Module: EXIF GPS

Hi, nice work rWatcher.

I try the last git release but it seems doesn't work (especialy the link to the complete map)

Done: Added two icons, one for mapping the album and one for mapping the user. Both can be individually turned on/off from the admin screen.

Done.

Done: If no other coordinates are available, and the map type is set to interactive then the contents of the album will be mapped instead of hiding the map sidebar.

I've been unable to come up with a way to detect if satellite imagery is available at the current zoom level. What I've done is added an option to the admin screen called "Maximum Auto-Zoom Level:" -- if this is set, the maps will not auto-zoom past this level. So if you know that satellite imagery is not available any higher then a zoom level of 18, you can type that in and a level of 19 or higher will never be used for a starting zoom.

I've only tested it against RC-1, so it's possible something could have changed to break this module. What's happening when you try and use it?

That sounds like an issue with the EXIF module itself. You can file a bug report for that at http://sourceforge.net/apps/trac/gallery so the gallery dev's can look into it.

This appears to be a compatibility issue with the Gray Dragon theme. It works fine with Wind. I'm looking into it to see if it's something I can fix.

The problem doesn't appear to be on my end. I've also noticed that this isn't the only module not working. For example, I get a blank screen when clicking on a tag too.

there is a problem with the module
when showing exif_gps/map/album/1 and there are sideblocks (I have seen it with exif_gps_location, but it could be any other which work with item related stuff, my guess), sideblock creation crashes.
my theme seems to react more sensitivelly then wind theme, but wind crashes as well, it is just less visible

yes, because there is no item()
you have to do

if (($theme->item) and ($theme->item->is_album()))

Feature request - I do not know if it even possible, but

treat point on the map as a tag

when map is displayed in albums several locations are displayed. it would be nice if clicking the location would navigate to the page with all photos for the click.

First of all, hi to all!

...And thank you for such a great piece of software like gallery3 and for the very cool gps module!

Having used gallery2 for a long time with the gps/map module, I changed to gallery3 some days ago and would like to post a feature request for the exif_gps module:

The map module of gallery2 (http://codex.gallery2.org/Gallery2:Modules:Map:UserGuide) had a great little button "get via map" (see:http://codex.gallery2.org/File:Admin.JPG)
Using that button, a google map opened in a new window so you where able to get a postition (latitude+logitute) to the gps text field just by choosing it with your mouse on the map. It would be great to implement that feature also for the exif_gps module of gallery3.

There were also some other nice features like choosing different marker colors depending on item or album (http://codex.gallery2.org/File:MarkerManagement.jpg). Maybe it's kind of easy to implement that too.

By the way: at the moment I am working on a new module for gallery3. Can someone tell me where to put that into web/publish it best and how to start a discussion and feedback about the module?

Best regards!

Hello rWatcher,

Thank you so much. This module works perfectly with my geotagged photos.

There is only one glitch on the code: if you use SSL on your gallery, it will break the security status since it checks for http://www.google instead of httpS://www.google.

I wonder if you can correct this.

Thank you so much.

Hi, I really like this module and think it looks fantastic. One minor improvement I would like is that the title on the "Map this album" page should be the title of the album, not the name from the directory structure.

For example:
http://www.harshbutfair.org/gallery/index.php/exif_gps/map/album/3
The title should be "Map of Asia 2010" rather than "Map of asia2010".

Thanks!

Me too, I think a smarter solution would be that if an album has a location then don't recurse into that album, otherwise continue like it does now. I've had a quick look at the code but can't get anywhere with it, PHP is not my forte.

Hi,

have similar issues and removed the map from the sidebar. Just leave map album function so far.

Maybe it would be also an option to "cluster" the gps info and ascribe it to albums. This would mean you need the possibility to have more than one gps location for an album.

Clustering would mean

- take one GPS location
- search for adjacent locations. if they are within a predefined radius, they belong to the "cluster"
- proceed as long as no further gps locations within the distance of this cluster. Then ascribe a center gps value to this cluster and set it for he album.
- there might be more clusters for one album. however, the number of gps locations to be displayed for albums would be lower than that for individual locations
- display individual locations only on album level

Milliondollar,

not exactly.

I disabled the option in the sidebar but have the option "map this album" which you can do at every level (outside or inside an album)

It is at least an option.

Guess i have found the problem and now it works for me:

I have added the following lines to exif_gps_block.php in ../modules/exif_gps/helpers/

        $item = $theme->item;
        if (($theme->item) and ($theme->item->is_album())){
        $album_id = $item->id;
                $album_items_count = ORM::factory("item", $album_id)
                ->where("type", "=", "album")
                ->descendants_count();
        if (($album_items_count > 0)){
        break;}
        }

just below:

    case "exif_gps_location":
      // Look for coordinates to display.
      $latitude = "";
      $longitude = "";

Sidebar gps info is displayed now only in albums without sub albums and for images itself which improves the overall speed.

What exactly do you mean?

Disable the functionality of displaying the gps info only on the root page?

This should be possible. However, it might still slowdown everything.

At least for your first question the following code should work. GPS info is not displayed on the root page but on all other pages

 $item = $theme->item;
        if (($theme->item) and ($theme->item->is_album())){
        if (($item->id == 1)){
        break;
        }}

Thanks for posting that. I had the same problem and this fixed it.

--
Everything is wonderful until you know something about it.

rWatcher,

This is a great module for G3 and it was one of the reasons I chose G3 over other options. I'm working on a G3 site related to deep-water (1000-6000m) oceanographic exploration. It would be extremely useful if exif_gps could be enhanced to do the following five things:

1. Extract and process the GPSAltitude and the GPSAltitudeRef tags
For my audience, depth is VERY important but my hope would be this feature would be useful to the larger exif_gps audience given the number of GPS-enabled cameras that are starting to support altitude.

