Extract GPS tags from photographs into a CSV file using Exiftool

There is a nice command line utility Exiftool from http://www.sno.phy.queensu.ca/~phil/exiftool/ that can be used to quickly extract out the GPS positions and other tags from photographs and other images into a comma separated values (CSV) file.

The following example uses the Windows executable version of the utility to illustrated the extraction steps.

1. Open up a Windows Command Prompt. In the prompt, type in the command.
   
   C:\> "exiftool(-k).exe" -n -gpslongitude -gpslatitude -gpstimestamp -csv D:\MyDocuments\temp\somephotos
   
   Note:
   -n means to print out as numbers only
   -csv prints out csv including the file path and name
   -D points to the folder directory of the photographs to extract
2. Press RETURN
   
   The extraction values are displayed to the screen.
   
   
3. To output to a file, use the > character to redirect the standard output to a file, e.g. type in the command:
   
   C:\> "exiftool(-k).exe" -n -gpslongitude -gpslatitude -gpstimestamp -csv D:\MyDocuments\temp\somephotos > outgps.csv
   
   The output file outgps.csv is created.
   
4. Display the resultant file in a spreadsheet. Or plot the locations on a map.