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+/* ------------------------------------------------------------------------------
+ *
+ *  # D3.js - spline transition
+ *
+ *  Demo d3.js line chart setup with spline transition
+ *
+ *  Version: 1.0
+ *  Latest update: August 1, 2015
+ *
+ * ---------------------------------------------------------------------------- */
+
+$(function () {
+
+    // Initialize chart
+    splineTrransition('#d3-spline-transition', 400);
+
+    // Chart setup
+    function splineTrransition(element, height) {
+
+
+        // Basic setup
+        // ------------------------------
+
+        // Define main variables
+        var d3Container = d3.select(element),
+            margin = {top: 5, right: 5, bottom: 5, left: 30},
+            width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right,
+            height = height - margin.top - margin.bottom - 5;
+
+        // Add data
+        var n = 50,
+            random = d3.random.normal(0, .35),
+            data = d3.range(n).map(random);
+
+
+        // Construct scales
+        // ------------------------------
+
+        // Horizontal
+        var x = d3.scale.linear()
+            .domain([1, n - 2])
+            .range([0, width]);
+
+        // Vertical
+        var y = d3.scale.linear()
+            .domain([-1, 1])
+            .range([height, 0]);
+
+
+
+        // Create axes
+        // ------------------------------
+
+        // Horizontal
+        var xAxis = d3.svg.axis()
+            .scale(x)
+            .orient("bottom");
+
+        // Vertical
+        var yAxis = d3.svg.axis()
+            .scale(y)
+            .orient("left");
+
+
+
+        // Create chart
+        // ------------------------------
+
+        // Add SVG element
+        var container = d3Container.append("svg");
+
+        // Add SVG group
+        var svg = container
+            .attr("width", width + margin.left + margin.right)
+            .attr("height", height + margin.top + margin.bottom)
+            .append("g")
+                .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
+
+
+
+        // Construct chart layout
+        // ------------------------------
+
+        // Line
+        var line = d3.svg.line()
+            .interpolate("basis")
+            .x(function(d, i) { return x(i); })
+            .y(function(d, i) { return y(d); });
+
+
+
+        //
+        // Append chart elements
+        //
+
+        // Add mask
+        svg.append("defs")
+            .append("clipPath")
+                .attr("id", "transition-clip")
+                .append("rect")
+                    .attr("width", width)
+                    .attr("height", height);
+
+
+        // Append axes
+        // ------------------------------
+
+        // Horizontal
+        svg.append("g")
+            .attr("class", "d3-axis d3-axis-horizontal d3-axis-strong")
+            .attr("transform", "translate(0," + y(0) + ")")
+            .call(xAxis);
+
+        // Vertical
+        svg.append("g")
+            .attr("class", "d3-axis d3-axis-vertical d3-axis-strong")
+            .call(yAxis);
+
+
+        // Add line
+        var path = svg.append("g")
+            .attr("clip-path", "url(#transition-clip)")
+            .append("path")
+                .datum(data)
+                .attr("d", line)
+                .attr("class", "d3-line d3-line-medium")
+                .style("stroke", "#607D8B");
+
+
+        // Transition
+        // ------------------------------
+
+        // Initialize transition
+        tick();
+
+        // Setup transition
+        function tick() {
+
+            // push a new data point onto the back
+            data.push(random());
+
+            // redraw the line, and slide it to the left
+            path
+                .attr("d", line)
+                .attr("transform", null)
+                .transition()
+                    .duration(500)
+                    .ease("linear")
+                    .attr("transform", "translate(" + x(0) + ",0)")
+                    .each("end", tick);
+
+            // pop the old data point off the front
+            data.shift();
+        }
+
+
+
+        // Resize chart
+        // ------------------------------
+
+        // Call function on window resize
+        $(window).on('resize', resize);
+
+        // Call function on sidebar width change
+        $('.sidebar-control').on('click', resize);
+
+        // Resize function
+        // 
+        // Since D3 doesn't support SVG resize by default,
+        // we need to manually specify parts of the graph that need to 
+        // be updated on window resize
+        function resize() {
+
+            // Layout variables
+            width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right;
+
+
+            // Layout
+            // -------------------------
+
+            // Main svg width
+            container.attr("width", width + margin.left + margin.right);
+
+            // Width of appended group
+            svg.attr("width", width + margin.left + margin.right);
+
+
+            // Axes
+            // -------------------------
+
+            // Horizontal range
+            x.range([0, width]);
+
+            // Horizontal axis
+            svg.selectAll('.d3-axis-horizontal').call(xAxis);
+
+
+            // Chart elements
+            // -------------------------
+
+            // Line path
+            svg.selectAll('.d3-line').attr("d", line);
+
+            // Crosshair
+            svg.selectAll('#transition-clip rect').attr("width", width);
+        }
+    }
+});