Hi,
>And no, Rietveld didn't invent an intensity extraction algorithm later used by >LeBail; Pawley's code predated LeBail, and both are more related to classical >ideas of peak extraction than to Rietveld. I would personnally agree with Brian and reformulate : And yes, Rietveld invented an intensity extraction algorithm (his “observed” intensities are used in RB and RF calculations) later used by Le Bail; Pawley's code predated Le Bail, and the latter is more related to Rietveld than to classical ideas of peak extraction. See formula (1) taken from Rietveld and inserted with proper reference into : https://www.cambridge.org/core/services/aop-cambridge-core/content/view/6AFF43669BB08DC74CB59A7210CCB662/S0885715600002980a.pdf/div-class-title-whole-powder-pattern-decomposition-methods-and-applications-a-retrospection-div.pdf http://www.cristal.org/iniref/lbm-story/ Armel
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