Use of exif_call() to geotag photos

[Bartesto]

Hi Josh,

Firstly thank you for creating this wrapper. We have been keen to add GPS tags to site and drop camera photos for ages and to potentially do it all from R would be brilliant.

I just can't seem to get the exif_call() function to handle this use case, no doubt a syntax issue on my part, and was wondering if you could assist.

I'm using a Windows OS so followed your install instructions and can reproduce your example.

On doing some digging I came across some insight from Phil Harvey which appears to suit my case here.

I attempted to recreate his example by: exif_call(path = "./photos/BHuntley-14-09-19-8310.jpg", args = c("-csv=./photos/position_data.txt", "-gpslatituderef=N", "-gpslongituderef=W"))

The position_data.txt is set up similar to the example but only contains SourceFile, GPSLatitude, and GPSLongitude headers with data for the image specified.

When I run it it gives me the diagnostic "1 image files updated" but when I call exif_read(./photos/BHuntley-14-09-19-8310.jpg, tags = "GPS") it returns no gps related attributes and only the SourceFile name.

I'm doing all of the above within an RStudio project (hence the filepaths).

Any ideas?

Thanks Bart

[Bartesto]

Sorry Josh!

Digging further I found that its working fine. Just needed a wildcard "*" to return all GPS added attributes.

Thanks again.

[JoshOBrien]

@Bartesto

Super! Glad exif_call() ended up working for you and also happy to hear that the package is getting used by others.

-Josh