A_ldiv_B! with sparse matrices
optimization,linear-algebra,julia-lang,factorization,levenberg-marquardt
It can be a bit tricky to figure out exactly which code path is taken when your are running into code that uses substitutions during parsing as is the case for '. You could try julia> ( J'*J + sqrt(100)*DtD ) \ -J'fcur to see another substitution taking place. I...
nlsLM giving error: attempt to use zero-length variable name - Black Scholes Model Fit
Found the answer...There is a line in the nlsLM function: for (i in names(start)) assign(i, start[[i]], envir = startEnv) The problem was the start provided in my formula did not have a name, b. I thought by using the list command that would resolve the issue. I have corrected it...