I have a set of XY coordinates in a N x 2 matrix

I would like to remove those pairs in which X values are the same

I do not want to use the "unique" function (I tried it but it does not work, perhaps my X values are not exactly the same although they look like they are) and I would not like to use a complicated series of commands…

the code I am using now is

`X1=ampl1;Y1=width1;A1=[X1;Y1]';[UniXY,Index]=unique(A1,'rows');DupIndex=setdiff(1:size(A1,1),Index);A1(DupIndex,:)=[];ampl1=A1(:,1)';widths1=A1(:,2)';`

it seems to work for discrete finite values but somehow for my case, it does not work.

I would not mind to round my values but I would like to keep at least 2-3 decimals

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