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index1.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="attitudes_arr.js"></script>
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.dot {
stroke: #000;
}
</style>
</head>
<body>
<select id = "student">
<option value="math">Student Maths score</option>
<option value="read">Student Reading score</option>
<option value="scie">Student Science score</option>
</select>
<body>
<select id = "school">
<option value="math">School Maths score</option>
<option value="read">School Reading score</option>
<option value="scie">School Science score</option>
</select>
<body>
<select id = "attitude">
</select>
<script src="d3.v3.min.js"></script>
<script>
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var student_var = "math"
var school_var = "math"
var attitude_var = "ST88Q02"
var school_var = 0;
var x = d3.scale.linear()
.range([0, width]);
var y = d3.scale.linear()
.range([height,0]);
var color = d3.scale.category10();
var color = d3.scale.ordinal().range(['#1f77b4','#9467bd','#2ca02c','#ff7f0e','#d62728'])
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var svg = d3.select("body").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 + ")");
var ukschools
var ukstudents
var remaining = 2
d3.csv("ukschools.csv",function(error, data) {
if (error) throw error;
ukschools = data;
if (!--remaining) drawChart();
})
d3.csv("uk_students.csv", function(error, data) {
if (error) throw error;
ukstudents = data;
if (!--remaining) drawChart();
})
function getColor(d) {
return eval ("d."+attitude_var)
}
function getSchoolGrade(schoolid) {
grade = 0;
ukschools.forEach(function(d) {
d.SCHOOLID = +d.SCHOOLID;
if (d.SCHOOLID == schoolid && grade == 0) {
if (school_var == "maths") {
grade = +d.math;
}
else if (school_var == "read") {
grade = +d.read;
}
else {
grade = +d.scie;
}
}
})
return grade
}
d3.select('#student')
.on('change', function() {
var newData = d3.select(this).property('value');
student_var = newData;
updateChart();
});
d3.select('#school')
.on('change', function() {
var newData = d3.select(this).property('value');
school_var = newData;
updateChart();
});
var attitude_el = document.getElementById("attitude");
for (i = 0; i < attitudes_arr.length;i++) {
var option = document.createElement("option");
option.setAttribute("value", attitudes_arr[i][0]);
option.text = attitudes_arr[i][1];
attitude_el.appendChild(option);
}
d3.select('#attitude')
.on('change', function() {
var newData = d3.select(this).property('value');
attitude_var = newData;
updateChart();
});
function drawChart() {
ukstudents.forEach(function(d) {
d.maths = Math.floor(+d.maths);
d.scie = Math.floor(+d.scie);
d.read = Math.floor(+d.read);
if (student_var == "maths") {
d_student_var = d.maths
}
else if (student_var == "read") {
d_student_var = d.read
}
else {
d_student_var = d.scie
}
d.SCHOOLID = +d.SCHOOLID;
});
x.domain([300,700]);
// x.domain(d3.extent(ukstudents, function(d) { return getSchoolGrade(d.SCHOOLID); })).nice();
y.domain([150,800]);
var xlab = document.getElementById("school");
xlabtxt = xlab.selectedIndex
xlabtxt = xlab.options[xlabtxt].text
var ylab = document.getElementById("school");
ylabtxt = ylab.selectedIndex
ylabtxt = ylab.options[ylabtxt].text
svg.selectAll(".y_label")
.text(ylabtxt)
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("class", "x_label")
.attr("x", width)
.attr("y", -6)
.style("text-anchor", "end")
.text(xlabtxt);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("class", "y_label")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text(ylabtxt)
svg.selectAll(".dot")
.data(ukstudents)
.enter().append("circle")
.attr("class", "dot")
.attr("r", 1.5)
.attr("cx", function(d) { return x(getSchoolGrade(d.SCHOOLID)); })
.attr("cy", function(d) {
y_value = 0;
if (student_var == "maths") {
y_value = y(d.maths);
}
else if (student_var == "read") {
y_value = y(d.read);
}
else {
y_value = y(d.scie);
}
return y_value
})
.attr('fill-opacity', 0.5)
.attr('stroke-opacity', 0.5)
.style("stroke", function(d) {
return color(getColor(d))})
.style("fill", function(d) {
return getColor(d)})
.style("display", function(d) {
return getColor(d) == "" ? "none" : null; });
var legend = svg.selectAll(".legend")
.data([color.domain()[4],color.domain()[3],color.domain()[0],color.domain()[2]])
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; })
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d; });
};
function updateChart() {
svg.selectAll(".dot").transition()
.duration(3000)
.attr("cx", function(d) { return x(getSchoolGrade(d.SCHOOLID)); })
.attr("cy", function(d) {
y_value = 0;
if (student_var == "maths") {
y_value = y(d.maths);
}
else if (student_var == "read") {
y_value = y(d.read);
}
else {
y_value = y(d.scie);
}
return y_value
})
.attr('fill-opacity', 0.5)
.attr('stroke-opacity', 0.5)
.style("stroke", function(d) {
return color(getColor(d))})
.style("fill", function(d) {
return getColor(d)})
.style("display", function(d) {
return getColor(d) == "" ? "none" : null; });
var xlab = document.getElementById("school");
xlabtxt = xlab.selectedIndex
xlabtxt = xlab.options[xlabtxt].text
svg.selectAll(".x_label")
.text(xlabtxt)
var ylab = document.getElementById("school");
ylabtxt = ylab.selectedIndex
ylabtxt = ylab.options[ylabtxt].text
svg.selectAll(".y_label")
.text(ylabtxt)
}
</script>