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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<!-- Bootstrap -->
<!-- <link href="lib/Bootstrap/css/bootstrap.min.css" rel="stylesheet"> -->
<link href="q7.css" type="text/css" rel="stylesheet" />
<script src="lib/d3.v3.min.js"></script>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div>
<!-- create a drop down menu -->
<label for="xdropdown">State: </label><select id="xdropdown" name="state" size="1">
<option value="AK">AK</option>
<option value="AL">AL</option>
<option value="AR">AR</option>
<option value="AZ">AZ</option>
<option value="CA">CA</option>
<option value="CO">CO</option>
<option value="CT">CT</option>
<option value="DC">DC</option>
<option value="DE">DE</option>
<option value="FL">FL</option>
<option selected="selected" value="GA">GA</option>
<option value="HI">HI</option>
<option value="IA">IA</option>
<option value="ID">ID</option>
<option value="IL">IL</option>
<option value="IN">IN</option>
<option value="KS">KS</option>
<option value="KY">KY</option>
<option value="LA">LA</option>
<option value="MA">MA</option>
<option value="MD">MD</option>
<option value="ME">ME</option>
<option value="MI">MI</option>
<option value="MN">MN</option>
<option value="MO">MO</option>
<option value="MS">MS</option>
<option value="MT">MT</option>
<option value="NC">NC</option>
<option value="ND">ND</option>
<option value="NE">NE</option>
<option value="NH">NH</option>
<option value="NJ">NJ</option>
<option value="NM">NM</option>
<option value="NV">NV</option>
<option value="NY">NY</option>
<option value="OH">OH</option>
<option value="OK">OK</option>
<option value="OR">OR</option>
<option value="PA">PA</option>
<option value="RI">RI</option>
<option value="SC">SC</option>
<option value="SD">SD</option>
<option value="TN">TN</option>
<option value="TX">TX</option>
<option value="UT">UT</option>
<option value="VA">VA</option>
<option value="VT">VT</option>
<option value="WA">WA</option>
<option value="WI">WI</option>
<option value="WV">WV</option>
<option value="WY">WY</option>
</select>
</div>
<!-- create a update button after selecting the states -->
<div style="display: table-cell; width: 150;">
<button id="update" onclick="updateClicked()">Update</button>
</div>
<script>
var w = 700;
var h = 600;
var legend = 300;
var padding = 50;
var svg = d3.select("body")
.append("svg")
.attr("width", w+legend)
.attr("height", h);
d3.csv("cleaned_college_data.csv", callback);
// Returns the selected option in the X-axis dropdown.
function getSelectedOption(){
var node = d3.select('#xdropdown').node();
var i = node.selectedIndex;
return node[i].value;
}
// Update upon click
function updateClicked(){
d3.csv('cleaned_college_data.csv',callback);
}
function callback(data){
var dollar = d3.format("$,");
var percent = d3.format("%,");
data.forEach(function(d){
d.md_earn = +d.md_earn;
d.debt = +d.debt;
d.ug_size = +d.ug_size;
});
var data_st = [];
var data_nest = d3.nest().key(function(d){return d.state;}).entries(data);
data_nest.forEach(function(d){
if (d.key == getSelectedOption()){
data_st = d.values;
}
});
d3.selectAll(".plot").remove();
var plot = svg.append("g").attr("class","plot");
//define scale for scatter plot
var x = d3.scale.linear();
var y = d3.scale.linear();
var z = d3.scale.linear();
//define ranges for each axis
x.domain([d3.min(data_st, function(d){return +d.md_earn;})*0.8, d3.max(data_st, function(d){return +d.md_earn;})*1.1]);
x.range([padding,w-padding]);
console.log(x.domain());
y.domain([d3.min(data_st, function(d){return d.debt;})*0.8, d3.max(data_st, function(d){return d.debt;})*1.1]);
y.range([h-padding,padding]);
z.domain([d3.min(data_st, function(d){return +d.ug_size;})*0.8, d3.max(data_st, function(d){return +d.ug_size;})*1.1]);
z.range([5,20]);
var o = d3.scale.ordinal().domain(["1","2","3"]).range(["#d7191c","#fdae61","#2b83ba"]);
//draw the x,y axis
var xAxis = d3.svg.axis().scale(x).orient("bottom").tickFormat(dollar).ticks(8);
var yAxis = d3.svg.axis().scale(y).orient("left").tickFormat(dollar).ticks(10);
plot.append("g").attr("class", "axis").call(xAxis)
.attr("transform", "translate(0," + (h-padding) + ")");
