/**
* Constructor
*
* @param ezcGraphDataSet $dataset Dataset to interpolate
* @param int $order Maximum order of interpolating polynom
* @return void
* @ignore
*/
public function __construct(ezcGraphDataSet $dataset, $order = 3)
{
parent::__construct();
$this->properties['resolution'] = 100;
$this->properties['polynomOrder'] = (int) $order;
$this->source = $dataset;
}
/**
* Constructor
*
* @param float $start Start value for x axis values of function
* @param float $end End value for x axis values of function
* @param callback $callback Callback function
* @return void
* @ignore
*/
public function __construct($start = null, $end = null, $callback = null)
{
parent::__construct();
$this->properties['start'] = null;
$this->properties['end'] = null;
$this->properties['callback'] = null;
if ($start !== null) {
$this->start = $start;
}
if ($end !== null) {
$this->end = $end;
}
if ($callback !== null) {
$this->callback = $callback;
}
$this->properties['resolution'] = 100;
}
/**
* Constructor
*
* @param array|Iterator $data Array or Iterator containing the data
* @return void
*/
public function __construct($data)
{
$this->createFromArray($data);
parent::__construct();
}
/**
* Constructor
*
* Creates a ezcGraphDatabase from a PDOStatement and uses the columns
* defined in the definition array as keys and values for the data set.
*
* If the definition array is empty a single column will be used as values,
* with two columns the first column will be used for the keys and the
* second for the data set values.
*
* You may define the name of the rows used for keys and values by using
* an array like:
* array (
* ezcGraph::KEY => 'row name',
* ezcGraph::VALUE => 'row name',
* );
*
* PDO by default lowercases all column names, see PDO::setAttribute() for
* details. If the column names you pass to the dataset definition array
* are not lowercase, you either need to change the PDO::ATTR_CASE
* attribute of your PDO connection instance, or lowercase the names passed
* to the definition array. Otherwise this will throw
* ezcGraphDatabaseMissingColumnException exceptions.
*
* @param PDOStatement $statement
* @param array $definition
* @return ezcGraphDatabase
*/
public function __construct(PDOStatement $statement, array $definition = null)
{
parent::__construct();
$this->data = array();
$this->createFromPdo($statement, $definition);
}
