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<meta charset="utf-8">
<style type="text/css">
/* 13. Basic Styling with CSS */
/* Style the lines by removing the fill and applying a stroke */
.line {
fill: none;
stroke: #ffab00;
stroke-width: 3;
}
/* Style the dots by assigning a fill and stroke */
.dot {
fill: #ffab00;
stroke: #fff;
}
</style>
<!-- Body tag is where we will append our SVG and SVG objects-->
<body>
</body>
<!-- Load in the d3 library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
// 2. Use the margin convention practice
var margin = {top: 50, right: 50, bottom: 50, left: 50}
, width = window.innerWidth - margin.left - margin.right // Use the window's width
, height = window.innerHeight - margin.top - margin.bottom; // Use the window's height
// var parseTime = d3.timeParse("%y");
// The number of datapoints
var dataset = [];
d3.csv("billionaires.csv", function(error, data) {
if(error) throw error;
// format the data
data.forEach(function(d) {
if(d.name=="Bill Gates"){
dataset.push({year:parseInt(d.year), worth:parseFloat(d.worth)});
}
});
console.log(dataset);
// 5. X scale will use the index of our data
var xScale = d3.scaleLinear()
.domain([1995, d3.max(dataset, function(d){ return d.year; })+1]) // input
.range([0, width]); // output
// 6. Y scale will use the randomly generate number
var yScale = d3.scaleLinear()
.domain([0, d3.max(dataset, function(d){ return d.worth; })]) // input
.range([height, 0]); // output
// 7. d3's line generator
var line = d3.line()
.x(function(d) { return xScale(d.year); }) // set the x values for the line generator
.y(function(d) { return yScale(d.worth); }) // set the y values for the line generator
// .curve(d3.curveMonotoneX) // apply smoothing to the line
// 8. An array of objects of length N. Each object has key -> value pair, the key being "y" and the value is a random number
// var dataset = d3.range(n).map(function(d) { return {"y": d3.randomUniform(1)() } })
// 1. Add the SVG to the page and employ #2
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 + ")");
// 3. Call the x axis in a group tag
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(xScale).tickFormat(d3.format("d")).ticks(3)); // Create an axis component with d3.axisBottom
// 4. Call the y axis in a group tag
svg.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(yScale)); // Create an axis component with d3.axisLeft
// 9. Append the path, bind the data, and call the line generator
svg.append("path")
.datum(dataset) // 10. Binds data to the line
.attr("class", "line") // Assign a class for styling
.attr("d", line); // 11. Calls the line generator
// 12. Appends a circle for each datapoint
svg.selectAll(".dot")
.data(dataset)
.enter().append("circle") // Uses the enter().append() method
.attr("class", "dot") // Assign a class for styling
.attr("cx", function(d) { return xScale(d.year) })
.attr("cy", function(d) { return yScale(d.worth) })
.attr("r", 5);
// text label for the x axis
svg.append("text")
.attr("transform",
"translate(" + (width-5) + " ," +
(height + margin.top-5) + ")")
.style("text-anchor", "middle")
.style("font-size", "15px")
.text("Year");
// text label for the y axis
svg.append("text")
.attr("transform",
"translate(" + (0) + " ," +
(-20) + ")")
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("billion USD");
svg.append("text")
.attr("x", (width / 2))
.attr("y", 30-(margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("text-decoration", "underline")
.text("Bill Gate's networth over years");
});
</script>
https://d3js.org/d3.v4.min.js