Removing top and bottom outliers

Question

Nicholas Omoding 2021-7-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/876673-removing-top-and-bottom-outliers

编辑： Scott MacKenzie 2021-7-12

point_data.xlsx

I’ve surface damage depth (D) for 3D points (x, y, z). I’d like remove top and bottom 5% of the D values with their corresponding (x, y, z) from the matrix so that I can plot the remaining 90% of the points. Based on the attached sub set of the data, please kindly assist on the based way to achieve this with the rmoutliers function?

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Answer 1

Scott MacKenzie 2021-7-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/876673-removing-top-and-bottom-outliers#answer_744818

编辑：Scott MacKenzie 2021-7-12

在 MATLAB Online 中打开

Yes, the rmoutliers function will do the trick. After removing the top and bottom 5% of the values, the vectors below are reduced from 100 elements each to 90 elements each.

% test data
x = rand(1,100);
y = rand(1,100);
z = rand(1,100);
D = rand(1,100);
[D, TF] = rmoutliers(D, 'percentiles', [5 95]);
x(TF) = [];
y(TF) = [];
z(TF) = [];
whos
  Name      Size             Bytes  Class      Attributes

  D         1x90               720  double               
  TF        1x100              100  logical              
  x         1x90               720  double               
  y         1x90               720  double               
  z         1x90               720  double               