How do I remove element lower/greater than a certain value in a matrix?

Question

hithere 2014-11-5

0
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https://ww2.mathworks.cn/matlabcentral/answers/161366-how-do-i-remove-element-lower-greater-than-a-certain-value-in-a-matrix

回答： Image Analyst 2014-11-5

Lets say I have

So in this case, i want to remove values lower than 5 and greater than 11 , so i will end up getting this:

How should I do this?

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Answer 1

Image Analyst 2014-11-5

4
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https://ww2.mathworks.cn/matlabcentral/answers/161366-how-do-i-remove-element-lower-greater-than-a-certain-value-in-a-matrix#answer_157758

在 MATLAB Online 中打开

Try this:

A = [1
    3
    2
    7
    4
    10
    12
    9
    8
    15
    13]
rowsToDelete = A < 5 | A > 11
A(rowsToDelete) = []

Give you exactly what you asked for.

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Answer 2

dpb 2014-11-5

1
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https://ww2.mathworks.cn/matlabcentral/answers/161366-how-do-i-remove-element-lower-greater-than-a-certain-value-in-a-matrix#answer_157757

在 MATLAB Online 中打开

Use my helper function iswithin

>> A(iswithin(A,5,11))
ans =
   7
  10
   9
   8
>> >> type iswithin
function flg=iswithin(x,lo,hi)
% returns T for values within range of input
% SYNTAX:
%  [log] = iswithin(x,lo,hi)
%      returns T for x between lo and hi values, inclusive
flg= (x>=lo) & (x<=hi);