flot yaxis ragne

HTML

<script src="http://people.iola.dk/olau/flot/jquery.flot.js"></script>
<script src="http://jquery-json.googlecode.com/svn/trunk/src/jquery.json.min.js"></script>
  <!--[if lte IE 8]><script language="javascript" type="text/javascript" src="http://people.iola.dk/olau/flot/excanvas.min.js"></script><![endif]-->
<h1>Flot Examples</h1>
<div id="placeholder" style="width:600px;height:300px;"></div>
<button id="plot">plot</button>

JavaScript

$(function() {
    var d1 = [];
    for (var i = 0; i < 14; i += 0.5)
    d1.push([i, Math.sin(i)]);

    var data = [];
    for (i = 0; i < 48; i++) {
        data.push({
            label: "d" + i,
            data: $.map(d1, function(val) {
                return [[val[0], val[1] + i + 1]]
            })
        });

    }
    $.plot($("#placeholder"), [d1], {
        legend: {
            position: "ne",
            noColumns: 6
        }
    });
});
$("#plot").click(function() {
    var d = [];
    for (var i = 0; i < 100; i++) {
        d.push([i,Math.random()]);
    }
    $.ajax({
        url: "/echo/json/",
        type: "POST",
        data: {
            json: $.toJSON({result: d})
        },
        dataType: "json"
    })
        .done(function(data){
                $.plot($("#placeholder"), [data.result], {
        legend: {
            position: "nw",
            noColumns: 6
        }
    });
        })

});