function apachesolr_stats_facet_usage_graph in Apache Solr Statistics 7

Same name and namespace in other branches

1. 6.3 apachesolr_stats.module \apachesolr_stats_facet_usage_graph()
2. 6 apachesolr_stats.module \apachesolr_stats_facet_usage_graph()

Returns the <img> tag for a Google chart with the facet usage

Parameters

array $facets: An array of calculated data to report.

Return value

string HTML for an IMG tag to a Google chart.

1 call to apachesolr_stats_facet_usage_graph()

apachesolr_stats_generate_report_elements in ./apachesolr_stats.module

Generates report elements for the given granularity.

File

./apachesolr_stats.module, line 530

Keeps and reports statistics about Apache Solr usage and performance.

Code

function apachesolr_stats_facet_usage_graph($facets) {

  // Chart for field usage
  $leyends = array();
  $data = array();
  $label_cutoff = 40;
  $total_queries = $facets['any']['usage'];
  foreach ($facets as $fieldname => $facet) {
    $leyend = preg_replace("/^.*ilter by /", "", $facet['info']);
    if (strlen($leyend) > $label_cutoff) {
      $leyend = substr($leyend, 0, $label_cutoff) . "...";
    }
    $leyends[] = drupal_encode_path($leyend);
    $data[] = $facet['usage'] / $total_queries * 100;
  }
  $chd = 's:' . apachesolr_stats_encodedata($data, 0, 100);

  // array_reverse() in next line due to apachesolr_stats_encodedata() encoding data backwards
  $chl = implode('|', array_reverse($leyends));
  $height = 30 + sizeof($leyends) * 28;

  // Percentage labels
  $chm = "N*f0*%,000000,0,-1,11";
  $chart = "<img src='http://chart.apis.google.com/chart?chxt=y&cht=bhs&chma=20,20,20,20&chd={$chd}&chs=350x{$height}&chds=0,100&chxl=0:|{$chl}&chm={$chm}' />";
  return $chart;
}