public function hasValue($name)
    {

        // query whether or not the header is available
        if ($this->hasHeader($name)) {
            // load the key for the row
            $headerValue = $this->getHeader($name);

            // query whether the rows column has a vaild value
            return (isset($this->row[$headerValue]) && $this->row[$headerValue] !== '');
        }

        // return FALSE if not
        return false;
    }