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use the previous result of a function in the calculation

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Matthew Rademacher
Matthew Rademacher on 2 Jul 2020
Edited: David Goodmanson on 2 Jul 2020
I want to perform a calculation: , how can I include the Y(i-1) part? Obviously a loop would work, but my data set is quite large so a loop takes a while to execute.
Is there a better way?

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Answers (1)

David Goodmanson
David Goodmanson on 2 Jul 2020
Edited: David Goodmanson on 2 Jul 2020
Hi Matthew,
there is definitely a better way.
Y = filter(B,[1 -A],X)
Here the assumption is that X is an input vector and B is a scalar constant. See help for filter for the input conventions.

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