Re: [Ifeffit] (Reposted) K-space vs R-spce fitting

2010-09-11 Thread Matt Newville
Hi Juan, The data and model are k-weighted and multiplied by the chosen window function before the least-squares fit. So yes, as you see, the choice of dk will change a k-space fit. I wouldn't expect it to change the results by a huge amount no matter how the fit was done. I would suspect some

[Ifeffit] (Reposted) K-space vs R-spce fitting

2010-09-10 Thread Lezama Pacheco, Juan Salvador
Hi Matt: Thanks so much for your answer. Let's see if I can make it more clear this time. Should dk have an effect on the actual fit, if it is performed in k-space? As I said, I found out that by changing dk (in k space) (keeping (kmin,kmax) constant) values change around 15%, so that tells

Re: [Ifeffit] (Reposted) K-space vs R-spce fitting

2010-09-10 Thread Matt Newville
Hi Juan, On Fri, Sep 10, 2010 at 7:29 PM, Lezama Pacheco, Juan Salvador wrote: > Reposting, just notice no line breaks, sorry! > Juan > Dear All: > First of all, nicely done you guys! This is indeed > a set great of tools the community really appreciates > it and I have been putting into heavy u

[Ifeffit] (Reposted) K-space vs R-spce fitting

2010-09-10 Thread Lezama Pacheco, Juan Salvador
Reposting, just notice no line breaks, sorry! Juan Dear All: First of all, nicely done you guys! This is indeed a set great of tools the community really appreciates it and I have been putting into heavy use. I have and issue though that has been making me scratch my head from time to time