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1. 

   theophile
   Member

   Not so much a bug as a question. I am trying to implement the Wordpress Geotag plugin which can create a Google Map for photos that have GPS data in the EXIF header. The trouble is that when PhotoQ creates the display images from the original, the EXIF data is not transferred from the original. Generally, this is a good thing. But my efforts to implement auto mapping for geotagged photos would be greatly enhanced if the display image had that info in it.

   So is there currently a way to transfer EXIF data (in whole or in part) to the resized versions? If not, I'm guessing I'd just have to make a modification to the arguments for the 'convert' command. Where would I do this?

   Thanks!!

   Posted 1 year ago #
2. 

   whoismanu
   Key Master

   hi,

   unfortunately i fear that it is not that simple. you might have to find a library / function that allows you to write exif data into a picture. so far none of the libraries used by photoq is able to do that. i am currently rewriting big parts of photoq and i might switch for a library that allows for writing of exif data (however, so far i have not settled on any library, since most of those i found do not seem to be actively maintained). as far as i know there is also no built-in php function to write exif.

   Posted 1 year ago #
3. 

   theophile
   Member

   Thanks for your reply. I actually figured out how to accomplish my goal via another method. While the Geotag plugin can automatically generate maps from image EXIF data, it also uses a shortcode with which you can specify the coordinates to use for the map marker. After a lot of rial and error, I managed to come up with a quick and dirty php block that will get the latitude and longitude information from photoQExifFull and pass it to the Geotag shortcode. I'm not a programmer so I'm sure there's a more efficient way to do this, but here's what I have working:

   <?php
$sizes = get_post_meta($post->ID, 'photoQExifFull', true);
$lat = $sizes['Latitude'];
$lon = $sizes['Longitude'];
$latR = $sizes['Latitude Reference'];
$lonR = $sizes['Longitude Reference'];
if(!empty($sizes['Latitude']))
echo do_shortcode('[gmap marker_lat="'.$lat.' '.$latR.'" marker_lon="'.$lon.' '.$lonR.'"]');
?>

   You can see an example of it here:
   http://monopedilos.com/photoblog/2010/04/follow-me/

   I hope this is helpful!

   Posted 1 year ago #
4. 

   whoismanu
   Key Master

   looks great. thanks for sharing this. i have been thinking for a long time about integrating maps into photoq.

   what you share here is certainly already a nice way of how this can be accomplished already today. cool!

   Posted 1 year ago #

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