src/Maths/Algebra/Matrix.php
public function seekY($index)
    {
        if ($index>0 && $index<=$this->countY()) {
            $this->y = $index;
        } else {
            throw new OutOfRangeException(
                "Index '{$index}' for scope 'y' is out of range of available data"
            );
        }
        return $this;
    }
public function seekY($index)
    {
        if ($index>0 && $index<=$this->countY()) {
            $this->y = $index;
        } else {
            throw new OutOfRangeException(
                "Index '{$index}' for scope 'y' is out of range of available data"
            );
        }
        return $this;
    }
Seek to index for `y` (column)

@param   int  $index
@return  $this
@throws  OutOfRangeException if the index is out of range