[rrd-users] adding holt-winters forecasting to existing databases

[Darryl Lewis]

Hi everyone,

I have about 100 rrd's that I'd like to modify and add Holt-Winters forecasting to.
Being that I have a 12 months worth of data in each of them, I'm reluctant to blow them away and start again.
I'd like to modify the existing databases to include 

RRA:HWPREDICT:rows:alpha:beta:seasonal period[:rra-num] 
RRA:SEASONAL:seasonal period:gamma:rra-num 
RRA:DEVSEASONAL:seasonal period:gamma:rra-num 
RRA:DEVPREDICT:rows:rra-num 
RRA:FAILURES:rows:threshold:window length:rra-num 

Does anyone have a script or procedure / set of instructions to add these to existing rrd's?

thanks
Darryl

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