nacyot/putne

// This code based on d3 example(http://bl.ocks.org/mbostock/3883245).
 
this.d3_line_chart = function(selector = "#line-graph", data_file = "/d3js/line_graph.tsv"){
    var target = d3.select(selector);
    var parentWidth = target[0][0].parentNode.clientWidth;

    var margin = {top: 20, right: 80, bottom: 30, left: 50};
    var width = parentWidth - margin.left - margin.right;
    var height = (parentWidth * 0.7) - margin.top - margin.bottom;

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

    var x = d3.time.scale()
        .range([0, width]);

    var y = d3.scale.linear()
        .range([height, 0]);

    var xAxis = d3.svg.axis()
        .scale(x)
        .orient("bottom");

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

    var line = d3.svg.line()
        .x(function(d) { return x(d.date); })
        .y(function(d) { return y(d.close); });

    var svg = target.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 + ")");

    d3.tsv(data_file, function(error, data) {
        data.forEach(function(d) {
            d.date = parseDate(d.date);
            d.close = +d.close;
        });

        x.domain(d3.extent(data, function(d) { return d.date; }));
        y.domain(d3.extent(data, function(d) { return d.close; }));

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

        svg.append("g")
            .attr("class", "y axis")
            .call(yAxis)
            .append("text")
            .attr("transform", "rotate(-90)")
            .attr("y", 6)
            .attr("dy", ".71em")
            .style("text-anchor", "end")
            .text("Price ($)");

        svg.append("path")
            .datum(data)
            .attr("class", "line")
            .attr("d", line);
    });
}