Updating plots (SO)

by Ryan

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<div id="graph" class="aGraph" style="position:absolute;top:0px;left:0; float:left;"></div>
<body></body>

CSS

/* tell the SVG path to be a thin blue line without any area fill */
    svg {
        border: 1px solid red;
    }
    .text-anchor {
        font-size: 10px;
    }
    path {
        stroke: steelblue;
        stroke-width: 1;
        fill: none;
    }
    .axis {
        shape-rendering: crispEdges;
    }
    .x.axis line {
        stroke: lightgrey;
    }
    .x.axis .minor {
        stroke-opacity: .5;
    }
    .x.axis path {
        display: none;
    }
    .y.axis line, .y.axis path {
        fill: none;
        stroke: #000;
    }
    .line {
        fill: none;
        stroke-width: 1.5px;
    }

JavaScript

var chart_data;
//will receive the data from the server in this format
json = ["{\"created_at\":1385481755,\"rankings\":[[\"#OBAMA\",91],[\"#TCOT\",65],[\"#OBAMACARE\",26],[\"#IRAN\",25],[\"#MTVSTARS\",20],[\"#BENGHAZI\",17],[\"#TEAPARTY\",16],[\"#LNYHBT\",12],[\"#PJNET\",11],[\"#CARAMEL\",11]]}", "{\"created_at\":1385481749,\"rankings\":[[\"#OBAMA\",90],[\"#TCOT\",64],[\"#OBAMACARE\",26],[\"#IRAN\",25],[\"#MTVSTARS\",19],[\"#BENGHAZI\",17],[\"#TEAPARTY\",16],[\"#LNYHBT\",12],[\"#PJNET\",11],[\"#CARAMEL\",11]]}", "{\"created_at\":1385481743,\"rankings\":[[\"#OBAMA\",90],[\"#TCOT\",64],[\"#OBAMACARE\",26],[\"#IRAN\",25],[\"#MTVSTARS\",18],[\"#BENGHAZI\",17],[\"#TEAPARTY\",16],[\"#LNYHBT\",12],[\"#PJNET\",11],[\"#CARAMEL\",11]]}", "{\"created_at\":1385481737,\"rankings\":[[\"#OBAMA\",93],[\"#TCOT\",63],[\"#OBAMACARE\",28],[\"#IRAN\",27],[\"#MTVSTARS\",18],[\"#BENGHAZI\",17],[\"#TEAPARTY\",16],[\"#PJNET\",12],[\"#POPCORN\",11],[\"#CARAMEL\",11]]}", "{\"created_at\":1385481731,\"rankings\":[[\"#OBAMA\",91],[\"#TCOT\",64],[\"#OBAMACARE\",29],[\"#IRAN\",27],[\"#MTVSTARS\",17],[\"#BENGHAZI\",17],[\"#TEAPARTY\",15],[\"#POPCORN\",11],[\"#CARAMEL\",11],[\"#IMMIGRATION\",11]]}", "{\"created_at\":1385481725,\"rankings\":[[\"#OBAMA\",61],[\"#TCOT\",63],[\"#OBAMACARE\",28],[\"#IRAN\",26],[\"#MTVSTARS\",17],[\"#BENGHAZI\",16],[\"#TEAPARTY\",13],[\"#IMMIGRATION\",11],[\"#CARAMEL\",11],[\"#POPCORN\",11]]}", "{\"created_at\":1385481719,\"rankings\":[[\"#OBAMA\",93],[\"#TCOT\",64],[\"#OBAMACARE\",28],[\"#IRAN\",26],[\"#MTVSTARS\",18],[\"#BENGHAZI\",16],[\"#TEAPARTY\",13],[\"#IMMIGRATION\",12],[\"#CARAMEL\",11],[\"#POPCORN\",11]]}", "{\"created_at\":1385481713,\"rankings\":[[\"#OBAMA\",93],[\"#TCOT\",33],[\"#OBAMACARE\",28],[\"#IRAN\",26],[\"#MTVSTARS\",18],[\"#BENGHAZI\",16],[\"#TEAPARTY\",13],[\"#IMMIGRATION\",12],[\"#POPCORN\",11],[\"#CARAMEL\",11]]}",...