Error while using variables inside "ismember"

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Sarthak De
Sarthak De 2019-5-8
评论： Sarthak De 2019-5-9
The "ismember" function is not reading values when they are assigned to variables after simple arithmertic operations.
a=csvread('....\ATR.csv'); %it is a 230x2 array (acc. the data set I'm using)
a=unique(a,'rows','stable') %it is reduced to 176x2 array
ismember([69.7 21.5],a,'rows') % returns true as the matrix specified is in a
ismember([69.6+0.1 21.4+0.1],a,'rows') %returns false, but the data point after the arithmetic operations exists in a
ax=69.6;
ay=21.6;
ismember([ax ay],a,'rows') % returns true as the matrix specidied is in my data
ax=ax+0.1; ay=ay-0.1;
ismember([ax ay],a,'rows') % returns false but the matrix specified is in my data

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