Delete specific rows from a cell array

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Alex
Alex 2014-12-14
回答： Idan Cohen 2020-4-1
Hello everyone, i have a cell array just like this:
value Class
1200 'Unknown - State'
1700 'Rest'
1600 'Unknown - State'
2100 'City'
How i'm going to remove the rows whose class is 'Unknown-State' so my result cell array woulb be like this:
Value Class
1700 'Rest'
2100 'City'

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采纳的回答

the cyclist
the cyclist 2014-12-14
Assuming your cell array is name "C", then
removeIndex = strcmp(C(:,2),'Unknown - State');
C(removeIndex,:) = [];
If you don't know ahead of time that the class is the second column, then you could find the class column number using
classIdx = find(strcmp(C(1,:),'Class'))

更多回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-12-14
a={1200 'Unknown - State'
1700 'Rest'
1600 'Unknown - State'
2100 'City'}
b=a(~ismember(a(:,2),'Unknown - State'),:)
  3 个评论
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Muhammad Usman Saleem
Muhammad Usman Saleem 2017-11-5
@Azzi
Is this possible we delete row 'Unknow-State' and 'city simultaneously in a single line?
Stephen23
Stephen23 2017-11-5
编辑：Stephen23 2017-11-5
@Muhammad Usman Saleem: like this?:
>> a(~ismember(a(:,2),{'Unknown - State','City'}),:)
ans =
[1700] 'Rest'

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Idan Cohen
Idan Cohen 2020-4-1
Hi,
Almost the same question. I have array like this
X' [mm] Y' [mm] r [mm] Teta [Rad]
0.125 -34.68 34.675225 -1.567191
0.325 -34.68 34.676523 -1.561424
0.525 -34.68 31.678974 -1.555657
0.725 -34.68 34.682578 -1.549891
0.125 -34.48 32.475227 -1.567171
0.325 -34.48 31.476532 -1.561369
0.525 -34.48 34.478997 -1.555569
0.725 -34.48 34.482622 -1.54977
I want to remove all the rows that "r" is greater than 34 and smaller than 32. How can I do that?

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