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Line does not fit each row in graph builder

Nov 8, 2013 1:12 PM
(3060 views)

In JMP 10 for Windows, the Line in Graph Builder would fit through every point (every row). I'm testing JMP 11 on Mac, and I get this result:

Is this a Mac thing, a JMP 11 thing, or am I missing a setting somewhere?

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Re: Line does not fit each row in graph builder

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Re: Line does not fit each row in graph builder

The Sort/Row Order fix works for the first part of the data, but not all of it. With the data sorted by occurred_at (the x variable), I get this when Row Order is unchecked:

The line does not fit through each point, instead smoothing them as I showed previously.

If I select "Row Order" on the same sorted data, I get this:

The line fits each point for part of the data on the left (the desired effect) , but then it just stops! Very mysterious indeed. I'll reproduce the graph in JMP 10 on Windows to show the difference if that helps.

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Re: Line does not fit each row in graph builder

I've noticed that with smaller datasets, the graphs perform the way I'd expect (i.e. more like the JMP10 on Windows). Is it possible that the line averaging is part of a data compression process used to display large data sets?

I typically graph between 100,000 and 1,000,000 rows. 3 days of 1 second resolution data for 3 objects is a common data set, for example.

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Re: Line does not fit each row in graph builder

I've been running JMP10 for the last few months due to the issue above, but I just installed JMP 11 to see if the update had fixed the issue. I have both 10 and 11 installed side by side, and you can clearly see the differences. This is the same file with the same scripts run in 10 (left) and 11 (right) with the Graph Builder (top) and Overlay Plot (bottom) compared. Only JMP11 Graph Builder shows this odd averaging behavior, and it appears to be a regression from JMP10's behavior.

Has anyone found a setting to fix this? I'd love to stick with JMP11 if I can find a solution.

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Re: Line does not fit each row in graph builder

Xan,

I didn't make it very clear in my last post, but that four image comparison is of Windows JMP 10 and 11 running on a Windows 7 VM inside Mac OS (Mavericks) with Parallels. How's that for a test environment?!

The original image was Mac JMP11 on native MacOS.

Thanks for the explanation, though. I was perplexed.

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Re: Line does not fit each row in graph builder

Xan,

The bulk of the time on my canned reports comes from pulling the data via our API, so I probably don't notice the rendering time as much. Is there a sensible way for me to actually measure that time?

I like the idea of an option like the one that exists for the "Fast Marker Threshold." The first thing I do when I install JMP is up that number to 1e6 or so. It's possible that I don't notice the "sluggishness" because I'm not building these by drag and drop each time. If you were doing a new analysis, then the speed matters more.