[Ifeffit] Fwd: problems with setting parameters in new Artemis (Demeter 0.9.16)

Dear All, I am trying to fit the first FT shell in Artemis with a mixture of two different compounds (octahedral and tetrahedral models). I would like to quantify the ratio between this two compounds in my sample so I decided to multiply So2 by a parameter called "a" in one model and by "(1-a)" in the other. I would like to know: 1.- How can I restrain "a" ? I tried to manually add a restraint, but I do not know how to make an interval restraint...( 0http://itq.upv-csic.es Tfno: +34 96 387 7800 Fax: +34 96 387 9444 ----- Terminar mensaje reenviado ----- *** *** *** *** *** *** *** *** *** Cristina Alonso-Escobar. PhD student Instituto de Tecnología Química (UPV-CSIC) Avda. de los Naranjos s/n 46022 Valencia (Spain) http://itq.upv-csic.es Tfno: +34 96 387 7800 Fax: +34 96 387 9444