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mendhak / gpslogger

:satellite: Lightweight GPS Logging Application For Android.
https://gpslogger.app
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Question: Does the accuracy-filter try to maximize accuracy or does it simply log as soon as possible? #860

Open rekcodocker opened 3 years ago

rekcodocker commented 3 years ago

A question.
How does the accuracy-filter work?
I have it set to 30m. I do not want to miss dozens of points because I happen to have a poor GPS signal for a while.

My question: Does this mean that when the accuracy is 28m, GPSlogger will immedately log the point - or will it still try to get a better reading? I would prefer if it did this:

DO
    Get GPS reading
WHILE accuracy is better than previous reading, REPEAT
# we now have the most accurate reading possible
if (accuracy is better than accuracy-filter-setting) THEN
   Log the point

so even though the accuracy-criterium is met, it still tries to do better. Does it work like that?

Or is it more like: GPS-logger: Give me a reading GPS-device, ok, it's not accurate yet, but here it is GPS-logger: Whohoo! Done! GPS-device: Wait, I got a much better one! GPS-logger: No, enough is enough! I'm done!

mendhak commented 3 years ago

Sorry for late reply. The answer is it logs as soon as possible. There is another setting in there called 'Duration to match accuracy' (60 seconds) - and the code will keep trying for a maximum of 60 seconds, until it finds a matching point, then stop logging. That's done to save on battery otherwise each location fix becomes very expensive.