function _google_chart_tools_apply_grouping_conversion in Google Chart Tools 7

SUM datasets based on grouping value.

1 call to _google_chart_tools_apply_grouping_conversion()

google_chart_tools_views_plugin_style::render in google_chart_tools_views/views/google_chart_tools_views_plugin_style.inc

Render the display in this style.

File

google_chart_tools_views/views/google_chart_tools_views_plugin_style.inc, line 224

Contains the Google Chart Tools display plugin.

Code

function _google_chart_tools_apply_grouping_conversion(&$header, &$item) {

  // establish overlap by header name
  $tmp_header = array_flip($header);
  foreach ($header as $value) {
    $tmp_header[$value] = array();
  }

  // populate tmp_header with the array key matches of headerr
  foreach ($header as $key => $value) {
    $tmp_header[$value][] = $key;
  }
  $tmp_item = array();

  // SUM the items into their respective totals
  foreach ($item as $item_key => $datapoints) {
    $tmp_item[$item_key] = array();
    foreach ($tmp_header as $header_key => $header_array) {
      $tmp_item[$item_key][$header_key] = NULL;
      foreach ($header_array as $datapointkey) {
        $tmp_item[$item_key][$header_key] += $item[$item_key][$datapointkey];
      }
    }
  }

  // reset the header so we can merge it
  $header = array();
  foreach ($tmp_header as $header_key => $header_array) {

    // quotes ensure that header_key will be a string
    $header[] = "{$header_key}";
  }

  // convert the name aggregates back to generic keys
  foreach ($tmp_item as $item_key => $datapoints) {
    $tmp_item[$item_key] = array_values($datapoints);
  }

  // set item to the new datapoints array
  $item = $tmp_item;
}