How to iterate over a column vector in Matlab

Question

Possible Duplicate    How do I iterate through each element in an n-dimensional matrix in MATLAB        I have a column vector list which I would like to iterate like this   for elm in list      do something with elm   How

User · Answer

for i 1 length list    elm   list i       do something with elm

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In Matlab  you can iterate over the elements in the list directly  This can be useful if you don t need to know which element you re currently working on   Thus you can write  for elm   list    do something with the element end   Note that Matlab iterates through the columns of list  so if list is a nx1 vector  you may want to transpose it

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with many functions in matlab  you don t need to iterate at all     for example  to multiply by it s position in the list   m    1 numel list     elm   list  m    vectorized algorithms in matlab are in general much faster

User · Answer

If you just want to apply a function to each element and put the results in an output array  you can use arrayfun   As others have pointed out  for most operations  it s best to avoid loops in MATLAB and vectorise your code instead

[matlab] How to iterate over a column vector in Matlab?

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