0 个投票

I have a matrix of order 3*7
12 10 8 22 18 20 30
10 5 12 18 15 22 28
13 30 32 12 11 16 25
I want to add each element of every to each element of other rows
i.e. a1 a2 a3 a4 a5 a6 a7
c1 c2 c3 c4 c5 c6 c7 b1 b1 . . . . .
c1 c2 c3 c4 c5 c6 c7 b2 b2 . . . . .
c1 c2 c3 c4 c5 c6 c7 b3 b3 . . . . .
c1 c2 c3 c4 c5 c6 c7 b4 b4 . . . . .
c1 c2 c3 c4 c5 c6 c7 b5 b5 . . . . .
c1 c2 c3 c4 c5 c6 c7 b6 b6 . . . . .
c1 c2 c3 c4 c5 c6 c7 b7 b7 . . . . .
How can I do this using for loop ?

2 个评论
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David Hill
David Hill 2021-3-12
Hard to understand. Show the output you want using a smaller input matrix.
Mohammad Juned
Mohammad Juned 2021-3-12
编辑：Mohammad Juned 2021-3-12
let a a matrix of 3*3
1 2 3
4 5 6
7 8 9
now we add each element such as
1 + { (4+7) (4+8) (4+9)
(5+7) (5+8) (5+9)
(6+7) (6+8) (6+9) }
2+{ (4+7) (4+8) (4+9)
(5+7) (5+8) (5+9)
(6+7) (6+8) (6+9) }
3+{ (4+7) (4+8) (4+9)
(5+7) (5+8) (5+9)
(6+7) (6+8) (6+9) }
since this is a matrix of 3*3 order size therefore we have 3*3*3 i.e.27 elements in it.
for 3*7 we would have 7*7*7 i.e. 343 elements.

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 采纳的回答

David Hill
David Hill 2021-3-12

1 个投票

m=[12 10 8 22 18 20 30
10 5 12 18 15 22 28
13 30 32 12 11 16 25];
b=m(3,:)+m(2,:)';
for k=1:size(m,2)
M(:,:,k)=m(1,k)+b;
end

9 个评论
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Mohammad Juned
Mohammad Juned 2021-3-12
still not getting the right answer b is just adding up the b1 to c1 b2 to c2 b3 to c3 and so on
23 35 44 30 26 38 53
I want to add b1 to all elemnts of row c i.e.
10+13, 10+30, 10 +32 ........10+25
5+13, 5+30, 5+32......................5+25
.
.
.28+13, 28+30, 28+32............28+25
and then adding all these outcome to all elements of a.
David Hill
David Hill 2021-3-12
Works for your examples. If I am not understanding, you will need to explain further.
M(:,:,1) =
35 52 54 34 33 38 47
30 47 49 29 28 33 42
37 54 56 36 35 40 49
43 60 62 42 41 46 55
40 57 59 39 38 43 52
47 64 66 46 45 50 59
53 70 72 52 51 56 65
M(:,:,2) =
33 50 52 32 31 36 45
28 45 47 27 26 31 40
35 52 54 34 33 38 47
41 58 60 40 39 44 53
38 55 57 37 36 41 50
45 62 64 44 43 48 57
51 68 70 50 49 54 63
M(:,:,3) =
31 48 50 30 29 34 43
26 43 45 25 24 29 38
33 50 52 32 31 36 45
39 56 58 38 37 42 51
36 53 55 35 34 39 48
43 60 62 42 41 46 55
49 66 68 48 47 52 61
M(:,:,4) =
45 62 64 44 43 48 57
40 57 59 39 38 43 52
47 64 66 46 45 50 59
53 70 72 52 51 56 65
50 67 69 49 48 53 62
57 74 76 56 55 60 69
63 80 82 62 61 66 75
M(:,:,5) =
41 58 60 40 39 44 53
36 53 55 35 34 39 48
43 60 62 42 41 46 55
49 66 68 48 47 52 61
46 63 65 45 44 49 58
53 70 72 52 51 56 65
59 76 78 58 57 62 71
M(:,:,6) =
43 60 62 42 41 46 55
38 55 57 37 36 41 50
45 62 64 44 43 48 57
51 68 70 50 49 54 63
48 65 67 47 46 51 60
55 72 74 54 53 58 67
61 78 80 60 59 64 73
M(:,:,7) =
53 70 72 52 51 56 65
48 65 67 47 46 51 60
55 72 74 54 53 58 67
61 78 80 60 59 64 73
58 75 77 57 56 61 70
65 82 84 64 63 68 77
71 88 90 70 69 74 83
Mohammad Juned
Mohammad Juned 2021-3-12
When I am running your code the out shows like this but your output is showing differently
allcomb
23 35 44 30 26 38 53
(:,:,1) =
35 47 56 42 38 50 65
(:,:,2) =
33 45 54 40 36 48 63
(:,:,3) =
31 43 52 38 34 46 61
(:,:,4) =
45 57 66 52 48 60 75
(:,:,5) =
41 53 62 48 44 56 71
David Hill
David Hill 2021-3-12
编辑：David Hill 2021-3-12
If you copy and paste my code above in your command window and run, you will get my output.
Mohammad Juned
Mohammad Juned 2021-3-12
I have copied and pasted this code but still not getting the answer
m=[12 10 8 22 18 20 30
10 5 12 18 15 22 28
13 30 32 12 11 16 25];
b=m(3,:)+m(2,:)';
for k=1:size(m,2)
M(:,:,k)=m(1,k)+b;
end
David Hill
David Hill 2021-3-12
What release of matlab are you using? You may have to change this line
b=m(3,:)+m(2,:)';%if this is not giving you the correct matrix
with:
b=repmat(m(3,:),size(m,2),1)+repmat(m(2,:)',1,size(m,2));
Mohammad Juned
Mohammad Juned 2021-3-12
Thank you David Hill I have got the right output. One more query
how can i save this 343 values in a single matrix
David Hill
David Hill 2021-3-12
It already is saved in a single matrix M.
Mohammad Juned
Mohammad Juned 2021-3-12
I am using R2014a
I have to to do more operation on the matrix M. So can it be performed .

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