Binding form to array generated from form values calculations

[John]

i need to generated a simple line chart using an array generated from form value calculations. What is the best way to accomplish this.  I tried the bind to local data, but I don't know how to update the local data based on the array calculations.
PHP array
Array
(
    [0] => Array
        (
            [name] => 0.1
            [value] => 422.19
        )

    [1] => Array
        (
            [name] => 0.2
            [value] => 256.77
        )

    [2] => Array
        (
            [name] => 0.4
            [value] => 143.96
        )...
bound local data
                var windowSizeMbs = [
                    {
                        "country": "United States",
                        "rtt": "0.1mS",
                        "value": 108.81
                    },
                    {
                        "country": "United States",
                        "rttms": "0.2mS",
                        "value": 100.47
                    },
                    {
                        "country": "United States",
                        "rttms": "0.4mS",
                        "value": 87.11
                    },.....

[John]

I got it. To easy

                var windowSizeMbs = [
                    {
                        "charttype": "Throughput vs. RTT",
                        "rtt": "0.1mS",
                        "value": <?php echo $chartArea[0][value]; ?>
                    },
                    {
                        "charttype": "Throughput vs. RTT",
                        "rttms": "0.2mS",
                        "value": <?php echo $chartArea[1][value]; ?>
                    },....