB to this specific type of matrix? Number of columns will be a parameter.



matrix






matlab







share|improve this question















How could I convert vector in MATLAB to this specific type of matrix? Number of columns will be a parameter.



matrix






matlab




matlab






share|improve this question















share|improve this question













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edited Nov 7 at 11:27









Wolfie

14.5k51741




14.5k51741










asked Nov 7 at 11:17









Matúš Prozbík

131




131








  • 1




    You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
    – Ander Biguri
    Nov 7 at 11:21










  • it is not just a reshape since some values are duplicated.
    – Brice
    Nov 7 at 11:29














  • 1




    You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
    – Ander Biguri
    Nov 7 at 11:21










  • it is not just a reshape since some values are duplicated.
    – Brice
    Nov 7 at 11:29








1




1




You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
– Ander Biguri
Nov 7 at 11:21




You want to reshape the vector? reshape it then. Consider reading the documentation/using a search engine before asking in SO, basic "tutorial"-like questions are off topic
– Ander Biguri
Nov 7 at 11:21












it is not just a reshape since some values are duplicated.
– Brice
Nov 7 at 11:29




it is not just a reshape since some values are duplicated.
– Brice
Nov 7 at 11:29












1 Answer
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You can build (once for all) a matrix with the indices (1:L on first column, 1:K on first row, etc), then simply do a selection from the data vector based on those indices



% matrix containing the indices 

indices = bsxfun(@plus,(0:L-1)',(0:K-1)) + 1; % L-by-K matrix

% now get the data from the vector, based on the indices

X=x(indices);





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    up vote
    1
    down vote



    accepted










    You can build (once for all) a matrix with the indices (1:L on first column, 1:K on first row, etc), then simply do a selection from the data vector based on those indices



    % matrix containing the indices 
    
indices = bsxfun(@plus,(0:L-1)',(0:K-1)) + 1; % L-by-K matrix
    
% now get the data from the vector, based on the indices
    
X=x(indices);





    share|improve this answer

























      up vote
      1
      down vote



      accepted










      You can build (once for all) a matrix with the indices (1:L on first column, 1:K on first row, etc), then simply do a selection from the data vector based on those indices



      % matrix containing the indices 
      
indices = bsxfun(@plus,(0:L-1)',(0:K-1)) + 1; % L-by-K matrix
      
% now get the data from the vector, based on the indices
      
X=x(indices);





      share|improve this answer























        up vote
        1
        down vote



        accepted







        up vote
        1
        down vote



        accepted






        You can build (once for all) a matrix with the indices (1:L on first column, 1:K on first row, etc), then simply do a selection from the data vector based on those indices



        % matrix containing the indices 
        
indices = bsxfun(@plus,(0:L-1)',(0:K-1)) + 1; % L-by-K matrix
        
% now get the data from the vector, based on the indices
        
X=x(indices);





        share|improve this answer












        You can build (once for all) a matrix with the indices (1:L on first column, 1:K on first row, etc), then simply do a selection from the data vector based on those indices



        % matrix containing the indices 
        
indices = bsxfun(@plus,(0:L-1)',(0:K-1)) + 1; % L-by-K matrix
        
% now get the data from the vector, based on the indices
        
X=x(indices);






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 7 at 11:28









        Brice

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