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Digital filtering in Matlab

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radiohead

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Hi,

I have some data in tow arrays, containing the data and timestamp. For example
data(1)=10
timestamp(1)=100
data(2)=11
timestamp(2)=110
et cetera

I want to filter the data using FIR/IIR implementations. For this two things need to be done
* Extend the data series, so for t=100...109 data=100
* Do the filtering

Is there an efficient way to do this processing in matlab directly on the first data, without the time-consuming step of generating the intermediary array (10,10,10,10,10,10,10,10,10,10,11,11,11,....)?

Thanks
 

Thanks, but I don't need to design a filter, I have it. I would like to have an answer to the specific question above.
 

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