how to choose some rows from a matrix randomly in turns? I mean increasingly counter

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ramin asadi 2016-11-12

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评论： Star Strider 2016-11-12

how to choose some rows from a matrix randomly in turns? I mean increasingly counter. for example if data is [1,2,3,4,5,6,7,8,9] the random choosing needs to be [1,4,5,7,9], but not [5,1,7,2,4]

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Star Strider 2016-11-12

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I am not certain what your criteria are.

See if this does what you want:

v = [1,2,3,4,5,6,7,8,9];
idx = randperm(length(v), 5);                           % Choose 5 Elements Randomly
random_choosing = sort(v(idx))                          % Random Elements (Sorted In Ascending Order)
random_choosing =
     2     4     6     7     8