cannot implicitly convert from double?[] to double[]
<p>I'm trying to plot a chart by querying a table for the data, and the table columns are nullable. The query runs ok, but passing the query array back to the chart array raises an error <code>"cannot implicitly convert from double?[]</code> to double[]". I've searched the net without success. Any suggestions please?</p>

<pre><code>//code in the windows form
 private void cmdCHART_Click(object sender, EventArgs e)
        {
            nmCHART.clsCHART oCHART = new nmCHART.clsCHART();

            double[] Y = new double[21];
            Y = oCHART.GET_Y_SERIES("CONDOR"); //can't cast double?[] to double[]
        }

//get data
public double?[] GET_Y_SERIES(string GREEK)
        {

            var qryY = (from P in Globals.DATA.PAYOFF_EAVs
                        where P.GREEK == GREEK
                        orderby P.DP_NO
                        select P.DATA).ToArray();

            return qryY;
        }
</code></pre>