How to get three sub matrices from a matrix of any order? How we will do for general matrix? I have given an example of order 5.

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Farooq Aamir 2018-10-27

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评论： Walter Roberson 2018-10-28

采纳的回答： madhan ravi

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For example:

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

Ist sub matrix is A11=[1 4 5; 4 2 6 ; 5 6 3]; order should be 3by3,

2nd sub matrix is B11=[7 9 1; 8 10 1]; order should be 2by3,

3rd sub matrix is C11=[3 5; 5 4]; order should be 2by2.

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Farooq Aamir 2018-10-28

@ Walter Roberson, A has some special structure so that's why I divide A into this way. (e.g Hamiltonian matrix)

Walter Roberson 2018-10-28

If it had been order 7 then which parts would you need?

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madhan ravi 2018-10-28

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A=  [1    4    5    7    8;
     4    2    6    9    10;
     5    6    3    1    1;
     7    9    1   3    5;
     8    10   1    5   4];
A11=a(1:3,1:3)
B11=a(1:3,end-1:end)
C11=a(end-1:end, end-1:end)

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Farooq Aamir 2018-10-28

@ Madhan Ravi bundle of thanks....

madhan ravi 2018-10-28

Anytime :)

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