Title: Overlay API?
Last modified: August 21, 2016

---

# Overlay API?

 *  Resolved [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * (@wordpressorgpatgarnercom)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/)
 * Are the coordinates of each rectangle that I create in the overlay stored in 
   the database or are they stored as JSON in a file on the filesystem? I would 
   like to edit the database (or JSON) to edit the latitude and longitude coordinates
   of each rectangle that I created in the overlay.
 * [http://wordpress.org/plugins/intergeo-maps/](http://wordpress.org/plugins/intergeo-maps/)

Viewing 7 replies - 1 through 7 (of 7 total)

 *  [eugene.manuilov](https://wordpress.org/support/users/madpixels/)
 * (@madpixels)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468598)
 * Hi Pat!
 * They are stored in database. The plugin uses custom post type to store all maps.
   All settings are stored in a post body as json. You can override it manually 
   or you can apply your own hook to filter map options.
 * Use **hook** attribute in the shortcode like this:
 * `[intergeo hook="my_custom_intergeo_hook"]...[/intergeo]`
 * Then in your plugin or theme you can do like this:
 *     ```
       add_filter( 'my_custom_intergeo_hook', 'my_intergeo_filter' );
       function my_intergeo_filter( $options ) {
           // edit option
           ...
   
           // return updated options
           return $options;
       }
       ```
   
 *  Thread Starter [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * (@wordpressorgpatgarnercom)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468608)
 * The filter you’ve displayed looks interesting, although I haven’t a clue of what
   the API is for the options in JavaScript. Where might I find documentation on
   this? Or even an example of a single rectangle polyline would be great using 
   the following data, which I created in KML (I’m familiar with KML, not the new
   JavaScript API):
 *     ```
       <Placemark>
           <name>Centre = 29.590569,-82.238584</name>
           <LineString>
               <extrude>0</extrude>
               <tessellate>1</tessellate>
               <altitudeMode>clampToGround</altitudeMode>
               <coordinates> -82.238787,29.590794,0.000000 -82.238787,29.590344,0.000000 -82.238382,29.590344,0.000000 -82.238382,29.590794,0.000000 -82.238787,29.590794,0.000000</coordinates>
           </LineString>
       </Placemark>
       ```
   
 * Also, on the database side I’d like to learn how to edit the coordinates of the
   polylines I’ve created using Intergeo. I searched for the Intergeo map data in
   the database. I assumed there would be one table for maps, one for polylines,
   one for polygons, etc. However, I could not find any such tables or data. Here
   are the tables in my WP installation:
 *     ```
       refererstat
       viewstat
       wp_bad_behavior
       wp_commentmeta
       wp_comments
       wp_contact_form_7
       wp_events
       wp_events_categories
       wp_frm_fields              <-- Formidable Pro plugin
       wp_frm_forms
       wp_frm_items
       wp_frm_item_metas
       wp_links
       wp_ngg_album               <-- NGG Image Gallery plugin
       wp_ngg_gallery
       wp_ngg_pictures
       wp_options
       wp_postmeta
       wp_posts
       wp_terms
       wp_term_relationships
       wp_term_taxonomy
       wp_usermeta
       wp_users
       ```
   
 * Perusing the above tables in my schema, I searched for Intergeo overlay data 
   but couldn’t find it anywhere. I did see a few entries in wp_options, but these
   clearly are for Intergeo settings, not any specific map I’ve created, e.g. here
   are a few option_names
 *     ```
       intergeo_messages
       intergeo_show_map_center
       intergeo_map_api_key
       intergeo_adsense_publisher_id
       intergeo-settings-map-api-key
       ```
   
