how to find intersection point or value between two array????

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suchismita
suchismita 2015-8-27
回答： Steven Lord 2015-8-27
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

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采纳的回答

Matt J
Matt J 2015-8-27
编辑：Matt J 2015-8-27
AA=floor(A*1000);
BB=floor(B*1000);
find(AA==BB),

更多回答（2 个）

Steven Lord
Steven Lord 2015-8-27
Take a look at the ISMEMBERTOL and UNIQUETOL functions.
Star Strider
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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