You might consider using the 'bit' library and use two bits per base.  You
could then wrap this in an object with appropriate functions (bit.`[`,
etc.).

           -s

On Wed, Dec 24, 2008 at 10:26 AM, Gundala Viswanath <gunda...@gmail.com>wrote:

> Dear all,
>
> What's the R way to compress the string into smaller 2~3 char/digit length.
> In particular I want to compress string of length >=30 characters,
> e.g. ACGATACGGCGACCACCGAGATCTACACTCTTCC
>
> The reason I want to do that is because, there are billions
> of such string I want to print out. And I need to save disk space.
>
> - Gundala Viswanath
> Jakarta - Indonesia
>
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