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RonB
Community Trekker

Dynamic Time Warping DTW

I'm a bit confused about how to use DTW.

 

My data ~300K rows with:

1st column - test number 1 to 4

2nd column - time. For each test, time starts at 0 and goes up in increments of 0.2 ms.

Eight columns of measurements.

Rows are ordered by test and time.

 

What is the proper way to align with DTW?

 

Thanks

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3 REPLIES 3
txnelson
Super User

Re: Dynamic Time Warping DTW

The Functional Data Explorer Platform allows for multiple data table formats to be used.  From your description, your data appears to be in a Stacked format.  

Specifying your measurement columns as the Y variables, and your Test column as the ID variable, you should be able to get your response.

I suggest you read the Functional Data Explorer section in the  "Predictive and Specialized Modeling" book.

     Help==>Books==>Predictive and Specialized Modeling

Jim
RonB
Community Trekker

Re: Dynamic Time Warping DTW

Thanks, that helped.
Alas, DTW on my complete data set (300K rows) gives an error "to process DTW". No such error when I DTW a smaller subset. Any idea what might cause that error?
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txnelson
Super User

Re: Dynamic Time Warping DTW

I assume there is a data issue. My suggestion is to contact JMP support directly
Support@jmp.com
Jim
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