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  • Image to Table JMP extension imports single or batch images as data tables. Useful to extract curves from pictures or convert image data to curve data to use in analyses like Functional Data Explorer. Download and install the extension.

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Solve problems, and share tips and tricks with other JMP users.
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RonB
Level III

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

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
Level III

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?
txnelson
Super User

Re: Dynamic Time Warping DTW

I assume there is a data issue. My suggestion is to contact JMP support directly
[email protected]
Jim

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