[Ifeffit] Plot multiple fits in (D)Artemis and statistical errors
Nilmar Camilo
nilmar at fis.ufu.br
Fri Oct 26 07:42:05 CDT 2012
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
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