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small numbers

2 messages · Marc Jekel, robin hankin

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Dear R Fans,

I have a simple probem but cannot find any reference to the soultion.

I want to do calculations with small numbers (for max likelihood estimations). The lowest value R is storing by default is 1*10^-323, a smaller numer like 1*10^-324 is stored as a 0. How can I circumvent this problem? Is there a way to define how small a number can be in R.

Thanks for a reply in advance,

Marc
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Hi

use the logarithmic representation for your problem.

The Brobdingnag package uses such a form in a (more-or-less)
user-transparent manner.

HTH

rksh
Marc Jekel wrote: