Bulk import of GPX locations (& writing to EXIF)

[Linecutterx]

I'm also considering geotagging individual/multiple items from a GPX file, but only if there's demand for it as it's probably very niche...

Originally posted by @deckerst in #2

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I often use my Garmin watch to log my location & don't always have location turned on, if even available, when I'm taking photos. (Those can also be imports from an SLR, which doesn't have inbuilt GPS)
I could use Digikam/similar at home, but that would need to wait for days if I'm taking photos on holiday for example

Describe the solution you'd like
Select photos. Chose location option from menu. Have an option to load a GPX file & pick a time offset. Show the result on a map, to check accuracy. Then accept the writing to EXIF for the files.

Describe alternatives you've considered
Digikam. Exiftool etc via Android CLI. Aves, one photo at a time, manually

[deckerst]

Could you provide a sample GPX file?

[Linecutterx]

Of course!
I've just created one, with the GPS on my phone on & off at different points (so some photos should be tagged with a location, for comparison).
Can zip & send them to you, or share them another way. Or just send the GPX if that's all you need.
Let me know!

[deckerst]

Having a real set of images and the GPX that go with them would be sweet. You can send them to me as a zip (or a link to it) directly here, or via email if you prefer.

[deckerst]

Is it expected for elevation to also be imported from the GPX?
I'd say it's technically possible, but for now elevation is not editable anywhere else in Aves and not displayed either (except when digging in the Exif GPS details).

[Linecutterx]

No, I'd not expect elevation data.

AFAIK any given GPS coordinate can only have the one elevation, so having it imported adds little/nothing to the question: where did I take this photo from?

Not that I'd object if it was added from the GPS track. 😎

GPS derived elevation (done direct from the GPS receiver) is pretty approximate! I think that elevation is usually derived from looking up the elevation of the coordinates, in a database. Could also use barometric pressure (which the Garmin data will have access to & is likely where the information in the track comes from).

[deckerst]

pick a time offset

Do you actually need this for time zone correction? From the sample you gave me, it seems the dates in the GPX are already in the correct time zone, with regards to the dates of the photos.

[Linecutterx]

My SLR has a mind of it's own when it comes to time stamping photos (probably partly because it doesn't have any way to check the correct time). However, I can pull photos off of it with Bluetooth, even on holiday.

The phone photos that I sent should align perfectly with the watch track (they share a time sync signal), but assume that I might end up needing a +1:17 offset to get the GPS location to match the place that I know that I took the SLR photo & you'll be correct more often than I'd like.