nested dependent vb:each - building headers for sorting

[wpeloquin]

Hello,

I have tried numerous ways, but am beginning to think this not possible (or i'm just stuck looking at it from a single angle), so figured i'd try to get some outside opinions/help.

In my php file, i create an array that looks like the following:

    while ($wp_alist = $vbulletin->db->fetch_array($wp_fulllist))
    {
        $wp_list[$count] = array(
            'id' => htmlspecialchars($wp_alist['id']),
            'name' => htmlspecialchars($wp_alist['name']),
            'locid' => htmlspecialchars($wp_alist['locid']),
            'location' => htmlspecialchars($wp_alist['location']),
            'url' => htmlspecialchars($wp_alist['url'])
        );
        $count++;
    }

    $templater->register('wp_list', $wp_list);

In my template, i can successfully display the entire list using

<vb:each from="wp_list" value="list">
<tr>
	<td>{vb:raw list.location}</td>
	<td><a href="{vb:raw list.url}">{vb:raw list.name}</a></td>
</tr>
</vb:each>

However, what i would like to do is separate the items based on the location, something similar to the image that i attached. A rough code might be something like this, but i know that vb:raw cannot be used in a conditional, and i cannot figure out how to work around this.

<vb:each from="wp_list" value="location">
<h1>{vb:raw location.location}</h1>
	<vb:each from="wp_list" value="list">
	<vb:if condition="{vb:raw loc.location} = {vb:raw scroll.location}">
	<tr>
		<td>{vb:raw list.location}</td>
		<td><a href="{vb:raw list.url}">{vb:raw list.name}</a></td>
	</tr>
	</vb:if>
	</vb:each>
</vb:each>