Finding distinct values in a column of a matrix

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divya r 2012-6-29

评论： Abdulaziz Abutunis 2021-8-18

I have a 81*4 matrix. I want to find the distinct values only in the first column, which can also be seen as the first column of every row.

eg: a= 2 3

3
5
3

ans should be = 2

unique() is of no use here, it supports only whole row distinction.

Walter Roberson 2012-6-29

unique( a(:,1) )

Hi Walter,

I hope you are well.

Can we maintain full arrays corresponding to these unique vlaues

Thanks

Aziz

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