function pDraw::computeScale in Visitors 7.2

Same name and namespace in other branches

1. 7 pChart/class/pDraw.class.php \pDraw::computeScale()

1 call to pDraw::computeScale()

pDraw::drawScale in pChart/class/pDraw.class.php

File

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];
}