2. Extract and process the GPSImgDirection and the GPSImgDirectionRef tags
I doubt adding this feature would help the majority of the exif_gps community but again would be very useful to my audience given they typically like to know which direction the vehicle was facing when the picture was taken.

3. Display Latitude, Longitude, Altitude and Heading in the "Location" sidebar
The Google Map displayed in the sidebar is very useful on my personnel gallery page where the pictures are taken over land but it's not as useful for the underwater images I upload. Almost all of these sidebar maps appear as a single point in the middle of the water with no landmass in view. What would be more useful would be to have the sidebar display the lat,lon,alt and heading as numerical values.

4. In the sidebar, label the GPSAltitude value as "Altitude" when GPSAltitudeRef=00 and "Depth" when GPSAltitudeRef=01

5. Add the ability in the EXIF_GPS Settings page to show only the Map, only the numerical data or both in the sidebar. (I was envisioning 3 radio buttons)

I tried to make the changes to the module myself but once I realized it required changing the DB schema I figured it was time to put in a feature request to the developer.

If your interested in what I do (or you suspect I might be full of it...) here's a link to the vessel I work on.
http://oceanexplorer.noaa.gov/okeanos/explorations/10index/welcome.html

Thanks again and regardless of if you can help me with this, EXIF_GPS was a great addition to G3.

-W

Is it possible to have a button next to the longitude and latitude boxes that opens up a google map and lets you search for a location, then when you click a point in the map it uses that to calculate long and lat and to fill in the boxes rather than having to go elsewhere to look them up, and then copying and pasting back into the boxes.

even something like this page does http://itouchmap.com/latlong.html

Given k0be's comment I decided not to wait for rWatcher to respond and have started to dig into the code myself.

Progress made:
- installer script add two new fields to exif_coordinates table (altitude, direction)
- "EXIF_GPS Settings" page displays checkboxes under "Sidebar Settings" for "Show Map" and "Show Coordinates", these vars (toolbar_map_display, toolbar_coord_display) are correctly stored in the database
- "Edit Photo" dialog box displays additional textfields for altitude and direction. Manually adding values to these fields get correctly stored in the database.

Problems encountered:
- I'm having trouble extracting the altitude and direction information when the photos are uploaded. Uploading a file registers an error but I can't see what the error is. Also there is an error, the lat,lon still get correctly set, just not the altitude and direction.
- When I run the "Extract Exif GPS data" maintenance task, the job stalls on the first image but just like the uploading file error the job correctly extracts the lat,lon but not the altitude, direction.

Left to Do:
- Use the toolbar_map_display, toolbar_coord_display variables to correctly show the map and/or coordinates in the sidebar
- Figure out why I can't extract the altitude and direction directly from the images.

I've never programmed in python so can someone please tell help me figure out what I'm doing wrong?

Here is the original code for extracting lat, lon

Here is my code (inserted below original code) for extracting altitude

Here is my code (inserted below my altitude code) for extracting direction

Here is function to extract the correct EXIF Tags. I added the last 4 lines of the array.

Here is the GPS key information from the EXIF Data Module

Here is the current version of EXIF_GPS, intended for use with Gallery 3.0.1.

Thank you very much for this module

Just a question beside:
Is there a possibility that the module also displays the data in which direction the picture was taken?
I normally usw "GeoSetter" to add the GPS data into the pictures, and i also manually assign the direction too.

That would be really really nice

I though I'd provide an update. I was able to get the functionality I was eluding to in my earlier posts.

New functionality:
- added two columns to exif_coordniates table for storing altitude(/depth) and direction
- new sidebar widget (GPS Data) to display position/attitude data as text - see lower right of 1st image. Sidebar widget will only show the data that's available. i.e. if the image only has lat/lon, the widget will not display empty altitude and depth labels.
- any new photos uploaded that contain direction or altitude exif data, the data will be extracted and added to the db.
- photo edit dialog box allows users to edit altitude and direction - see 2nd image
- upgrade works... sorta; adds columns to database, updates module version # to 3, doesn't process existing images and pull out altitude and direction data.

[img]http://oceandatarat.org/G3_download/exif_gps_v3_main.jpg[/img]
[img]http://oceandatarat.org/G3_download/exif_gps_v3_edit_dialog.jpg[/img]

For anyone interested, here's my modified package:
http://oceandatarat.org/G3_download/exif_gps_v3.tgz

If there's interest I'll work with rwatcher on making the upgrade subroutine more robust and added the code to the official repository.

WARNING - upgrade procedure NOT PERFECT!
Here's the upgrade path that worked for me:
1. Backup DB
2. Disable Exif_gps module
3. Replace Exif_gps with my custom module
4. Enable Exif_gps module (this should trigger the upgrade)
5. Delete all records in the exif_coordinates table (yeah, not pretty I know. If you've been adding GPS data to Gallery by hand DO NOT DO THIS! YOU WILL LOSE ALL OF YOUR WORK. In my case all of my images are geotagged so I wasn't risking anything.)
6. Run the "Extract Exif GPS data" maintenance task. This will extract the lat/lon, altitude and direction.

- W

Have you thought about batch-gps-tagging your photos offline with something like Geosetter? ( http://www.geosetter.de/en/ ) That way the coordinates are part of the photo and will stay with it should you move to a different system later on.

I've been considering doing this actually. There's already some integration between the two modules in place on EXIF_GPS's sidebar. I'm not sure about how to best tie the rest of it together yet though.

Here is the lastest version of EXIF_GPS. It includes niaxilin's auto-zoom bugfix and mattbostock suggestion for gracefully degrading the sidebar map.

I've made a minor update to the module to display a warning message that the EXIF module must be active. Latest version is attached.