//Setting The Dimensions Of The Canvas
var margin = {top: 20, right: 20, bottom: 70, left: 40},
width = 650 - margin.left - margin.right,
height = 350 - margin.top - margin.bottom;
//Setting X & Y Ranges
var x = d3.scaleOrdinal().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);
//Define The Axes
var xAxis = d3.axisBottom().scale(x);
var yAxis = d3.axisLeft().scale(y).ticks(10);
//Add The SVG Element
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right + 50)
.attr("height", height + margin.top + margin.bottom + 200)
.attr("class", "svg")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//Load Data From JSON
d3.json("busdatasimple.json", function(error, data) {
//Functions for Y-Axis Grid Lines
function yGridLines() {
return d3.axisLeft().scale(y).ticks(5);
}
//Adding the Y-Axis Grid Lines
svg.append("g")
.attr("class", "grid-lines")
.call(yGridLines().tickSize(-width, 0, 0).tickFormat(""));
//Adding Y-Axis
svg.append("g")
.attr("class", "y axis").call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 5)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Passengers In");
//Adding X-Axis (Added to the end of the code so the label show over bottom bars)
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text")
.style("text-anchor", "middle")
//.attr("dx", "-.8em")
.attr("dy", "-.55em")
.attr("transform", "translate(-5, 15)")
.attr("font-family", "Arial")
.attr("font-weight", "bold")
.attr("font-size", "1.1em");
x.domain(data.map(function(d){return d.Destination;}));
y.domain([d3.min(data, function(d){return d.PassengersIn;}), d3.max(data, function(d) {return d.PassengersIn;})]);
var line = d3.line()
.x(function(d){return x(d.Destination);})
.y(function(d){return y(d.PassengersIn);});
svg.append("path").datum(data)
.attr("class", "line")
.attr("d", function(d){return d.PassengersIn;})
.attr("stroke", "green")
.attr("stroke-width", 2);
});