Eliminating common elements across multiple arrays

Question

AKHILESH KUMAR 2016-12-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/315433-eliminating-common-elements-across-multiple-arrays

评论： Stephen23 2016-12-7

i have data like-

A1  x    A2  y
1.2    1  1.3
1.3    2  1.6
1.4    3  1.5
1.5    4  1.4
1.4    6  1.4
1.7    7  1.7
1.6    8  1.5
1.3    9  1.7
1.6    10  1.2
1.8    12  1.3
1.2
1.5
1.9

and i want the output in which both are common like-

A  x  y
1.2  1.3
1.3  1.5
1.4  1.4
1.4  1.5
1.7  1.7
1.3  1.3
1.6  1.5
1.8  1.9

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Answer 1

Stephen23 2016-12-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/315433-eliminating-common-elements-across-multiple-arrays#answer_245988

编辑：Stephen23 2016-12-5

在 MATLAB Online 中打开

This is easy using intersect and some basic MATLAB indexing:

Ax = [1;3;4;5;8;9;11;12;14;15]; 
x =  [1.2;1.3;1.4;1.5;1.4;1.7;1.6;1.3;1.6;1.8];
Ay = [;1;2;3;4;6;7;8;9;10;12;13;14;15];
y =  [1.3;1.6;1.5;1.4;1.4;1.7;1.5;1.7;1.2;1.3;1.2;1.5;1.9];
[A,idx,idy] = intersect(Ax,Ay);
xn = x(idx);
yn = y(idy);

which gives:

>> [A,xn,yn]
ans =
  1.2000    1.3000
  1.3000    1.5000
  1.4000    1.4000
  1.4000    1.5000
  1.7000    1.7000
  1.3000    1.3000
  1.6000    1.5000
  1.8000    1.9000