/**
* Adds the error message to the error log in the gcharts master object.
*
* @param string $msg
*/
public function error($msg)
{
Gcharts::_set_error($this->chartType . '(' . $this->chartLabel . ')', $msg);
}
/**
* Adds the error message to the error log in the gcharts master object.
*
* @param string $msg error message.
*/
private function error($msg)
{
Gcharts::_set_error(get_class($this), $msg);
}
public function width($width)
{
if (is_int($width)) {
$this->addOption(array('width' => $width));
return $this;
} else {
Gcharts::_set_error(get_class($this), 'Invalid width, must be (int)');
}
}
/**
* Whether to guess the value of missing points. If true, it will guess the
* value of any missing data based on neighboring points. If false, it will
* leave a break in the line at the unknown point.
*
* @param boolean $interpolateNulls
* @return \AreaChart
*/
public function interpolateNulls($interpolateNulls)
{
if (is_bool($interpolateNulls)) {
$this->addOption(array('interpolateNulls' => $interpolateNulls));
} else {
Gcharts::_set_error($where, 'Invalid interpolateNulls value, must be type (boolean).');
}
return $this;
}