How to delete repeating column or duplicate column in MATLAB? of type Double

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raghavendra kandukuri
评论： dpb 2022-8-28
Hi,
How to delete the repeating or duplicate columns in matrix, is there any function in MATLAB?, for example in the input array row 2 are basically the occurance or row 1 values, so i am basically counting how many times that partiuclar value in row 1 has appeared in row 1.
Thanks in Advance
input array:
2 2 5 1 1 3 4 3 4
2 2 1 2 2 2 2 2 2
output array:
2 5 1 3 4
2 1 2 2 2
or more precise
1 2 3 4 5
2 2 2 2 1

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采纳的回答

Matt J
Matt J 2019-5-17
编辑：Matt J 2019-5-17
output_array=unique(input_array.','rows').'
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omran alshalabi
omran alshalabi 2022-8-28
编辑：dpb 2022-8-28
how to code to delet repeating value in a row like this:
from
a = [1 2 2 4 4 2 2 1 1 4 4 ]
become
b = [1 2 4 2 1 4]
dpb
dpb 2022-8-28
Ran in:
This really should be a new Q? because to Answer here isn't responsive to the original -- but...
a = [1 2 2 4 4 2 2 1 1 4 4 ] ;
ix=find(diff(a));
a([1 ix+1])
ans = 1×6
1 2 4 2 1 4

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更多回答（1 个）

dpb
dpb 2019-5-17
编辑：dpb 2019-5-17
>> uA=unique(A);
>> B=[uA;histc(A,uA)]
B =
1 2 3 4 5
2 2 2 2 1
>>
ADDENDUM: Above works with only the first row and computes the counts on the presumption they had to have been obtained somewhere before to have been posted...

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