Discontinuous Line chart

[1aman11]

Hi ,

I am trying to create a discontinuous line multi series line chart. However, the line is not formed when there are no atleast  two continuous null values. With just one Null value, the result is  a bubble not a line as expected.

 I am attaching a screenshot of the same. Here on the top i want to make the line go till the 11:00 and then next at bottom to start till next data point. However, on top the line stops at  second data point and on lower line, its just a bubble. not a line  as the next value is not null value.

 

To feed in the data, I am using two arrays as follow

$transport=array("20","20","15","20","15","20","20","20");
            $transport1=array("5","5","10","5","10","5","5","5");

 

After this , there is a logic to only accept the value if its 20 or 10 in second array , else make it Null as follow

if (($transport[$i])==20)
                    {
                                                    
                    $set->addAttribute('value',round($transport[$i]));
                                                    }

 

similar goes for second line 

if (($transport1[$i])==10)
                    {
                                                    
                    $set1->addAttribute('value',round($transport1[$i]));
                                                    }

 

Can someone please guide through his problem?

 

Regards,

Aman