[R] Rounding a Measurement to be Consistent with its Uncertainty

[Uwe Ligges]

Tom La Bone wrote:
> I have a measurement of 8165.666 and an uncertainty of 338.9741 (the units of
> both are unimportant). I can easily round the uncertainty to two significant
> digits with signif(338.9741,2), which gives 340. Is there a function in R
> that will take 8165.666 and round it to be consistent with its uncertainty,
> i.e., 8170?

That's not consistent, you have 3 significant digits here, but 2 for the 
"uncertainty" (whatever that is) ...

Uwe Ligges


> 
> Tom