plot.append("g").attr("class", "axis").call(yAxis)
.attr("transform", "translate("+ padding + ",0)");
//draw the main body of the scatter polot
plot.selectAll("circle").data(data_st).enter()
.append("circle")
.attr("cx", function(d){return x(d.md_earn);})
.attr("cy", function(d){return y(d.debt);})
.attr("r", function(d){return z(d.ug_size);})
.attr("fill", function(d){return o(d.type);})
.attr("opacity", 0.7)
.on("mouseover",function(d){
d3.select(this).attr("fill","#404040");
show_name(d);
})
.on("mouseout",function(d){
d3.select(this).attr("fill",function(d){return o(d.type);});
remove_name(d);
})
.on("click", function(d){
show_info(d);
});
d3.selectAll(".info").remove();
//draw the college information on the right side of the panel
var info = plot.append("g").attr("class", "info1")
.attr("transform", "translate(0," + 6 + ")");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 80)
.text("Name of Institution: ")
.style("fill", "black");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 120)
.text("Location: ")
.style("fill", "black");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 160)
.text("% of Student Accepted Loans: " )
.style("fill", "black");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 200)
.text("Median Loan Debt after Graduation: " )
.style("fill", "black");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 240)
.text("Median Starting Salary: " )
.style("fill", "black");
info.append("text").attr("class","info1")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 280)
.text("# of Undergraduate Student: " )
.style("fill", "black");
//create labels
plot.append("text")
.attr("class", "label")
.attr("text-anchor", "end")
.attr("x", w -padding)
.attr("y", h - padding-5)
.text("Median Starting Salary");
plot.append("text")
.attr("class", "label")
.attr("text-anchor", "end")
.attr("x", -60)
.attr("y", padding+5)
.attr("dy", ".75em")
.attr("transform", "rotate(-90)")
.text("Median Loan Debt after Graduation")
plot.selectAll(".label")
.attr("font-family", "sans-serif")
.attr("font-size", 10);
//draw a title
plot.append("text")
.attr("class", "title")
.attr("text-anchor", "middle")
.attr("x", w/2)
.attr("y", padding/2)
.text("Did You Spend Your Education Expense Wisely? College Debt vs. Earning")
.attr("font-family", "sans-serif")
.attr("font-size", 15);
//draw a legend
var legend = plot.selectAll(".legend")
.data(["1","2","3"])
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(" + (w+20) + "," + (400 + i * 30) + ")"; });
var cate = ["Public", "Private Non-Profit", "Private For-Profit"];
legend.append("circle")
.attr("r", 10)
.attr("fill", function(d){return o(d);})
.attr("opacity", 0.7)
legend.append("text").attr("class", "legend")
.attr("x", 20)
.attr("dy", ".35em")
.text(function(d,i){return cate[i];});
plot.append("text")
.attr("class", "label")
.attr("x", w+10)
.attr("y", 500)
.text("Note: Size of circles represents");
plot.append("text")
.attr("class", "label")
.attr("x", w+10)
.attr("y", 510)
.text("the size of undergraduate population");
//functions on hover and on click
function show_name(d){
plot.append("text")
.attr("class","inplot")
.attr("text-anchor", "middle")
.attr("x", x(d.md_earn))
.attr("y", y(d.debt)-z(d.ug_size)-3)
.text(d.name)
.attr("fill", "black");
}
function remove_name(d){
d3.selectAll("text.inplot").remove();
}
function show_info(d){
d3.selectAll(".info").remove();
var info = plot.append("g").attr("class", "info")
.attr("transform", "translate(0," + 6 + ")");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 95)
.text(d.name)
.style("fill", "black");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 135)
.text(d.city + ", " + d.state)
.style("fill", "black");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 175)
.text(percent(d.pct_loan))
.style("fill", "black");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 215)
.text(dollar(d.debt))
.style("fill", "black");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 255)
.text(dollar(d.md_earn))
.style("fill", "black");
info.append("text").attr("class","info")
.attr("text-anchor", "start")
.attr("x", w)
.attr("y", 295)
.text(d.ug_size)
.style("fill", "black");
}
}
</script>
</body>
</html>