librenms-librenms/includes/html/pages/device/nfsen/channel.inc.php

<?php

$datas = array(
          'Flows'   => 'nfsen_channel_flows',
          'Packets' => 'nfsen_channel_packets',
          'Traffic' => 'nfsen_channel_traffic',
         );

if (isset($channelFilter)&&file_exists($channelFilter)) {
    $chanelFilterContents=file_get_contents($channelFilter);
    print_optionbar_start();
    print $vars['channel'].' Filter: '.$chanelFilterContents;
    print_optionbar_end();
}

foreach ($datas as $name => $type) {
    $graph_title = $name;
    $graph_type  = 'device_'.$type;
    $graph_array['channel']=$vars['channel'];

    include 'includes/html/print-device-graph.php';
}