File

inc/pchart/pchart/class/pDraw.class.php, line 2498

Class

pDraw

Code

function computeScale($XMin, $XMax, $MaxDivs, $Factors, $AxisID = 0) 
 {
  /* Compute each factors */
  $Results = "";
  foreach ($Factors as $Key => $Factor) {
    $Results [$Factor] = $this->processScale($XMin, $XMax, $MaxDivs, array($Factor), $AxisID);
  };

  /* Remove scales that are creating to much decimals */
  $GoodScaleFactors = "";
  foreach ($Results as $Key => $Result) 
   {
    $Decimals = preg_split("/\./", $Result ["RowHeight"]);
    if ((!isset($Decimals [1])) || (strlen($Decimals [1]) < 6)) {
      $GoodScaleFactors [] = $Key;
    }
  }

  /* Found no correct scale, shame,... returns the 1st one as default */
  if ($GoodScaleFactors == "") {
    return ($Results [$Factors [0]]);
  }

  /* Find the factor that cause the maximum number of Rows */
  $MaxRows = 0;
  $BestFactor = 0;
  foreach ($GoodScaleFactors as $Key => $Factor) 
   {
    if ($Results [$Factor]["Rows"] > $MaxRows) {
      $MaxRows = $Results [$Factor]["Rows"];
      $BestFactor = $Factor;
    }
  }

  /* Return the best visual scale */
  return ($Results [$BestFactor]);
}