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issue in find variable

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Muhammad Usman Gul
Muhammad Usman Gul 2020-7-22
关闭： MATLAB Answer Bot 2021-8-20
  2 个评论
Muhammad Usman Gul
Muhammad Usman Gul 2020-7-22
Please explain to me why it gives me an empty matrix? Out of 100 only following 25 thresholds are also gives empty matrix
0.0600, 0.0700, 0.1000, 0.1500, 0.1800, 0.2100, 0.2400, 0.2900, 0.3500, 0.3600, 0.4100, 0.4200, 0.4700, 0.4800, 0.5700, 0.5800, 0.6900, 0.7000, 0.7100, 0.8200, 0.8300, 0.8400, 0.9400, 0.9500, 0.9600

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回答（1 个）

Fangjun Jiang
Fangjun Jiang 2020-7-22
编辑：Fangjun Jiang 2020-7-22
floating point data precision issue. Below is an example, a and b are not equal even though all the visible digits are the same.
>> format long
>> a=1-1/3
a =
0.666666666666667
>> b=2/3
b =
0.666666666666667
>> a==b
ans =
logical
0
>> abs(a-b)<=eps
ans =
logical
1
  3 个评论
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Muhammad Usman Gul
Muhammad Usman Gul 2020-7-22
Its work, Thanks all of you

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