unexpected use of 00:00:01 in a scalar context matlab

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Andrea Sbaragli
Andrea Sbaragli 2021 年 5 月 24 日
コメント済み: Andrea Sbaragli 2021 年 5 月 24 日
if abs(Int12{i,6}- F1{j,1}) <= '00:00:01' why is it not corret?
  1 件のコメント
Daniel Pollard
Daniel Pollard 2021 年 5 月 24 日
Can you give some more context? Since we don't know what Int12 or F1 are, it's not easy to help. What are you trying to do?



Walter Roberson
Walter Roberson 2021 年 5 月 24 日
In MATLAB '00:00:01' is a character vector. When you use a character vector in a numeric expression, most of the time the character vector will have each character converted to the Unicode position number used to encode the character.
ans = 1×8
48 48 58 48 48 58 48 49
You would then be comparing whatever is on the left side of the < to that vector of numbers, getting out a vector of logical results.
If the values you are working with just happen to be datetime objects then subtracting would give a duration object. You can then compare
if abs(Int12{i,6}- F1{j,1}) <= duration('00:00:01')
or more compactly
if abs(Int12{i,6}- F1{j,1}) <= seconds(1)
  1 件のコメント
Andrea Sbaragli
Andrea Sbaragli 2021 年 5 月 24 日


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