MATLAB: Transform a vector by keeping the numbers by pairs

MATLABMATLAB and Simulink Student Suitematrixpairpairsreshapevector

Let's say I have a vector that contains some coordinates (x,y) in this way:

A=[1 2 3 4 5 6 7 8 9 10]

And I want to transform it in this matrix:

How can I do it? 'reshape' command is not what I'm searching. Thanks for the help.

Best Answer

reshape(A, 2, []).'

Related Solutions

MATLAB: Pairs of consecutive numbers

Well, you're almost there. When the diff is 1 or -1, this means that the number at the same index and the next one are consecutive. The easiest way to find the non-consecutive numbers is to take the set difference of all the indices with the pair indices.

A = [6 2 3 2 4 1 3 2 1 0 5]
pairindices = find(ismember(diff(A), [-1, 1])) + [0;1]  %assumes A is a row vector
nonconsindices = setdiff(1:numel(A), pairindices)

Another method, which uses the undocumented feature that strfind works with numeric vectors:

nonconsindices = strfind([0, abs(diff(A)) == 1, 0], [0, 0])

MATLAB: How to flip every 5th row and column in matrix

>> M = repmat((1:12).',1,3)
M =
    1    1    1
    2    2    2
    3    3    3
    4    4    4
    5    5    5
    6    6    6
    7    7    7
    8    8    8
    9    9    9
   10   10   10
   11   11   11
   12   12   12
>> M([4:6:end,6:6:end],:) = M([6:6:end,4:6:end],:)
M =
    1    1    1
    2    2    2
    3    3    3
    6    6    6
    5    5    5
    4    4    4
    7    7    7
    8    8    8
    9    9    9
   12   12   12
   11   11   11
   10   10   10

Best Answer

Related Solutions

MATLAB: Pairs of consecutive numbers

MATLAB: How to flip every 5th row and column in matrix

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