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Im trying to create a patch that allows me to change desired pixels in a jitter matrix using a large list from max. Ive looked at the jit.matrix help file and tried different ways of applying the setcell message but cannot achieve what I desire. Ive attached a much more simplified version of my patch to show what i am trying to achieve. could anyone please help?

Im  trying to create a patch that allows me to change desired pixels in a jitter matrix using a large list from max. Ive looked at the jit.matrix help file and tried different ways of applying the setcell message but cannot achieve what I desire. Ive attached a much more simplified version of my patch to show what i am trying to achieve. could anyone please help?
Thanks in advance
Lee


change-jitter-matrix-using-a-large-list-from-max

Use [zl.iter 3] to iterate the list in groups of 3 and use changeable args ($1 $2 $3) to construct setcell messages. Be sure to bump the zl object attribute @zlmaxsize if your lists are larger than 256 characters.

Use [zl.iter 3] to iterate the list in groups of 3 and use changeable args ($1 $2 $3) to construct setcell messages.   Be sure to bump the zl object attribute @zlmaxsize if your lists are larger than 256 characters.

thanks so much for your speedy reply, that works brilliant for a small amount of changes, but I am trying to be able to change all 4096 pixels :/ The patch I am trying to build will take a still image and black out random pixels, however the random ratio will increase over time. So from the beginning only a few pixels will black out, and the change metro will be fast, but then the change metro will slow down and the amount of blacked out pixels will increase. The patch has become really large and max quits a lot whilst running it, I bet there is a jitter effect that I could use to achieve the same effect in far less patching, but I am very novice when it comes to jitter. have you any Ideas at all. I've added both abstractions needed for the patch and the patch itself. the main patch is the "this is not a pipe" one, the other two are abstractions.

thanks so much for your speedy reply, that works brilliant for a small amount of changes, but I am trying to be able to change all 4096 pixels :/  The patch I am trying to build will take a still image and black out random pixels, however the random ratio will increase over time. So from the beginning only a few pixels will black out, and the change metro will be fast, but then the change metro will slow down and the amount of blacked out pixels will increase. The patch has become really large and max quits a lot whilst running it, I bet there is a jitter effect that I could use to achieve the same effect in far less patching, but I am very novice when it comes to jitter. have you any Ideas at all. I've added both abstractions needed for the patch and the patch itself. the main patch is the "this is not a pipe" one, the other two are abstractions.
thanks in advance
Lee


Lee, I just took a look at your patches. I don't think [piperandom] is the answer. You should be able to do most of your random cell processing within Jitter. Lists slow things down.. especially when they are generated in dozens of nested patchers and are 12000+ chars long.

Some objects that come to mind are... [jit.noise], [jit.op] and [jit.submatrix]. I'll give it some thought. Maybe someone with more Jitter experience has a good solution. I like the question.

Lee,  I just took a look at your patches.   I don't think [piperandom] is the answer.     You should be able to do most of your random cell processing within Jitter.  Lists slow things down.. especially when they are generated in dozens of nested patchers and are 12000+ chars long. 

Some objects that come to mind are...  [jit.noise],  [jit.op] and  [jit.submatrix].    I'll give it some thought.  Maybe someone with more Jitter experience has a good solution.  I like the question.


thanks again, I've looked into [jit.noise] and its looking like the best route. I've simplified the query here 

https://cycling74.com/forums/mix-jit-noise-with-jit-qt-movie/

 the patch is an art piece based around the paradox of the B theory of time, that I believe Alfred North Whitehead highlights in "The Concepts Of Nature", I'm trying to do a visual representation of slowing time down to an un imaginably slow pace (moleculor event time) my heads playing around with the possibility of seeing time in two ways (event time IE E=MC^2) then a constant undetectable time that unifies the rest. I'm not buying B theory one bit. ha ha ha. anyway thats why I'm so curious as to build what is in reality a very boring patch as its more what it metaphors. thanks again for all your help

thanks again, I've looked into [jit.noise] and its looking like the best route. I've simplified the query here https://cycling74.com/forums/mix-jit-noise-with-jit-qt-movie/  the patch is an art piece based around the paradox of the B theory of time, that I believe Alfred North Whitehead highlights in "The Concepts Of Nature", I'm trying to do a visual representation of slowing time down to an un imaginably slow pace (moleculor event time) my heads playing around with the possibility of seeing time in two ways (event time IE E=MC^2) then a constant undetectable time that unifies the rest. I'm not buying B theory one bit. ha ha ha. anyway thats why I'm so curious as to build what is in reality a very boring patch as its more what it metaphors. thanks again for all your help
Lee


https://cycling74.com/forums/reply/re-photobooth-style-background-subtraction-difference-matte-5/

https://cycling74.com/forums/video-sequencer/

Cool.   Also check out:
https://cycling74.com/forums/reply/re-photobooth-style-background-subtraction-difference-matte-5/
https://cycling74.com/forums/video-sequencer/


brilliant got it working, heres the working patch

brilliant got it working, heres the working patch
thanks so much
Lee


change jitter matrix using a large list from max