 * I presume that I should be able to find the coordinates of the polylines I’ve
   created using Intergeo’s overlay/polyline drawing tool in one of the database
   tables, yes? I need to edit such coordinates and adjust them a little bit in 
   order to get them to line up exactly with coordinates that were generated by 
   a GPS unit in the field.
 *  Thread Starter [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * (@wordpressorgpatgarnercom)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468610)
 * I should have read your response a little more closely. As you said, it’s post
   data and I found it in wp_posts, stored as json. So the database portion of my
   question is answered. Awesome!
 * So how would I embed the following json using an Intergeo hook:
 *     ```
       {"lat": 29.5912749982, "lng": -82.2380460874, "zoom": 18, "map": {
           "mapTypeId": "HYBRID"
       }, "container": {
           "width": "480px",
           "height": "480px"
       }, "overlays": {
           "rectangle": [
               {
                   "path": [
                       ["29.592136", "-82.238889"],
                       ["29.592542", "-82.238427"]
                   ],
                   "position": "CENTER",
                   "weight": 2,
                   "stroke_opacity": "",
                   "stroke_color": "#000000",
                   "fill_opacity": 0.2,
                   "fill_color": "#dd3333"
               }
           ]
       }}
       ```
   
 *  [eugene.manuilov](https://wordpress.org/support/users/madpixels/)
 * (@madpixels)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468620)
 * Do you know PHP? If you don’t it will be better right now to edit database record.
 * All shapes are stored in **overlays** array. As you can see in the json above
   there is array of rectangles. To enter your coordinates, just edit **path** array.
   It contains two subarrays: **[“29.592136”, “-82.238889”]** and **[“29.592542”,“-
   82.238427”]**. It is two points of your rectangle. Enter your coordinates, and
   the rectangle will be updated.
 * Try to play with it and you will see what you need to change.
 *  Thread Starter [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * (@wordpressorgpatgarnercom)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468629)
 * Yes, I am familiar with json and can edit the database files — no problem — which
   is excellent because it becomes possible to set up a map, sketch rectangles via
   Intergeo and then edit the coordinates of each rectangle via the database to 
   match GPS readings we are making in the field so that the rectangles are accurately
   positioned on the map.
 * In this project a use case requires a user to change the rectangle’s fill color
   via form submission at runtime. I was thinking it might be possible to do so 
   via the Intergeo hook by grabbing the new fill color data from the database using
   something like a Formidable Pro tag but now I am beginning to realize that doing
   so is beyond the scope of the Intergeo hook (let me know if I’m wrong!).
 * I don’t know PHP, I’ve done little side projects with it in the late 1990s. I’ve
   made several websites using WordPress over the past few years, which required
   some editing of PHP files and CSS and such. My first exposure to Google Maps 
   began yesterday, when I learned how to use KML to generate the rectangles. Today,
   I perused the Google Maps v.3 JavaScript API, which seems pretty straightforward,
   and I learned to implement my map using JavaScript + HTML. My expertise is in
   enterprise middleware (JEE), which does provide json hooks. I could implement
   an amazingly awesome interactive and dynamic application but building and hosting
   such an application is beyond the budget of my client — a small nonprofit organization.
   So I am probably capable of making changes to the plugin and my WordPress installation
   to implement the use case but the budget is a constraint.
 * As I have searched for WordPress map plugins I have noticed that while many plugins
   provided the means to dynamically add location markers few provided the means
   to create overlays and to my knowledge none provided the means to edit rectangle
   fill colors in real time (please correct me if I’m wrong!).
 * For this project the rectangles, once set up, don’t need the fill colors to be
   changed often — perhaps two rectangles per month — so it would be feasible to
   provide a solution using WP + Intergeo and manually editing the fill_color attributes
   in the database when necessary. Although not elegant this would get the job done
   within budget.
 * Thanks for your help!
 *  [eugene.manuilov](https://wordpress.org/support/users/madpixels/)
 * (@madpixels)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468655)
 * It is possible to develop an ability to change fill color from front end. All
   you need is just to process color submission and update appropriate database 
   record. However it require PHP knowledge. I would like to recommend you to hire
   a freelancer (elance/odesk/etc) to do this job.
 * Any way if you need any further help then ask me, otherwise, please, mark this
   thread as resolved (if you think so).
 *  Thread Starter [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * (@wordpressorgpatgarnercom)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468656)
 * I will look into your suggestions. Thanks!

Viewing 7 replies - 1 through 7 (of 7 total)

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 * 7 replies
 * 2 participants
 * Last reply from: [Pat Garner](https://wordpress.org/support/users/wordpressorgpatgarnercom/)
 * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/overlay-api/#post-4468656)
 * Status: resolved