[GSAS-II] "copy results to next histogram" option: Unexpected behavior

[Ivo Alxneit]

Dear all

I performed a sequential refinement (7 batches with 1250 histograms
each, results are spliced together). During the nth refinement I refined
cell parameters of one of the phases (phase A). The result, see blue
curve of attached pdf. During the next refinement I removed these cell
parameters from the list of the parameters to be refined but refined
other parameters. I also selected the "copy results to next histogram"
option. Unexpectedly, I find that also the cell parameters of phase A
have been copied forward during the refinement (red curve in pdf): For
each batch the result of the first histogram is used throughout the
whole batch leading to the horizontal segments in the red curve. Is this
really the intended behavior? I would expect that only refined
parameters are copied forward to be used as starting values. Non-refined
parameters should not be touched.

Any clarification appreciated.

Ivo
-- 
Dr. Ivo Alxneit
Catalysis for Energy Group
Bioenergy and Catalysis Laboratory        phone: +41 56 310 4092
Paul Scherrer Institute                     fax: +41 56 310 2688
CH-5232 Villigen                      gnupg key: 0x515E30C7
Switzerland
https://www.psi.ch/ceg/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: problem.pdf
Type: application/pdf
Size: 75485 bytes
Desc: not available
URL: <http://mailman.aps.anl.gov/pipermail/gsas-ii/attachments/20190924/d689273b/attachment-0001.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: OpenPGP digital signature
URL: <http://mailman.aps.anl.gov/pipermail/gsas-ii/attachments/20190924/d689273b/attachment-0001.sig>