Module: EXIF GPS

The EXIF_GPS module is a Gallery 3 module which will extract Latitude and Longitude information from a photos exif data. The data will be automatically extracted from photos as they're uploaded, if it's present. Additionally, a maintenance task is available to scan the entire Gallery 3 library for photos that were uploaded before this module is active, in order to extract GPS data from older pictures. This module also allows users to manually assign Latitude and Longitude values by using the edit menu option (Edit photo, Edit album, etc). The stored coordinates are then used to display a small google map in the sidebar, showing where the photo was taken. Also, for anyone using my TagsMap module, the sidebar is TagsMap aware -- in the event that the current item does not have exif coordinates associated with it, but does have a gps-tagged tag assigned to it, the coordinates from the tag will be used instead.

[img]http://codex.gallery2.org/images/0/00/Exifgps.jpg[/img]

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If I change locale to US, then the picture files imported when US is default locale get correct coordinates.

I don't know where the bug is, but when changing locale (to ex. no_NO), only the *shown* coordianates should use comma as decimal separator. The saved EXIF values should always remain decimal point.

It did the trick, it's working now! Thanks!

Does iPhone 3G s create GPS exif for photos taken by iP?

Rwatcher: is it possible to join related modules into one? Exif, Exif_GPS, Tags, Tagsmap, Tag faces etc.

This will provide a more smooth upgrading proces, one thread to keep track of and in time, integrated documentation, menu display in sidebar etc etc.

I thought of activation, deactivation inside this complete module and maybe some doc inside admin to give people a clue.

all the best
HB - http://www.image.agentura.dk

iPhone users that use a non geotagging camera might want to have a look at this:
http://www.saltpepper.net/geotag/

I have requested this for windows. Note if you use windows, don't buy the app yet. I have requested this for windows and I will lt you know here. Didn't mean to advertise, but might be usefull info for some...

all the best
HB - http://www.image.agentura.dk

This is something I have been hoping to see appear for some time. Thanks for getting it started, rWatcher. I have a few suggestions for enhancements, if they are possible:
1) I would suggest trying to offer Google Maps' standard controls on the map (for example, zoom in/out, and drag to move the map).
2) I would also suggest having an admin setting to choose a default zoom level
3) I would suggest that the "Location" sidebar header be hidden if there is no GPS info for the current photo.

Would it be possible for you to post a sample photo with non-working coordinates? Lines 55-60 are supposed to account for negative coordinates, but I guess it's not working properly for some reason.

This would be great, it's one of the things I would really like to have before considering a change to G3. One thing to note tho is that while I love the G2 module's map of my images, it *really* bogs down when you get a couple of hundred geotagged images in an album (in part because it draws every single image on the map...picture 5000 pinpoints on a google map). I seem to recall that Coppermine's similar functionality is somewhat more reasonable and has a way of filtering close points to speed up the rendering...it might be worth taking a look at what it does (this is from meory, it has been a long time since I looked).

Thanks a bunch for working on this!

I second pinn8's suggestion (link to maps.google.com). I just installed with RC1 and only see the pink marker in a field of green. http://knobby.ws/gallery3/album/2007-05-19-at-13-47-48. (I'm not seeing the EXIF GPS module display for pinn8's example.)

Great module. Glad to see GPS support for G3.

The module attaches itself to the item_created and item_deleted events (which G2 import must be invoking), so there isn't really any way for the module to distinguish between regular photo uploads and the G2 Import module. You could disable the exif gps module, run the G2 Import, then re-enable exif gps and run the maintenance option to scan your existing photos.

I suppose that depends on how the Gallery is being used. The module scans photos on upload/import mostly because I modeled it after the EXIF module, and that's how it works. The only way I can think of to do "later processing" would be to flag photos in the database as "un-scanned" when they're uploaded, and then create a maintenance script for an admin to run to extract the coordinates. Personally, I think having the coordinates extracted immediately is a lot more convenient, especially if a Gallery has multiple non-admin users who would be stuck waiting for the admin to log in a click a scan button.

Changed and committed to my github, thanks I'll post an updated zip file here once I finish up the album mapping code I was working on.

Did you try to resume the task? Maintenance scripts sometimes stall when dealing with a large number of photos.

I fully support bringing related smaller modules together. Otherwise we will end up having a new module for every codeline.

Serge: if I understand you correct. The main tagsmodule now has this block inside? But only in your install. If there is a thread for that module, maybe you could up the code there and post alink here.

all the best
HB - http://www.image.agentura.dk

Rwatcher: I have a number of tags where I defined location myself. Tags Module I guess. If geolocation is not in Image it grabs one of my definitions.

