How to Interpolated data outliers

5 次查看(过去 30 天)
I have a data column that has 3630 rows of data. I used the method: [A, B] = rmoutliers (C, 'movmedian', window); to remove the data outliers.
These data were removed and I need them to be interpolated by the average of the entire column of data. How can I do this?

采纳的回答

Turlough Hughes
Turlough Hughes 2020-3-2
编辑:Turlough Hughes 2020-3-2
Generate some sample data:
C = (1:3630).';
idxout = randperm(3630,500); % random index for outliers
C(idxout) = C(idxout)+2000*(1-2*rand(numel(idxout),1));
Using rmoutliers some of the values are removed:
window = 50;
[A, B] = rmoutliers(C, 'movmedian', window);
Seeing as you've indicated that you only have a column vector of data I assume you want to interpolate using index position as your input for x, you could try the following:
idx = find(~B); % C(idx) is the same as A
D = interp1(idx,A,1:size(C,1)); % Interpolated using index position as x values.
Let me know.
  1 个评论
Turlough Hughes
Turlough Hughes 2020-3-3
Did this work for you? If not I suggest uploadibg the variable C as a .mat

请先登录,再进行评论。

更多回答(1 个)

Matheus Brito
Matheus Brito 2020-3-4
Hi Turlough
Yes, it worked very well and I was able to perform the procedures I needed.
Thank you!
  3 个评论
Matheus Brito
Matheus Brito 2020-3-9
Hi Turlough Hughes, how are you?
Can you help me again? After interpolation, in some cases matlab gave me the following information:
Error using eig
Input matrix contains NaN or Inf.
Do you know why this may be happening? And how can I solve this? So to calculate some variables such as area, amplitude, frequency and others?
Thanks

请先登录,再进行评论。

类别

Help CenterFile Exchange 中查找有关 Interpolation 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by