array addition

2011 5 18
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Hello,
I am trying to perform simple array addition inside of my code but I am getting wrong answers because of the negative sign which is suppose to cancel out during the addition still remains in the final answer. can anyone please help.
a =
1.0879
0.0000
-0.0000
0.0000
0.0000
0.0000
-0.0000
0.1072
b =
-0.0879
-0.0000
0.0000
-0.0000
0.0000
-0.0000
0.0000
0.8928
c = a+b
ans 1.0000 -0.0000 0.0000 -0.0000 0.0000 -0.0000 0.0000 1.0000

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Andrei Bobrov
Andrei Bobrov 2011-5-18

0 个投票

c(abs(c)<100*eps)=0

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God'sSon
God'sSon 2011-5-18
thank you very much for your answer. can you kindly explain how it works?
Arnaud Miege
Arnaud Miege 2011-5-18
http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F
Andrei Bobrov
Andrei Bobrov 2011-5-18
Please read the <http://matlab.wikia.com/wiki/FAQ> part
"Why is 0.3 - 0.2 - 0.1 (or similar) not equal to zero?"
God'sSon
God'sSon 2011-5-18
thanks

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