What I do when tagging is starting from outside and moving in. Example

Denmark - Copenhagen - National Museum

In this example this module grabs the first it finds, being the least significant/precise. Can this be sorted in a clever way that I can't really think of right now? Btw. I tag outside Gallery, so that tags are in the Jpeg at import if that matters

Tags created in G3 are they included in the jpeg file or is it lost if jpeg leaves G3?

all the best
HB - http://www.image.agentura.dk

If possible to bring it to the file it would be a strong feature...

Rebuilding a site with lost DB end tagging over would be one of the worst I can think of. also if lattitude and longitude could be returned to the file, could be strong

all the best
HB - http://www.image.agentura.dk

Yes, this issue should now be fixed on my github. I'll post an updated .zip file here shortly.

Thanks for supporting G3 and continuing updates. And thanks for the link to the file in your posting. Saves having to figure out where it lives. Now uploading:

Greatly improved. Customization is great. And it came up hybrid by default which is probably a good choice since many photos are not near roads.

One odd quirk. I can drag the little arrow key from the drop down menu. Safari and Firefox on a Mac.

And Map This Album. A great feature. I haven't seen anything as well implemented as this. This feature could change how I organize some albums. One minor quibble, the cookie crumb link (is this the right term?) or some other direct way to get back to the album is missing. I see if you can get there by clicking on a pin and clicking on the photo.

Something to think about if you love coding: At the album level show the map with pins for all the photos in the album. One difficulty could be nested albums.

One last one: a pop-up in the admin panel to define the zoom level (or a link) or change to so many km by km or similar. I just tried to find out how to interpret the zoom level and on five different pages I didn't see anything that gets one where they need to be. I have so far found out 0 is coarse and 23 maybe the finest. So even that info would be helpful. Change the admin page to:
Default Zoom Level: 0 is largest scale, 23 finest.
Or something similar.

Thanks for a great module.

Nicely done!

Check this

Looks like it's not possible to translate "Map this album" and "Map <name>'s photos". Or am I missing something?

I can reproduce this under windows with Safari as well, but it snaps back to where it is supposed to be once I release the mouse. I can also drag around the "Powered by Google" image as well, so I'm thinking this is probably how the browser is designed to work.

I can't use the "cookie crumb" links as they're not designed to be used outside of album/photo view pages. I have added a "Return to album" link below the map though.

I thought about doing this originally, but when an album has a lot of photos in it, it just becomes too many red markers on too small of a map. You can manually specify a single location to display via the Edit album dialog though.

According to Google:
http://code.google.com/apis/maps/documentation/upgrade.html#ZoomLevelOrder:

Zoom level indices in GMap2 start with 0 at the coarsest level, not at the finest. 
This allows maps of arbitrarily high resolution, which will let us more easily introduce 
high resolution imagery.

http://code.google.com/apis/maps/documentation/introduction.html

Each map also contains a zoom level, which defines the resolution of the current 
view. Zoom levels between 0 (the lowest zoom level, in which the entire world can be seen 
on one map) to 19 (the highest zoom level, down to individual buildings) are possible within 
the normal maps view. Zoom levels vary depending on where in the world you're looking, as data 
in some parts of the globe is more defined than in others. Zoom levels up to 20 are possible 
within satellite view.

So basically the upper limit depends on the map type, and changes occasionally when google decides to add more detailed imagery. I have now added some additional text to the bottom of the admin screen to provide a general idea of how the zoom level works, but you really just have to experiment with different values and see what looks best with the map type you're using and the area most of your photos were taken in.

Sorry, must have missed that one. Everything should be translatable now

After clearing the exif_coordinates tabels and rescanning, all my items are being displayed correctly on the map now. Thanks a lot! And the new features are great to!

Thank you so much for your hard work !!!

This makes g3 so picasaweb in regard to the mapping stuff ...

However I would second the request of MtnBiker concerning the Album Map. Even if there are many markers because of many pics inside the album it would be nice to see roughly how the pics spread over a certain area which would mean the zoom should be automatically chosen depending on the area size - like picasaweb does ..

Cool, glad to hear it's working

It _should_ automatically select a starting zoom level that displays everything on the current map. Is it not doing that? If it's not auto-zooming properly, what map type are you using, and would it be possible to get a link to an album that's not zooming correctly?

toolbar area --> Where do you mean by toolbar area? Where the slideshow icon is, or somewhere else like the options menu that shows up on the thumbnails or the album options drop-down menu at the top of the screen?
"Map, Sattelite, Hybrid, Terrain" --> I just copied the wording out of Google's API docs for these, I can change it to match the actual map labels, that's not a problem.

@rWatcher:

icon area just above sidebar next to slideshow. Do not like drop-down menu area, because I consider it an admin option .

It would be great, then it would be more transparent of what to use.