ImageWidth returns the image width in pixels.GPSLongitude returns GPS Longitude as rationals, e.g.GPSLatitude returns GPS Latitude as rationals, e.g.The direction is represented by a rational, e.g. GPSImgDirection returns the direction of the image when captured as a rational.read_exif('', ''), where EXIF tag string defines the EXIF property, such as:.read_exif_longitude('') returns GPS Longitude as a decimal number.read_exif_latitude('') returns GPS Latitude as a decimal number.The direction is represented by a number. read_exif_img_direction('') returns the direction of the image when captured.Once you capture a photo during the field survey, the EXIF metadata values will be automatically filled in:ĮXIF function supported by Mergin Maps Input: This is OK, Mergin Maps Input will know what to do with it! The preview shows a warning Function is not known. The absolute path can be defined using the field where the image is stored (here: photo, this is a text field with attachment widget) and the variable that refers to the project home folder.įor example, the default value expression for the direction of the image (EXIF tag GPSImgDirection) can be defined as + '/' + "photo", 'GPSImgDirection') This expression requires the absolute path to an image. In general, EXIF functions looks like this: Supported EXIF functions are listed below. Now we need to set the default values of fields that should store EXIF metadata. In QGIS, open the Properties of your survey layer and navigate to the Attributes Form tab. To store EXIF metadata values in the fields of your survey layer:
#Besty exif app how to#
Clone documentation/exif-metadata (opens new window) to see how it works! # How to use EXIF metadata
0 kommentar(er)
