Lines on maps

I'd like to have this feature for a project I'm working on, but realistically I don't have the time to do this right now, nor do I have the skill to do it alone. But I'd happily help out with development if others are working on it too.

Cheers,

Thomas
http://www.greenmap.org

(PS - changed the Issue Title to reflect the topic)

This feature would ROCK!

subscribing. this is exactly what I'm looking for...any progress in the past 8 months?

No real progress on lines and shapes at Green Maps, but our summer intern is beginning to work on it now. We've done a bunch of custom modules that change much of the way content is viewed on our maps, so I don't know quite how useful this will be to anyone else.

Basically for lines & shapes we're making a module that will create a new CCK field that lets people draw lines & shapes on a GMap, then saves them in a table in the database that will use MySQL's basic spatial capabilities (http://dev.mysql.com/doc/refman/5.0/en/spatial-extensions.html).

We probably won't code anything to integrate it with GMap Views as we're not using that. But perhaps it will be enough for someone to take forward. It's not ready yet, but hopefully there'll be something to show in a week or so.

maybe this is more of a location module feature request...I was thinking more along the line of allowing a node author to define multiple location points and once it is put on a map, a line is simply drawn between the lines.

Of course make it a check-box option to draw the lines or not...or even join the first and last locations to complete a shape...

sounds great, this would realy rock :) ... Does someone know if there are intentions to have this in the verson for Drupal 6?

Has anyone made progress on this issue?

I also want to reiterate what the original issue stated (since it's the same thing I'm looking for and it might have gotten a little lost along the way):
* Use location cck
* View that shows multiple nodes, each with a single location
* Line between the nodes on the map

The only addition I would have to spec this out is that the order that the line follows should follow the sort order (first node returned from the view is the start point, the second node would be the next stop, etc.).

If some admin interface work would be helpful for anyone I'd be happy to help.

So after getting a tip from bec on the right direction, here is how I've implemented what I outlined in #12.

* In a custom module call hook_gmap()
* Look at the markers
* Create a line with points at each marker in order

if you want to only add the lines to a certain map, set the map id (I did that in the view, you can also do it in the parse_macro op). Replace MAP-ID below with your map id and MODULENAME with your module name.

If anyone has any suggestions on how this could integrate with the gmap module I'd be happy to give it a whirl.

/**
 * Implementation of hook_gmap()
 * @param $op
 *  'parse_macro'
 *  'pre_theme_map'
 *  'macro_multiple'
 *  'behaviors'
 */
function MODULENAME_gmap($op, &$map) {
  switch ($op) {  
    case 'pre_theme_map':
      
      if ($map['id'] == 'MAP-ID') {
        $line_array = array();
        if ($map['markers'] != NULL) {
          foreach ($map['markers'] as $key => $marker) {
            $line_array[$key] = array(
              0 => $marker['latitude'],
              1 => $marker['longitude']
            );
          }
        }
        
        $map['shapes'] = array(
          0 => array(
            'type' => 'line',
            'points' => $line_array
          )
        );
      }
  }
}

Marking #224435: Lines on Map using GMap Array as duplicate.

I was surprised to see this come up again!

Lines are a doddle using theme_gmap, though I guess the underlying data structure would work with either approach.

See http://tuktuk.charityrallies.org/teams/11434/blogs/map - and check out the prev/next arrows (powered by some minimal javascript)

I still don't have the popup sizes coming out right, though :-(

This was written for 5.x, but I'm happy to share the code...

has anyone tried the Geo Module to achieve this?

Hi pbarnett,

could you give some details on how you did that ?
I'm trying to do something similar (on 6.x), but I can't find a way to do it.
I would like display the travel of a node, using multiple location and line between them..

Do you have any advice ?

Regards
-p-

Here's a code snippet - $settings is the array passed to theme('gmap', array('#settings' => $settings));

        $attributes = cr_maps_marker_attributes($gid);
        $colour = $attributes['colour'];
        $style = $attributes['style'];
        $width = $attributes['width'];
        $lwidth = 1;
        $settings['shapes'][$gid]['type'] = 'line';
        $settings['shapes'][$gid]['style'] = array($colour, $lwidth, 50, null, null);
        $settings['shapes'][$gid]['points'] = array();
        foreach($blogs as $blog) {
          $lat = $blog['lat'];
          $lon = $blog['lon'];
          if ($lat > 0 and $lon > -10) {
            $settings['shapes'][$gid]['points'][] = array($lat,$lon);
          }
        }

thank you !
but... a basic question : where should I use that code ?
Do I use it as a macro ?

Regards
-p-

No, this was in a custom module... you can use lines in a GMap macro quite easily - see this link. (a D5 site, but the same applies)

Hi pbarnett, could you please provide a print_r of the $settings variable or some source of documentation for this?

Thanks

Dump of $settings for http://mongolia.charityrallies.org/teams/29399/blogs/map is at http://drupalbin.com/19785