How to deal with random spikes in data?

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suresh
suresh on 25 Mar 2013
Commented: Di on 2 Jun 2015
I'm reading really noisy data, with a few anomalies. I'm using SIMULINK and using different filters to get rid of the anomalies, however i get a really bad lag time.
I'm not too worried about the noise right now just getting rid of the anomalies at this moment. I'm thinking of adding a memory block to somehow read the previous value and if it spikes a certain percentage just to hold the previous value, extrapolate a value.
How would I go about doing this, any suggestions?

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