When do charts appear

I newer get the chart??

I would also like to access graphical charts but cannot seem to find where they are enabled or generated.

I think that you only get the chart graphic when you view a report for a single ad. So not if you are viewing the top level report page (/admin/content/ad/report). To view the graphic for a single ad, click on the ad title from the top level report, and then click the 'reports' tab.

Subscrube

Shouldn't this be feature request to show graphs on all levels?

It's a bug, ad_report_admin_display() ('admin/content/ad/report/display' handler) contains the following:

  $ads = array();
  $output .= ad_report_admin_ad_table(strtotime($start), strtotime($end), $group, FALSE, $ads);
  $output .= '<div>'. l(t('Modify report'), 'admin/content/ad/report') .'</div>';
  $start_time = strtotime($start);
  $end_time = strtotime($end);
  $elapse = $end_time - $start_time;
  if (count($ads) && $start && $end && $elapse > 0 && $start > 0 && $end > 0) {
  // code plotting the first five ads on the graph here
  }

it seems the intention was to fill $ads array passing it by reference to ad_report_admin_ad_table() but it is declared as:

function ad_report_admin_ad_table($start = 0, $end = 0, $group = array(), $csv = FALSE, $ads)

so the $ads stays empty and the code generating graph is never executed

this should fix it

I can confirm that the patch in Comment 6 makes the report appear.

Committed. Thanks for the patch!