Trip log intervals

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Is the time interval between log entries fixed?
If so, what is it in seconds or milliseconds?
If not, is there a mean or median interval that one can use to calculate the time of day of a log entry?
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Tom Stiller

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Posted 2 years ago

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Jennifer, Alum

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Hey, Tom. Welcome to the community! I'm not sure I completely understand the question. May I ask you to provide more details?
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Tom Stiller

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Thanks for the response.

I've decoded the polyline path contained in the trip download and I'd like to timestamp each of the waypoints. I figured the easiest  way would to keep a running total of the time between points. 

I had hoped there would be a fixed interval between point samples but on closer inspection that doesn't hold up. I'm left with wondering how the dongle decides to record a sample and if I can associate a trip time with that sample after the fact.

Thanks again.
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Jerry, Co-founder

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Hi Tom,

Unfortunately the polyline path is not associated with any timestamps.  The raw data that does include the timestamp is translated into the path to reduce the amount of data transferred over.
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Tom Stiller

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Yeah, I was afraid of that but hoped that I might be able to deduce something from the logging interval. It seems obvious now that the decision to log a position is more complex than a time or distance interval so I guess I'll have to abandon the effort for now.

Thanks  for your input.
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Syed Ali

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This reply was created from a merged topic originally titled is there a way to plot a series of way points and then check in real time when th....
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Jennifer, Alum

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Hi, Syed. Welcome to the community! I've merged your post to this thread with a similar question. Please take a look at Jerry's answer above :)
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Tom Stiller

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I have a Perl script that will produce input files for (free) GPXViewer from a downloaded CSV file. That app will plot the the trackpoints but since there is no (obvious) way to determine the time between points, I have no way to associate a time of day with the points.
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Syed Ali

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That would be awesome Tom.
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Tom Stiller

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It would but it looks like they generate the polyline (which doesn't include time info) on the fly and without a means to reconstruct the time interval between points, I' stuck with just creating a plot of the route,

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