> 10.1/0.1 was successfully calculated
Note that 'computed as' is not the same as 'printed as'. Computations
are
done with 52 binary digits of precision and printing is, by default, done
with
7 decimal digits of precision. See FAQ 7.31.
> 101 - 10.1/0.1
[1] 1.421085e-14
>
(Neglected to cc the list--please reply-all to this version)
What was the warning?
I hazard a guess you've run into precision issues for binary
representation, and the result of your division is not *exactly* 101.
Pat
On Thu, Oct 22, 2020 at 2:42 PM 奈良県奈良市 wrote:
>
> Dear R project team
>
> I
1. Answers on this list are from volunteers who are not part of any R
project team. We have no official status and what we say comes with no
guarantees.
2. There is no such thing as a "matrix 'environment' ".
3. The answer to your question is "computer arithmetic." See FAQ 7.31.
Someone may
Dear R project team
I used the function of "matrix" as follows:
matrix(c(1:3030), 10.1/0.1)
However, in the function, matrix, 10.1/0.1 was regarded as 100 not as 101.
Therefore, a warning message appeared.
On the other hand, matrix(c(1:3030), 101) or matrix(c(1:3030), 10.1*10) was
OK. Of course,
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