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index.html
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<!DOCTYPE html>
<html>
<head>
<title>
Gaussian Process Regression Demo
</title>
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.cursor {
fill: none;
stroke: brown;
pointer-events: none;
}
select.btn {
-webkit-appearance: button;
-moz-appearance: button;
appearance: button;
width: auto;
}
.dot {
stroke: #000;
}
.grid .tick {
stroke: lightgrey;
opacity: 0.7;
}
.grid path{
stroke-width: 0;
}
</style>
<script src="/static/js/d3.min.js"></script>
<script src="/static/js/jquery-1.9.1.min.js"></script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link href="/static/bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
<script src="/static/bootstrap/js/bootstrap.min.js"></script>
</head>
<body id="main">
<div class="page-header"><h2> Gaussian Process Regression Demo <small>based on Shogun-Toolbox</small></h2></div>
<div class="row">
<div class="span9" style="display:inline;"></div>
<div class="span3" style="display:inline;">
<form name="argument">
<label> Sine Freq. </label>
<input style="width:800" type="text" value="2.0" name="frequency" onkeyup="value=value.replace(/[^\d{1,}\.\d{1,}|\d{1,}]/g,'')"></br>
<label> Amplitude </label>
<input type="text" value="2.0" name="amplitude" onkeyup="value=value.replace(/[^\d{1,}\.\d{1,}|\d{1,}]/g,'')"></br>
<label> Noise Level </label>
<input type="text" value="0.1" name="noise_level" onkeyup="value=value.replace(/[^\d{1,}\.\d{1,}|\d{1,}]/g,'')"></br>
<label> Kernel Width </label>
<input type="text" value="2.0" name="kernel_width" onkeyup="value=value.replace(/[^\d{1,}\.\d{1,}|\d{1,}]/g,'')">
<div class="btn-group">
<button type="button" class="btn btn-small btn-primary" id="id_create" onclick="create_toy_data();">Generate Sine Data</button>
<button type="button" class="btn btn-small btn-primary" id="id_train" onclick="train();">Train GP</button>
<button type="button" class="btn btn-small btn-primary" onclick="clear_map();">Clear</button>
</div>
</form>
</div>
</div>
<script>
toy_data = [];
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 660 - margin.left - margin.right,
height = 530 - margin.top - margin.bottom;
var x = d3.scale.linear()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var color = d3.scale.category10();
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
x.domain([-5,5]).nice();
y.domain([-4,4]).nice();
function make_x_axis() {
return d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(10)
}
function make_y_axis() {
return d3.svg.axis()
.scale(y)
.orient("left")
.ticks(8)
}
var svg = d3.select(".span9").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," +
margin.top + ")")
svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_axis()
.tickSize(-height, 0, 0)
.tickFormat("")
)
svg.append("g")
.attr("class", "grid")
.call(make_y_axis()
.tickSize(-width, 0, 0)
.tickFormat("")
)
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height/2 + ")")
.call(xAxis)
.append("text")
.attr("class", "label")
.attr("x", width)
.attr("y", -6)
.style("text-anchor", "end")
.text("X-axis");
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" +width/2 + ", 0)")
.call(yAxis)
.append("text")
.attr("class", "label")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Y-axis");
function clear_map()
{
svg.selectAll(".line")
.transition()
.duration(1000)
.attr("d", start(json))
.remove();
svg.selectAll(".area")
.remove();
svg.selectAll(".dot").remove();
new_points = {"points" : []};
toy_data = [];
}
var end = d3.svg.line()
.x(function (d) { return x(d.x); })
.y(function (d) { return y(d.y); })
.interpolate('basis')
var start = d3.svg.line()
.x(function (d) {return x(d.x); })
.y(function (d) {return y(0); })
.interpolate('basis')
function create_toy_data()
{
$.ajax(
{
url:"create_toy_data",
type: "POST",
dataType: 'text',
data: {csrfmiddlewaretoken: '{{ csrf_token }}',
amplitude: document.argument.amplitude.value ,
frequency: document.argument.frequency.value,
noise_level: document.argument.noise_level.value},
beforeSend: function(){$("#id_create").attr('disabled',true);},
success: function(data){
json = $.parseJSON(data)['data'];
svg.selectAll(".dot").remove();
toy_data = json;
svg.selectAll(".dot")
.data(json)
.enter().append("circle")
.attr("class", "dot")
.attr("r", 1.5)
.attr("cx", function(d) { return x(d.x); })
.attr("cy", function(d) { return y(d.y); })
.style("fill", "red")
.style("stroke", "none");
$("#id_create").attr('disabled', false);
},
error: function(){alert("Cannot connect to server");
$("#id_create").attr('disabled', false);}
});
}
var area_end = d3.svg.area()
.x(function(d) { return x(d.x);})
.y0(function(d) { return y(d.range_lower);})
.y1(function(d) { return y(d.range_upper);});
function train()
{
if (toy_data.length !=0)
$.ajax(
{
url:"train",
type: "POST",
dataType: 'text',
data: {csrfmiddlewaretoken: '{{ csrf_token }}',
toy_data: JSON.stringify(toy_data),
noise_level: document.argument.noise_level.value,
kernel_width: document.argument.kernel_width.value},
beforeSend: function(){$("#id_train").attr('disabled', true);},
success: function(data){
json = $.parseJSON(data);
if (svg.selectAll(".line")[0].length == 0)
svg.append("path")
.attr("class", "line")
.attr("d", start(json))
.style("stroke-width", "2")
.style("stroke", "green")
.style("fill", "none");
svg.selectAll(".line")
.transition().duration(1000)
.attr("d", end(json));
svg.selectAll(".area")
.remove();
svg.append("path")
.datum(json)
.attr("class", "area")
.attr("d", area_end(json))
.style("fill", "rgba(128, 128, 128, 0.25)");
$("#id_train").attr('disabled', false);
},
error: function(){
alert("Error Generated!");
$("#id_train").attr('disabled', false);
}
});
else{
alert("Sorry, there's no dots to train, generate some, pls");
}
}
</script>
</body>
</html>