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Using KNN with different buffers in a single MuBu

MuBu
#1

Hello all – I like the new forum format!

When I’m using mubu.concat, say, I can point to different buffers in the same container with the ‘bufferindex’ attribute, which is fine if I want to arbitrarily slice and dice. If I want to use KNN, though, to pick slices in a buffer according to some criteria, I don’t see any way in the documentation to have mubu.knn look at the analysis in a particular buffer. I’m still mentally trying to figure out the MuBu architecture, so I may have missed something, but if anyone could point me in the right direction, I’d appreciate it…

\M

#2

Hi Matt, welcome here!
there’s the “include” message to mubu.knn where you can choose which buffers to index.
Best, Diemo

#3

Ah, I missed it! I was looking in attributes, not messages! And of course, I was looking for ‘bufferindex’…

Thanks, Diemo!

\M

#4

Hello

There may be a bug in mubu.knn where sending it the include message, with all of the mubu container’s buffers, it throws the error no buffers included. if I then send it getBuffers it outputs 0

Can anyone reproduce this behavior? I’m on the latest version in max 8

#5

Also, I am dynamically changing the mubu container and descriptors track on the fly, perhaps that’s related?

I also noticed that when sending the refer mubu-container track-name to mubu.knn, the mubu-container updates but track-name does not

#6

Hi James, can you make a minimal example patch that shows that behaviour?

#7

I realized that I was not setting the weights of the KNN, and by doing so the problem stopped happening. However when I created a small example patch I could not reproduce the problem, so I guess I’m all set for now.

#8

Ok I’d like to second that issue, wanted to upload a patch but the forum doesn’t let me do it, so here’s a screenshot. All I did is send the three include messages one after another from top to bottom and then clicked “getincluded” after each time.

I’m relatively new to mubu so wondering if I got something wrong …?

knntest
knntest.png1916×1022 233 KB

Quick knn questions
#9

I think 0 means all buffers. Tip: use Copy Compressed for patches.

#10

ok great, thanks for getting back about this!