/**
* Image_Graph_FunctionDataset [Constructor]
*
* @param double $minimumX The minimum X value
* @param double $maximumX The maximum X value
* @param string $function The name of the function, if must be a single
* parameter function like fx sin(x) or cos(x)
* @param int $points The number of points to create
*/
function Image_Graph_Dataset_Function($minimumX, $maximumX, $function, $points)
{
parent::Image_Graph_Dataset();
$this->_minimumX = $minimumX;
$this->_maximumX = $maximumX;
$this->_dataFunction = $function;
$this->_count = $points;
$this->_calculateMaxima();
}
/**
* Image_Graph_Dataset_Trivial [Constructor]
*
* Pass an associated array ($data[$x] = $y) to the constructor for easy
* data addition. Alternatively (if multiple entries with same x value is
* required) pass an array with (x, y) values: $data[$id] = array('x' => $x,
* 'y' => $y);
*
* NB! If passing the 1st type array at this point, the x-values will also
* be used for ID tags, i.e. when using {@link Image_Graph_Fill_Array}. In
* the 2nd type the key/index of the "outermost" array will be the id tag
* (i.e. $id in the example)
*
* @param array $dataArray An associated array with values to the dataset
*/
function Image_Graph_Dataset_Trivial($dataArray = false)
{
parent::Image_Graph_Dataset();
$this->_data = array();
if (is_array($dataArray)) {
reset($dataArray);
$keys = array_keys($dataArray);
foreach ($keys as $x) {
$y =& $dataArray[$x];
if (is_array($y) && isset($y['x']) && isset($y['y'])) {
$this->addPoint($y['x'], $y['y'], isset($y['id']) ? $y['id'] : $x);
} else {
$this->addPoint($x, $y, $x);
}
}
}
}
/**
* Image_Graph_VectorFunctionDataset [Constructor]
*
* @param double $minimumT The minimum value of the vector function variable
* @param double $maximumT The maximum value of the vector function variable
* @param string $functionX The name of the X function, if must be a single
* parameter function like fx sin(x) or cos(x)
* @param string $functionY The name of the Y function, if must be a single
* parameter function like fx sin(x) or cos(x)
* @param int $points The number of points to create
*/
function Image_Graph_Dataset_VectorFunction($minimumT, $maximumT, $functionX, $functionY, $points)
{
parent::Image_Graph_Dataset();
$this->_minimumT = $minimumT;
$this->_maximumT = $maximumT;
$this->_functionX = $functionX;
$this->_functionY = $functionY;
$this->_count = $points;
$this->_calculateMaxima();
}
