[pieter]

Hi Bivek,

Okay, I tried a bit:

        <script type="text/javascript">
 
            $(function () {
                  
                var chart = new CanvasJS.Chart("chartContainer", {
                    theme: "theme2",
                    zoomEnabled: true,
                    animationEnabled: true,
                    title: {
                        text: "Historical Population Graph:" 
                    },
                    subtitles:[
                        {   text: "(Try Zooming & Panning)" }
                    ],
                    data: [
                    {
                        type: "line",                
                          
                        dataPoints: <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK);?>
                        
                    
                    
                    },
                    
                    {       
                    type: "line",
                             dataPoints: <?php echo json_encode($dataPoints2, JSON_NUMERIC_CHECK);?>
                             
                    }
                    ]
                    
                });
                chart.render();
            });
        </script>

This code doesnt work yet. It still works for graphs with one line. If I put the “[]” parentheses around each dataPoints (as done in the example), the code isnt working for one line graphs.

[pieter]

I thought I add some code, which is above the code given above.

  $dataPoints = array();
        $y = 40;
        for($i = $sy; $i <= $ey; $i++){
            $y += rand(0, 10) - 5; 
            array_push($dataPoints, array("x" => $i, "y" => $_SESSION["{$var}"][$i-$sy]));
        }
        
    if ($var=="bd")
    {
      $dataPoints = array();
        $y = 40;
        for($i = $sy; $i <= $ey; $i++){
            $y += rand(0, 10) - 5; 
            array_push($dataPoints, array("x" => $i, "y" => $_SESSION["{$br}"][$i-$sy]));
        }
        
      $dataPoints2 = array();
              $y = 40;
        for($i = $sy; $i <= $ey; $i++){
            $y += rand(0, 10) - 5; 
            array_push($dataPoints2, array("x" => $i, "y" => $_SESSION["{$dr}"][$i-$sy]));
        }
    }
    ?>

Here I fill dataPoints2. As mentioned in the OP, the code works fine for one line graphs (so if var is NOT “bd”).

• This reply was modified 7 years, 5 months ago by pieter.

[pieter]

Hello Hannah,
Sorry I do not have the answer for your question, but can you please say how you start a thread? Yeah it sounds banal and simple but I do not see the button where to make a thread, and I like to make a thread on this forum as I have a question.

Thanks for answering