how to find intersection point or value between two array????
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I have two array as A and B, where,
A=[1.2222 1.2233 1.3344 1.3354 1.4354]
B=[1.1123 1.2234 1.3254 1.4892 1.5678]
I want 2nd element of A and B to intersect but as A's value is not exact equal to B i am not able to plot my graph. as, A's 2nd value is 1.2233 and B's 2nd value is 1.2234 which is almost equal so i want to put a condition as to search equality till 3rd value after decimal.
please please help me
采纳的回答
AA=floor(A*1000);
BB=floor(B*1000);
find(AA==BB),
更多回答（2 个）
Steven Lord
2015-8-27
1 个投票
Take a look at the ISMEMBERTOL and UNIQUETOL functions.
Star Strider
2015-8-27
One possibility:
roundn = @(x,n) 10.^-n.*round(x.*10.^n);
A=[1.2222 1.2233 1.3344 1.3354 1.4354];
B=[1.1123 1.2234 1.3254 1.4892 1.5678];
ABI = intersect(roundn(A,3), roundn(B,3))
ABI =
1.2230
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