Thanks Michael. I am able to do some testing. The first version has a "perform a global fit" button but concurrent versions don't. what is the equivalent? The latest has model 6 and 7 in the place where the "perform a global fit" button was. Whats the take?
Date: Thu, 30 Aug 2012 20:06:25 +0200 From: [email protected] To: [email protected] CC: [email protected] Subject: Re: nessy software Hi Keith Welcome to the mailing list. To make use of the list, you should write the mails @ nessy-users(at)gna.org to make the conversation public to other users. I will answer you questions below: Am 29.08.2012 03:33, schrieb James Nyirenda: Hi Michael, Iam new on the mailing list and i wanted to find out the following: 1. How do you carter for error? suppose you perform a duplicate cpmg disp expt, how do you input the errors generated? Yes, several duplicates have to be recorded at different cpmg frequencies. You can the load each peaklist into the data tab with the corresponding cpmg frequency set up in the set up experiment section. NESSY automatically detects the repetitions (ie data recorded at the same frequency). 2. With the synthetic data generated, i could not correlate the results with those in the manuscript at 5% error e.g in the "Final tab" R2 is 15.311 err is 0.27 .. while in the paper its 15.18 err 0.03 for model 3 at 5%. Or should i assume that synthetic data generation in the nessy software is random? I am surprised that you get such a different error. But yes, data is generated randomly. It also might be a difference whether you generated the on Linux, Mac or Windows. I have generated them on Linux (Ubuntu). 3. The frequencies of the cpmg in the "summary tab" for R2 eff seem to be offset by 1 that is the frequencies start at 0, 25, 50 .. and the R2 eff values rather start in the 50Hz column than the 25 Hz column. This is a bug! Thanks for reporting it! 4. How do you perform experiments with 2 static fields and have the plots appear on one as in your manuscript. The plots are generated automatically. You will have to set up a data set for each experiment. You can do this either by the '+' button in the tool bar or in the data menu (add experiment). You will have to specify the static field for the X atom and NESSY will scale the data accordingly and perform a global fit using all specified fields. I hope this helps. Cheers Michael Are you able to get what am trying to communicate? I am afraid am no where near programming and often am an end user. Find attached the screen shots Kind regards Keith J.
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