2 - Multiple line graphs with labels

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<!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;
}

.grid .tick {
    stroke: lightgrey;
    stroke-opacity: 0.7;
    shape-rendering: crispEdges;
}

.grid path {
    stroke-width: 0;
}

text.shadow {
    stroke: white;
    stroke-width: 2.5px;
    opacity: 0.9;
}

</style>
<body>

<script src="https://d3js.org/d3.v3.min.js"></script>

// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 40, 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.date); })
        .y(function(d) { return y(d.close); });

var valueline2 = d3.svg.line()
        .x(function(d) { return x(d.date); })
        .y(function(d) { return y(d.open); });
    
// 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 + ")");

//Create grid lines
function make_x_axis() {
    return d3.svg.axis()
            .scale(x)
            .orient("bottom")
            .ticks(5)
}

function make_y_axis() {
    return d3.svg.axis()
            .scale(y)
            .orient("left")
            .ticks(5)
}

// Get the data
d3.csv("data2.csv", function(error, data) {
    data.forEach(function(d) {
        d.date = parseDate(d.date);
        d.close = +d.close;
        d.open = +d.open;
    });

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

// Add the valueline path.
    svg.append("path")
            .attr("class", "line")
            //.style("stroke-dasharray", ("3,3"))
            .attr("d", valueline(data));

svg.append("path")
            .attr("class", "line")
            .style("stroke-dasharray", ("3,3"))
            .style("stroke", "red")
            .attr("d", valueline2(data));

svg.append("g")
            .attr("class", "grid")
            .attr("transform", "translate(0," + height + ")")
            .call(make_x_axis()
                    .tickSize(-height, 0, 0)
                    .tickFormat("")
            )

svg.append("g")
            .attr("class", "grid")
            .call(make_y_axis()
                    .tickSize(-width, 0, 0)
                    .tickFormat("")
            )

// 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);

//White shadow Title
    svg.append("text")
            .attr("x", (width/2))
            .attr("y", 0 - (margin.top / 2))
            .attr("text-anchor", "middle")
            .style("font-size", "16px")
            .style("text-decoration", "underline")
            .attr("class", "shadow")
            .text("Value vs Date Graph");

//Title of the graph
    svg.append("text")
            .attr("x", (width/2))
            .attr("y", 0 - (margin.top / 2))
            .attr("text-anchor", "middle")
            .style("font-size", "16px")
            .style("text-decoration", "underline")
            .text("Value vs Date Graph");

//Text label for the X Axis
    svg.append("text")
            .attr("x", width/2)
            .attr("y", height + margin.bottom)
            .style("text-anchor", "middle")
            .text("Date");

//Text label for the Y Axis
    svg.append("text")
            .attr("transform", "rotate(-90)")
            .attr("y", 0 - margin.left)
            .attr("x", 0 - (height/2))
            .attr("dy", "1em")
            .style("text-anchor", "middle")
            .text("Value");

svg.append("text")
            .attr("transform", "translate(" + (width+3) + "," + y(data[0].open) + ")")
            .attr("dy", ".35em")
            .attr("text-anchor", "start")
            .style("fill", "red")
            .text("Open");

svg.append("text")
            .attr("transform", "translate(" + (width+3) + "," + y(data[0].close) + ")")
            .attr("dy", ".35em")
            .attr("text-anchor", "start")
            .style("fill", "blue")
            .text("Close");

});

</script>
</body>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js