Step by Step: GPS tagging Photos and creating PhotoWalk in Google Maps and Picasa

1. Synchronise the time between your camera and GPS. To display the exact time on my Android phone I use TM World Clock (free). I never change the timezone on my camera. Later we allow for timezone offset between camera time and UTC. The more accurate the time on your camera, the more accurate the geo-location will be.
   
   
   
2. Create a GPS log where you've been - I use MyTracks (free) on Android
   
   
3. Export the GPS log twice: to GPX and to KML. Call the file something like gpslog.kml / gpslog.gpx
   
   
   Press the triangle bottom right to bring up the MyTracks menu
   
   
   select Write to SD card, and then press "save a GPX file"
   
   
   
   Repeat to create a KML file
   
   
   
4. Copy these file to your computer. I use Bluetooth, while USB and email works fine as well. If using Bluetooth or USB then the two files are in the MyTracks directory on the SD card/
   
   
   
   
5. Apply the GPS data to your photos - I use GPSPhotoLinker (free) from www.earlyinnovations.com/gpsphotolinker. Its at this point that you apply the UTC offset. If you are away from your home timezone, or DST applies then deselect 'use system time zone'.
   
   
   Click 'Load Tracks' and load your GPX from MyTracks
   
   
   Drag and drop your photos into the right hand window. Then switch to 'batch' and press 'batch save to photos'.
   
   
6. When applying GPS data the date/time stamps on your files will change. I find this annoying so I fix the date / time stamps by using jhead (free) from www.sentex.net/~mwandel/jhead
   
   The command is
   
   /path/to/jhead -ft *.JPG
   
   and / or
   
   /path/to/jhead -ft *.jpg
   
   ie the command is case sensitive
   
   
7. Import / upload to Picasaweb using either Picasa desktop app or the uploader into a new album.
   
   
8. Fire up a browser, navigate to the photos in Picasaweb, and download the KML by clicking "view in Google Earth". When this file has downloaded you need to manually add a .kml at the end. Call the file something like photomap.kml
   
   
9. Goto to maps.google.com and click My Places because we need to upload the Picasaweb KML to My Places
   
   
10. Go to Google Maps eg maps.google.com , and select MyPlaces
    
    
    
    
    
11. Click "Create Map" and then click "Import". Upload your KML file from Picasaweb ie photomap.kml.
    
    
    
    
    
    
    
12. You'll find some junk in the description section, which you can delete and put in your own description
13. Click "Import" again.
    
    
    
    
14. This time upload the GPS track from your logger ie gpslog.kml.
    
    
15. After a few moments processing, the track will overlay with the photos
    
    
16. Click "done" and set sharing options.