[Ifeffit] Plot multiple fits in (D)Artemis and statistical errors

[Ravel, Bruce]

Hi,

I am aware of both of these problems.  The tool for overplotting fits from the fit history is currently broken.  So is the tool for restoring an old fit.  Fixing both of those is on my list of things to do.  Sorry for the inconvenience.

B

________________________________________
From: ifeffit-bounces at millenia.cars.aps.anl.gov [ifeffit-bounces at millenia.cars.aps.anl.gov] on behalf of Nilmar Camilo [nilmar at fis.ufu.br]
Sent: Friday, October 26, 2012 8:42 AM
To: ifeffit at millenia.cars.aps.anl.gov
Subject: [Ifeffit] Plot multiple fits in (D)Artemis and statistical errors

Dear Bruce,

I am new in the list and really don’t know if the points raised below were already discussed.
In the (D)Artemis (Demeter version 0.9.13) how may I:

-          Plot different fits with the experimental data (to visually compare the results)

-          I don’t know if this is a (new) bug of the program but when I try to restore a fit the program closes. In the log file the following line is written: “Can't use an undefined value as a HASH reference at C:/Strawberry/perl/site/lib/Demeter/Fit.pm line 1558.”
Obs.:  I am running Demeter in Windows 7 (Pro).

Another problem is related to the statistical errors when constraining the S0^2 parameter to float between two limits.  The program doesn’t return the error for all others parameters (but just zero as the error value) as you can see below:

guess parameters:
  amp                =   0.79284158    # +/-   0.00000000     [0.95]
  enot               =   5.29826510    # +/-   0.00000000     [0]
  delrIn11           =   0.00235278    # +/-   0.00000000     [0]
  ssIn11             =   0.00155959    # +/-   0.00000000     [0.00300]
  delrCe1            =  -0.00231455    # +/-   0.00000000     [0]
  ssCe1              =   0.00192778    # +/-   0.00000000     [0.00300]
  delrIn11In11       =   0.02070081    # +/-   0.00000000     [0]
  delrIr1            =  -0.00435502    # +/-   0.00000000     [0]
  ssIr1              =   0.00386517    # +/-   0.00000000     [0.00300]
  delrIn31           =   0.00648507    # +/-   0.00000000     [0]
  ssIn31             =   0.00669602    # +/-   0.00000000     [0.00300]
  delrIn12           =   0.00255704    # +/-   0.00000000     [0]
  ssIn12             =   0.00305432    # +/-   0.00000000     [0.00300]

def parameters:
  b                  =   0.80000000    # [min(max(0.8,amp),1.0)]


Thanks so much in advance.
Nilmar