If you fully get your head around exactly what 2d.wave~ does (I admit I haven't :P) then I'm sure you could create a patch that does the same thing with elasticindex~ for playback. Sorry to not be of more help.

I did a search and found this useful thread where Graham Wakefield explains how 2d.wave~ works:

Then mocked up this patch which looks like it's doing the same thing, but I'm not 100% confident about it. I've not included the ability to change the start and end points of the 2d wavetable.

hmm.......

I think this works the same way as 2d.wave~.

Even if it's not entirely the same - it still makes for some awsome mangling!

There is a small insect in the above patch............start point needs to be subtracted from the end point to get the length......

this is awesome! thank you so much for this timlloyd!!

"......start point needs to be subtracted from the end point to get the length......"

For what we need the subtraction?

cheers

Just use this in the sub-patch instead of the old one: