function pData::createFunctionSerie in Visitors 7.2

Same name and namespace in other branches

1. 7 pChart/class/pData.class.php \pData::createFunctionSerie()

File

pChart/class/pData.class.php, line 704

Class

pData

Code

function createFunctionSerie($SerieName, $Formula = "", $Options = "") {
  $MinX = isset($Options["MinX"]) ? $Options["MinX"] : -10;
  $MaxX = isset($Options["MaxX"]) ? $Options["MaxX"] : 10;
  $XStep = isset($Options["XStep"]) ? $Options["XStep"] : 1;
  $AutoDescription = isset($Options["AutoDescription"]) ? $Options["AutoDescription"] : FALSE;
  $RecordAbscissa = isset($Options["RecordAbscissa"]) ? $Options["RecordAbscissa"] : FALSE;
  $AbscissaSerie = isset($Options["AbscissaSerie"]) ? $Options["AbscissaSerie"] : "Abscissa";
  if ($Formula == "") {
    return 0;
  }
  $Result = "";
  $Abscissa = "";
  for ($i = $MinX; $i <= $MaxX; $i = $i + $XStep) {
    $Expression = "\$return = '!'.(" . str_replace("z", $i, $Formula) . ");";
    if (@eval($Expression) === FALSE) {
      $return = VOID;
    }
    if ($return == "!") {
      $return = VOID;
    }
    else {
      $return = $this
        ->right($return, strlen($return) - 1);
    }
    if ($return == "NAN") {
      $return = VOID;
    }
    if ($return == "INF") {
      $return = VOID;
    }
    if ($return == "-INF") {
      $return = VOID;
    }
    $Abscissa[] = $i;
    $Result[] = $return;
  }
  $this
    ->addPoints($Result, $SerieName);
  if ($AutoDescription) {
    $this
      ->setSerieDescription($SerieName, $Formula);
  }
  if ($RecordAbscissa) {
    $this
      ->addPoints($Abscissa, $AbscissaSerie);
  }
}