Iterate columns rather than rows?

Hi All
Apologies for what is probably a painfully stupid question, as an almost complete newbie I'm not familar with the intricaies of the SDK but ...
I am building a plugin (primarily for Premiere users) which I think would lend itself better to iteration over columns rather than rows. Is there any built in iterate function that handles this situation, or would this be a situation where coding my own iteration loop could be better?
I ask because I have succesfully built my plugin in AE (using the Shifter example as a basis) and it works but the performance is not great. I've built the same plugin using the Premiere SDK (coding my own iteration loop) and the performance is much better.
Appreciate any idiot friendly tips.
Cheers
Andy

hi Andy! welcome to the forum!
your question is not at all stupid!
there is no API function that would directly iterate over columns instead
of rows.
you'll have to write you own function for that, which is in many ways
better that using a suite, because of the minimal overhead in custom
functions.
you can use "iterate_generic()" to make you code multi-threaded on a column
by column basis.

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