Éric Thiébaut

Hello, What I have done in the [`EasyFITS`](https://github.com/emmt/EasyFITS.jl) package is to extend `Base.unsafe_convert` in a spectial way (see [here](https://github.com/emmt/EasyFITS.jl/blob/63dc95a811d41216ba8afaa888e6b791970287e5/src/files.jl#L296C1-L301C1)) so that each time a `fitsfile` pointer is required by a...

Dear Zaikun Zhang, Thank you for your interest and comments. I can only agree: it's absolutely essential that Powell's algorithms are available in modern programming languages, with bug fixes and...

Thanks for your answer. I hope you don't mind if we switch to a more informal conversation (as is usually done on Github issues). I can imagine how painful it...

You are right `npt` indeed!

I now have a premiminary version of a Julia interface that suits my needs and, I hope, others needs as well. The repository is [PRIMA.jl](https://github.com/emmt/PRIMA.jl). It is not yet fully...

The `iprint` issue is now solved for Julia package [PRIMA.jl](https://github.com/emmt/PRIMA.jl) with the 0.7.1 version of PRIMA_jll built by Alexis @amontoison: all the 5 algorithms of the PRIMA library work fine...

Scaling of variables, e.g. to make them of same magnitude, is also of importance for the trust region radius. This can be implemented in the high level interfaces via keywords...

Yes the 2.0 branch is still a work in progress. It is not yet registered and I have disabled lots of tests because some editing is needed before let them...

Oops you are right. I need to do some cleanup. I have also noticed that the doc. is the old one... BTW why are you still pinned to version 1?...

You are right, such a filter is no longer possible with `initial` being the initial value of the state variable of the local filter. I have fixed this in cb364472f902c6d8b900afe073e57061bf5db38c...