please in need help , how can i get all the possibile combination 111 112 121 122 211 212 221 222 for matrix A in matlab , than u

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mina massoud 2019-3-22

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https://ww2.mathworks.cn/matlabcentral/answers/451700-please-in-need-help-how-can-i-get-all-the-possibile-combination-111-112-121-122-211-212-221-222

编辑： Stephen23 2019-3-22

A=[ 1 1 ; 2 2 ; 3 3 ]

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Jan 2019-3-22

"than u"? Is "111" a number, or do you mean the vector [1, 1, 1]? Does it matter, that the input is [1,1; 2,2; 3,3], when the posted example of the output seems to be all combinations of the numbers [1,2] with repetitions? Where is the 3 in the output?

Please edit the question and explain exactly, which inputs should produce which outputs.

mina massoud 2019-3-22

sorry i mean '' thank u ''

the input is a numebr like this

R =

1.0e+03 *

0.5807 0.5192

1.8790 1.5183

0.6836 1.5183

and i need the combianation in base 3 like 112 mean that i need the first element of the first row and the first element of the second row ah the second element of the 3rd row

so i need 8 combination , thank u

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Answer 1

Stephen23 2019-3-22

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https://ww2.mathworks.cn/matlabcentral/answers/451700-please-in-need-help-how-can-i-get-all-the-possibile-combination-111-112-121-122-211-212-221-222#answer_366841

编辑：Stephen23 2019-3-22

>> R = [0.5807,0.5192;0.879,1.5083;0.6836,1.5183]
R =
5807  0.5192
8790  1.5083
6836  1.5183
>> [X,Y,Z] = ndgrid(1:2);
>> C = [X(:),Y(:),Z(:)]
C =
1  1
1  1
2  1
2  1
1  2
1  2
2  2
2  2
>> out = R(sub2ind(size(R),repmat(1:3,8,1),C))
out =
5807  0.8790  0.6836
5192  0.8790  0.6836
5807  1.5083  0.6836
5192  1.5083  0.6836
5807  0.8790  1.5183
5192  0.8790  1.5183
5807  1.5083  1.5183
5192  1.5083  1.5183