Hi, The importance of the precision is an important, debatable concept which I'm sure there will be many opinions about. It really boils down to where precision matters and where does it not matter. If you are using curvefit, though, you have no choice in precision as the program sees its output as the 'final' result. For me, I follow just one basic rule. This was an idea that was instilled within my young mind many, many years ago by the advice of an old and wise person I once knew (my old school teacher). That important concept was that one must never round-off numbers until the very end.
So my philosophy with this type of analysis is that the start is the NMR machine, and the end is the numbers placed in the manuscript (although some may argue that the start is the DNA). Hence you'll see this throughout relax, that the numbers in all results files are never truncated. This allows one to follow the important concept from above in all cases, even if you do something completely different with relax. Round-off error is best avoided at all costs. I hope this helps. Regards, Edward On 10/24/07, Douglas Kojetin <[EMAIL PROTECTED]> wrote: > Hi, > > How important is precision for the input relaxation data (r1, r2, > noe) for relax analysis? My values were calculated using curvefit, > with values using 4 decimal places. On the other hand, relax curve > fitting produces rates with many more decimal places (16). > > Thanks, > Doug > > _______________________________________________ > relax (http://nmr-relax.com) > > This is the relax-users mailing list > [email protected] > > To unsubscribe from this list, get a password > reminder, or change your subscription options, > visit the list information page at > https://mail.gna.org/listinfo/relax-users > _______________________________________________ relax (http://nmr-relax.com) This is the relax-users mailing list [email protected] To unsubscribe from this list, get a password reminder, or change your subscription options, visit the list information page at https://mail.gna.org/listinfo/relax-users
