Matlab transfer function estimate alternative

[A Former User]

I was coming across Matlab's transfer function estimation, which lets you compare 2 signals and comes up with an estimate for a transfer function! Quite cool for a starting point, when modeling some analog hardware f.e.!

I was wondering if there's other software or libraries, possibly open source, that lets you do the same thing!?? A Matlab license for commercial use is crazy expensive for a small business...

[orange]

@UrsBollhalder GeoGebra is great to see it in action:

System with saturation

Two simple models of a continuous-time memoryless system with saturation. It can be proven those models represent a non-linear time-invariant system.

GeoGebra (www.geogebra.org)

[Dan Korneff]

@UrsBollhalder you can use GNU Octave, which is open source. It has most of the Matlab functions.
https://octave.org/

[A Former User]

@Dan-Korneff Yeah... I just installed this an hour ago via homebrew... It's command-line-only, right?

EDIT: Nope... I think that's just plain wrong what I just said!

[Dan Korneff]

@UrsBollhalder Yup, it's basically a clone of Matlab.

[A Former User]

@Dan-Korneff I saw that it has a signal package, that you can install. It contains a tfe-function that should do the same thing as in MATLAB. Nice!