We have been trying to do Rietveld refinement on a laboratory PXRD sample and we have used a separate background .xy file to fit the background. We used the macros bkg_file("myBackground.xy",@, 0.99320`).
We were able to get the basic cif using Out_CIF_STR(BASIC.cif) macro. However, when we try to get the cif using Out_pdCIF(xxx.cif) we get the following error.
TOPAS-64 Version 6 (c) 1992-2016 Alan A. Coelho
Maximum number of threads 8
Constant x-axis step size detected for xy/xye file
Internally changing to constant x-axis step size for efficiency
Loading xyz's for p n m a from file C:\TOPAS_6\sg\pnma.sg
We generated the background .xy file from FullProf studio. It would be great if we can fix this.