I believe its only for use inside the expr object. It's something to do with smooth controlled curves between points but I don't really know.

@muShoo Are you talking about an object named spline_interp? There's an object named interp that takes an argument named spline e.g. [interp spline].

Actually [interp @mode spline]. It is a four-point smoothing function based on spline functions (Breeuwsma catmull-rom spline). Have a look at gen~.interpolation.maxpat in the examples/gen folder for a patch that shows how the various interp modes are implemented internally.

Nope, there's something in the max Gen~ object docs labelled 'spine_interp" with the exact same description as sah, but it doesn't seem to be a valid object. I'd guess it's just a weird docs typo?

Which documentation page is this in? I'm not finding it right now.

spline_interp will be proposed in the autocompletion list. Create an instance, open the help ballon to get some help, click into the i to open the "gen~ Operators" page with a spline_interp reference in the Filter section (with the same smallish content).

Thanks for the info. This has been fixed for a future release.

Thanks Wesley! (And thanks Patrick for describing my exact method of coming across this).