function _quant_build_data_single in Quant 6

Generate chart data for a singular data point across a time period

See also

quant_build_data()

File

includes/data.inc, line 70

Functions used to convert Drupal data into chart format

Code

function _quant_build_data_single(&$quant) {

  // Extract the days
  $days = $quant->days;

  // Extract the period
  $period = $quant->period;

  // Determine when the starting time is
  $start = is_array($period) ? $period[1] : time();

  // The date() format to use. We compare by month if there are more than 183 days.
  $format = $days > 183 ? QUANT_DATE_MONTH_FORMAT : QUANT_DATE_DAY_FORMAT;

  // Whether or not to jump by day or month
  $interval = $days > 183 ? 2629743 : 86400;

  // Possibly convert days to months
  $steps = $days > 183 ? $days / 30 : $days;

  // Extract the database field
  $field = $quant->field;

  // Create a new array that's preformatted with a key for
  // every single time period
  $dates = _quant_build_date_array($start, $steps, $interval, $format);

  // Calculate the amount of occurrences per time period
  while ($item = db_fetch_object($quant->items)) {
    if (isset($dates[date($format, $item->{$field})])) {
      $dates[date($format, $item->{$field})]++;
    }
  }

  // Set in ascending order
  $dates = array_reverse($dates);

  // Remove the database resource
  unset($quant->items);
  $quant->data = $dates;
}