This is Test for NULL data skip.
Default nullSkip:true
Skipping only as for NULL. '' and 'undefined' are no use.
There is the method to skip in all except Number. Which thinks it to be good?

<canvas id="canvasMyID1" height="200"></canvas>
<script type="text/javascript">
var chartSetting1={
    data : [
      [null,500,null,null,888,777,925],
      [50,123,312,200,402,300,null]
    ]
};
$(function(){
	$('#canvasMyID1').jQchart(chartSetting1);
})
</script>

<canvas id="canvasMyID2" height="200"></canvas>
<script type="text/javascript">
var chartSetting2={
    nullSkip:false,
    data : [
      [null,500,null,null,888,777,925],
      [50,123,312,200,402,300,null]
    ]
};
$(function(){
	$('#canvasMyID2').jQchart(chartSetting2);
})
</script>

<canvas id="canvasMyID22" height="200"></canvas>
<script type="text/javascript">
var chartSetting22={
    nullSkip:true,
    data : [
      [null,500,null,null,888,777,925],
      [50,123,312,200,402,300,null]
    ]
};
$(function(){
	$('#canvasMyID22').jQchart(chartSetting22);
})
</script>

<canvas id="canvasMyID3" height="200"></canvas>
<script type="text/javascript">
var chartSetting3={
    config:{
      type : 'bar' 
    },
    data : [
      [null,500,null,null,888,777,925],
      [50,123,312,200,402,300,null]
    ]
};
$(function(){
	$('#canvasMyID3').jQchart(chartSetting3);
})
</script>