ExifTool Forum

ExifTool => ExifTool GUI => Topic started by: BMR_Rogers on November 19, 2017, 10:12:40 PM

Title: GPSAltitude value addition
Post by: BMR_Rogers on November 19, 2017, 10:12:40 PM
Hi there,

I am trying to add extra height to my GPSAltitude tag - due to an inaccurate GPSAltitude data collection

I have reset successfully the GPSAltitude tag to reflect what is held in the Xmp:RelativeAltitude field (70.00 m)

I am now trying to add the take off height of the drone 210.004 m to this value.

I have tried the following command with out any success  via the 'ExifTool direct' option in ExifToolGUI

-n -tagsFromFile @ -GPSAltitude+=210.004 *.*


Is it possible to add sums this way? 

Thanks for any help.
Title: Re: GPSAltitude value addition
Post by: Phil Harvey on November 20, 2017, 07:16:17 AM
Try this:

-gpsaltitude+=210.004

I don't think you are supposed to include the file names when using the "ExifTool Direct" feature of ExifToolGUI.

- Phil
Title: Re: GPSAltitude value addition
Post by: BMR_Rogers on November 20, 2017, 01:32:38 PM
Oohh - that did the trick.

Thanks very much Phil.