Comparing between and within 3 columns of a matrix

조회 수: 2 (최근 30일)

Joshua Folorunso 2022년 12월 8일

0
링크

이 질문에 대한 바로 가기 링크

https://kr.mathworks.com/matlabcentral/answers/1873652-comparing-between-and-within-3-columns-of-a-matrix

댓글: Joshua Folorunso 2022년 12월 8일

Hello, I have a similar question to the one I asked before. I have 3 vectors to compare. Matrix below is a simplified form containing the 3 vectors A, B, C that I want to find the direction of. The values should increase from A to B to C in an ascending order the to the next A and continously like that. If the order is reversed, I want to recored it as negative. The negative continues until the direction is reversed again. Thank you for your response.

Sequence = [ 1, 2,3;4,5,6; 8, 9,7; 14,11,10; 15,13,12;16,20, 17; 18, 21, 19]
Sequence = 7×3
   2     3
   5     6
   9     7
  11    10
  13    12
  20    17
  21    19

For example in the sequence above, I want to move across the columns from column 1 to column 2 to column 3 ( 1-2-3) continously till the end of the matrix in an ascending order. Any other direction is -ve i.e. 3 - 2, 1 - 3, 2 - 1, 1 -1, 2 to 2 or 3 to 3. E.g

1 to 2 is Positive. (I use +1)

2 to 3 is = +1

4 to 5 to 6 = +1

6 to 7 is = -1 (change in direction, ought to go back to next first column)

7 to 8 is = -1 (still continuing in the -ve direction )

8 to 9 = -1

9 to 10 = -1 (the direction is from second column to third column so no change of direction. same as before , )

10 to 11 = -(-1) = +1 ( there is a reversal of direction from column 3 to 2 instead of 1, direction is -ve of previous direction which gives positive).

11 to 12 = +1

12 to 13 = -1

13 to 14= -(-1) = +1

14 to 15 = -1 (ought to go to column 3 and not same column)

15 to 16 = -(-1) = +1

16 to 17 = -1

17 to18 is = -1 (same direction)

18 to 19 = -(-1) = +1

19 to20 is = -1

20 to 21 = -(-1) = +1