/**
* Sets an interval for where labels are shown on the axis.
*
* The label interval is rounded to nearest integer value.
*
* @param double $labelInterval The interval with which labels are shown
* @param int $level Label level
*
* @return void
*/
function setLabelInterval($labelInterval = 'auto', $level = 1)
{
if (is_array($labelInterval)) {
parent::setLabelInterval($labelInterval);
} elseif ($labelInterval == 'auto') {
parent::setLabelInterval(1);
} else {
parent::setLabelInterval(round($labelInterval));
}
}
/**
* Get the axis intersection pixel position
*
* This is only to be called prior to output! I.e. between the user
* invokation of Image_Graph::done() and any actual output is performed.
* This is because it can change the axis range.
*
* @param double $value the intersection value to get the pixel-point for
*
* @return double The pixel position along the axis
* @access private
*/
function _intersectPoint($value)
{
if ($value <= 0 && $value !== 'max' && $value !== 'min') {
$value = 1;
}
return parent::_intersectPoint($value);
}