Re: Rietveld

2018-08-21 Thread Alan Hewat
*> credit should be given to Rietveld for developing and distributing his software * No-one is disputing that, even if Rietveld himself never gave credit to anyone else. In Rietveld (1969) he merely `*thanks Drs B. O. Loopstra and B. van Laar for their suggestions and helpful criticism*'. Yet acc

RE: Rietveld

2018-08-21 Thread AlanCoelho
It seems that even the origin of least squares is debateable: https://blog.bookstellyouwhy.com/carl-friedrich-gauss-and-the-method-of-least-squares "That Gauss was the first to define the method of least squares was contested in his day. Adrien-Marie Legendre first published a version of

Re: Rietveld

2018-08-21 Thread Alan Hewat
Scott. If for commercial reasons you don't wish to disclose the details of Panalytical's code, I suggest you reference "code based on the Rietveld code - Rietveld (1969) Reactor Centrum Nederland Report RCN-104 (which contains the original code). My version is on: http://www.ccp14.ac.uk/ccp/web-m

Re: Rietveld

2018-08-21 Thread Alan Hewat
Scott. If you use the code distributed by Rietveld, you should certainly acknowledge it as "the Rietveld program/code" as I did in my Harwell report 1973_The_Rietveld_Program_for_the_Profile_Refinement_of_ Neutron_Diffraction_Powder_Patterns_AERE_R7350-von_Dreele_annotations.pdf

RE: Rietveld

2018-08-21 Thread Scott Speakman
It is interesting to read this conversation and to hear the various points of view. I have one point for consideration to add, and would love to hear the opinion of those who were more closely involved in those early days: I was always under the impression that the nomenclature "Rietveld techn

Re: Rietveld

2018-08-21 Thread Le Bail Armel
The >1500 subscribers can vote... :   https://doodle.com/poll/gh3v3nfhue599w23   Best,   Armel       > Message du 21/08/18 19:10 > De : "Alan Hewat" > A : "rietveld_l@ill.fr" > Copie à : > Objet : Re: Rietveld > > > As a matter of course we didn't took part in the discussion... (Schen

Re: Rietveld

2018-08-21 Thread Alan Hewat
*> As a matter of course we didn't took part in the discussi**on... * (Schenk) *> ...**people pretending now to speak in place **of Loopstra should stop to do so *(Le Bail) What a contrast of style and substance. Late believers are true believers, and Passion evicts Doubt. Seeking sanity, I refer

Re: Rietveld

2018-08-21 Thread Le Bail Armel
Dear Rietvelders,   The last sentence of the van Laar & Schenk paper is  : "It seems to us justified to replace the name ‘Rietveld method’ in the future by the working title of the past: ‘profile method,’ or to honour the inventor by using ‘Loopstra method’." So, shame on Rietveld for having st

[SUSPECTED SPAM] Rietveld

2018-08-21 Thread h . schenk
We were worried that our article was not reaching the powder crystallographers as it was published, although Open Access, in Acta Cryst A. Jim Kaduk advised me to use this excellent list-server, so I became member and posted our message. Now I'm happy to mention that since that day Acta A count