Graph and table with tricks

This is a follow on from the simple d3.js graph with table used as an example in the book D3 Tips and Tricks.

It demonstrates the generation of a graph and a html table with a few alterations. It should be taken in context with the text of the book which can be downloaded for free from Leanpub.

<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */

body { font: 12px Arial;}

path { 
    stroke: steelblue;
    stroke-width: 2;
    fill: none;
}

.axis path,
.axis line {
    fill: none;
    stroke: grey;
    stroke-width: 1;
    shape-rendering: crispEdges;
}

td, th {
    padding: 1px 4px;
    border: 1px black solid;
}

</style>
<body>

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>

// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 20, bottom: 30, left: 50},
    width = 600 - margin.left - margin.right,
    height = 270 - margin.top - margin.bottom;

// Parse the date / time
var parseDate = d3.time.format("%d-%b-%y").parse;

// Set the ranges
var x = d3.time.scale().range([0, width]);
var y = d3.scale.linear().range([height, 0]);

// Define the axes
var xAxis = d3.svg.axis().scale(x)
    .orient("bottom").ticks(5);

var yAxis = d3.svg.axis().scale(y)
    .orient("left").ticks(5);

// Define the line
var valueline = d3.svg.line()
	.x(function(d) { return x(d.date1); })
    .y(function(d) { return y(d.close); });
    
// Adds the svg canvas
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 + ")");

// Get the data
d3.csv("data2.csv", function(error, data) {
    data.forEach(function(d) {
		d.date1 = parseDate(d.date);    //  <= Change to date1
        d.close = +d.close;
        d.open = +d.open;  //  <= added this for tidy house keeping
        d.diff = Math.round(( d.close - d.open ) * 100 ) / 100;
    });

// Scale the range of the data
	x.domain(d3.extent(data, function(d) { return d.date1; }));//<=date1
    y.domain([0, d3.max(data, function(d) { return d.close; })]);

// Add the valueline path.
    svg.append("path")
        .attr("class", "line")
        .attr("d", valueline(data));

// Add the X Axis
    svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

// Add the Y Axis
    svg.append("g")
        .attr("class", "y axis")
        .call(yAxis);

// The table generation function
function tabulate(data, columns) {
    var table = d3.select("body").append("table")
            .attr("style", "margin-left: 200px")
            .style("border-collapse", "collapse")// <= Add this line in
            .style("border", "2px black solid"), // <= Add this line in
        thead = table.append("thead"),
        tbody = table.append("tbody");

// append the header row
    thead.append("tr")
        .selectAll("th")
        .data(columns)
        .enter()
        .append("th")
            .text(function(column) { return column; });

// create a row for each object in the data
    var rows = tbody.selectAll("tr")
        .data(data)
        .enter()
        .append("tr");

// create a cell in each row for each column
    var cells = rows.selectAll("td")
        .data(function(row) {
            return columns.map(function(column) {
                return {column: column, value: row[column]};
            });
        })
        .enter()
        .append("td")
        .attr("style", "font-family: Courier") // sets the font style
            .html(function(d) { return d.value; });
    
    return table;
}

// render the table
var peopleTable = tabulate(data, ["date", "close", "open", "diff"]);

peopleTable.selectAll("tbody tr") 
        .sort(function(a, b) {
                return d3.descending(a.close, b.close);
        });

peopleTable.selectAll("thead th")
        .text(function(column) {
                return column.charAt(0).toUpperCase()+column.substr(1);
        });

});

</script>
</body>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js