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events4.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Simple Event Example</title>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<style type="text/css">
.axis text{
font-family:sans-serif;
font-size:11px;
}
.axis path,
.axis line{
fill:none;
stroke:gray;
shape-rendering: crisp-edges;
}
circle.selected{
fill:red;
}
circle{
fill:black;
}
#controls{
float:left;
}
#info{
position:absolute;
width:300px;
height:auto;
padding:10px;
background-color:white;
border-radius:10px;
box-shadow: 4px 4px 10px rgba(0,0,0,0.4);
}
#info.hidden{
display:none;
}
#info p{
margin:0px;
font-family:sans-serif;
font-size:12px;
}
.extent{
fill:#000;
fill-opacity:.25;
stroke:#fff;
}
</style>
</head>
<body>
<div id="visDiv"></div>
<div id="controls">
<p>X Axis: <select id="xSelect"><optgroup label="Metrics" id="xmetrics"></optgroup></select></p>
<p>Y Axis: <select id="ySelect"><optgroup label="Metrics" id="ymetrics"></optgroup></select></p>
</div>
<div id="info" class="hidden">
<p id="state">State</p>
<p><span id="variable1">Variable X</span>: <span id="value1">Value 1</span></p>
<p><span id="variable2">Variable Y</span>: <span id="value2">Value 2</span></p>
</div>
<script>
var createVis = function(parent, width, height){
var dataset, xData, yData;
var margins = {top:20, bottom:60, left: 60, right:20};
var chartWidth = width - margins.left - margins.right;
var chartHeight = height - margins.top - margins.bottom;
var xScale = d3.scale.linear().range([0, chartWidth]);
var yScale = d3.scale.linear().range([chartHeight, 0]);
var xAxis = d3.svg.axis().scale(xScale).orient("bottom");
var yAxis = d3.svg.axis().scale(yScale).orient("left");
var brush = d3.svg.brush();
var svg = d3.select(parent)
.append("svg")
.attr({width:width, height:height});
var chart = svg.append("g")
.attr("transform", "translate("+margins.left + "," + margins.top + ")");
var xAxisG = chart.append("g")
.attr({"class": "axis",
"transform": "translate(0," + chartHeight +")"});
var yAxisG = chart.append("g")
.attr({"class": "axis"});
var vis = function(){
xScale.domain(d3.extent(dataset, function(d){return +d[xData];}));
yScale.domain(d3.extent(dataset, function(d){return +d[yData];}));
var circles = chart.selectAll("circle").data(dataset);
circles.exit().remove();
circles.enter().append("circle");
circles.transition()
.duration(1000)
.attr({
cx: function(d){return xScale(+d[xData]);},
cy: function(d){return yScale(+d[yData]);},
r : 2
});
circles.on("mouseover", function(d){
// d3.select(this)
// .classed("selected", true)
// .attr("r", 8);
var info = d3.select("#info");
info.select("#state").text(d.State);
info.select("#variable1").text(xData);
info.select("#value1").text(d[xData]);
info.select("#variable2").text(yData);
info.select("#value2").text(d[yData]);
var coordinates = d3.mouse(svg.node());
var bbox = svg.node().getBoundingClientRect();
coordinates[0] += bbox.left;
coordinates[1] += bbox.top;
info.style({
left: (coordinates[0] + 25) + "px",
top: (coordinates[1] ) + "px",
})
.classed("hidden", false);
})
.on("mouseout", function(d){
// d3.select(this)
// .classed("selected", false)
// .attr("r", 2);
var info = d3.select("#info");
info.classed("hidden", true);
});
xAxisG.call(xAxis);
yAxisG.call(yAxis);
brush.x(xScale)
.y(yScale)
.on("brushstart", function(){
chart.selectAll("circle").classed("selected", false);
})
.on("brush", function(){
var e = brush.extent();
chart.selectAll("circle").classed("selected", false);
chart.selectAll("circle").filter(function(d){
x = +d[xData];
y = +d[yData];
return x >= e[0][0] && x <= e[1][0] && y >= e[0][1] && y <= e[1][1];
}).classed("selected", true);
})
.on("brushend", function(){
chart.call(brush.clear());
});
chart.call(brush);
};
vis.loadData = function(data){
dataset = data;
return vis;
}
vis.setX = function(value){
if (!arguments.length) return xData;
xData = value;
return vis;
}
vis.setY = function(value){
if (!arguments.length) return yData;
yData = value;
return vis;
}
return vis;
};
var vis = createVis("#visDiv", 400,400);
vis.setX("perCollege")
.setY("income");
d3.csv("http://www.cs.middlebury.edu/~candrews/classes/infovis/data/census.csv",
function(dataset){
vis.loadData(dataset);
vis();
var xmenu = d3.select("#xmetrics");
var ymenu = d3.select("#ymetrics");
for (prop in dataset[0]){
if (prop != "State" && prop != "stateAbbr"){
xmenu.append("option").attr("value", prop).text(prop);
ymenu.append("option").attr("value", prop).text(prop);
}
}
document.getElementById('xSelect').value = "perCollege";
document.getElementById('ySelect').value = "income";
d3.select("#xSelect").on("change", function(){
vis.setX(this.value);
vis();
});
d3.select("#ySelect").on("change", function(){
vis.setY(this.value);
vis();
});
});
</script>
</body>
</html>