Comparison of statistical software

Dear Dr. Granville, the Stata / SPSS implementation of non-linear regression is quite inflexible. The SPSS implementation is especially bad, allowing one to type only simple, non-recursive functions in a pop-up window. If you got a project about implementing a non-linear regression for a complex functional form, you would use R, Matlab or a similar programming language. Following the general vibe of responses, I changed the "Non-linear Regression / SPSS" field to "Limited" to avoid potential misinterpretations of the table. However, the truth is: the SPSS implementation of non-linear regression is unsatisfactory for most industry-level research. Lasso is available in SPSS only as part of categorical regression, which does not cover linear regression and generalized linear models.