I must say, I can't deduce, from what you have said, what the desired
rounding rule is.
The following function does not do what you want, but maybe it's a
little bit related...
rounds
function (x, val = 1)
val * round(x/val)
If
length = 12.2232
and
delta-length = 0.4 (delta minus length, that is)
then it must be that
delta = 11.8232
?
12.2232 rounded to the nearest multiple of 0.4 is 12.4, not 12.2, if
that's what you meant by tolerance.
-Don
At 11:31 PM +0200 5/14/08, Jonas Stein wrote:
i have a table like this of an value and its tolerance
length delta-length
12.2232 0.4
123.422 0.034123
1234 12
i want to round the value to the significant digits in this way:
my-round(length,delta-length)
12.2 , 0.4
123.42 , 0.03
1234 , 12
how can i do this with R?
please CC to email,
thanks so far,
--
Jonas Stein <[EMAIL PROTECTED]>
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--
---------------------------------
Don MacQueen
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062
[EMAIL PROTECTED]
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and provide commented, minimal, self-contained, reproducible code.
