id summary reporter owner description type status priority milestone component resolution keywords cc workpackage 1107 Doubts about Onion Doc Joachim Wuttke "quite generally: to facilitate citation and discussion, I'd suggest to number equations in doc pages that contain lots of them. concerning http://marketplace.sasview.org/models/73: The introduction announces that the SLD of each shell may be »described by an exponential, linear, or constant function«. In the following, however, only only the exponential and the constant case are explicitly covered. For a linear SLD, the reader is left with the hint that the exponential function with small A is a good approximation. rho_shell(r) is defined in terms of six parameters. One of them is redundant since rho_in=B+C. The parameters B and C have no obvious physical meaning, and they do not appear in the parameter list of Iq. Two equation blocks later, the paremeter B is defined a second time, now in terms of rho_in, rho_out, and A. This makes the logic very obscure. I would suggest that rho_shell(r) be defined in terms of the parameters A, rho_in, rho_out, r_in, r_out. Then one would introduce Delta t_shell, B, and C as abbreviations, which makes them categorically distinct from the API parameters. - Joachim" defect new minor SasView 4.3.0 sasmodels SasModels Model Issues