mdml · October 19, 2023 01:38 · Jan 8, 2014 · Jan 7, 2014 · Jan 7, 2014 · Jan 7, 2014
diff --git a/index.html b/index.html
@@ -75,17 +75,15 @@
     };
   }));
 
-  // Extract all data points (ignoring dates)
-  var dataPoints = [];
-  data.forEach(function(d){
-  	d3.keys(d).forEach(function(n){
-  		if (n != "date") dataPoints.push( d[n] * 1. );
-  	});
-  })
-
+  // Find the value of the day with highest total value
+  var maxDateVal = d3.max(data, function(d){
+    var vals = d3.keys(d).map(function(key){ return key !== "date" ? d[key] : 0 });
+    return d3.sum(vals);
+  });
+
   // Set domains for axes
   x.domain(d3.extent(data, function(d) { return d.date; }));
-  y.domain(d3.extent(dataPoints))
+  y.domain([0, maxDateVal])
 
   var browser = svg.selectAll(".browser")
       .data(browsers)

diff --git a/thumbnail.png b/thumbnail.png
diff --git a/thumbnail.png b/thumbnail.png
diff --git a/index.html b/index.html
@@ -60,7 +60,7 @@
   .append("g")
     .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
 
-d3.csv("http://cl.ly/2q2P260m2f3M/data.csv", function(error, data) {
+d3.csv("data.csv", function(error, data) {
   color.domain(d3.keys(data[0]).filter(function(key) { return key !== "date"; }));
   data.forEach(function(d) {
   	d.date = parseDate(d.date);

diff --git a/data.csv b/data.csv
@@ -0,0 +1,4 @@
+date,Kermit,piggy,Gonzo,fuzzy,hogthrob,animal,floyd,Gabriel,Beaker,scooter,statler,waldorf,slim,sam
+13-Oct-31,113.44,435.15,19.57,60.55,53.02,268.28,87.34,1.98,0,31.68,0,21.59,4.82,11.31
+13-Nov-30,109.86,506.85,18.97,58.77,388.37,131.48,85.34,1.98,0,48.50,0,21.59,4.70,11.31
+13-Dec-31,113.46,644.88,19.57,60.57,669.47,0,87.46,1.98,0,80.97,0,21.59,4.82,11.43
diff --git a/README.md b/README.md
@@ -0,0 +1 @@
+Example of stacked area charts --based off of [this gist](http://bl.ocks.org/mbostock/3885211#) --  addressing this [SO question](http://stackoverflow.com/questions/20973599/novice-d3-stacked-area-graph).
diff --git a/index.html b/index.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<style>
+
+body {
+  font: 10px sans-serif;
+}
+
+.axis path,
+.axis line {
+  fill: none;
+  stroke: #000;
+  shape-rendering: crispEdges;
+}
+
+.browser text {
+  text-anchor: end;
+}
+
+</style>
+<body>
+<script src="http://d3js.org/d3.v3.js"></script>
+<script>
+
+var margin = {top: 20, right: 20, bottom: 30, left: 50},
+    width = 960 - margin.left - margin.right,
+    height = 500 - margin.top - margin.bottom;
+
+var parseDate = d3.time.format("%y-%b-%d").parse;
+    //formatPercent = d3.format(".0%");
+
+var x = d3.time.scale()
+    .range([0, width]);
+
+var y = d3.scale.linear()
+    .range([height, 0]);
+
+var color = d3.scale.category20();
+
+var xAxis = d3.svg.axis()
+    .scale(x)
+    .orient("bottom");
+
+var yAxis = d3.svg.axis()
+    .scale(y)
+    .orient("left")
+    //.tickFormat(formatPercent);
+
+var area = d3.svg.area()
+    .x(function(d) { return x(d.date); })
+    .y0(function(d) { return y(d.y0); })
+    .y1(function(d) { return y(d.y0 + d.y); });
+
+var stack = d3.layout.stack()
+    .values(function(d) { return d.values; });
+
+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 + ")");
+
+d3.csv("http://cl.ly/2q2P260m2f3M/data.csv", function(error, data) {
+  color.domain(d3.keys(data[0]).filter(function(key) { return key !== "date"; }));
+  data.forEach(function(d) {
+  	d.date = parseDate(d.date);
+  });
+
+  var browsers = stack(color.domain().map(function(name) {
+    return {
+      name: name,
+      values: data.map(function(d) {
+        return {date: d.date, y: d[name] * 1};
+      })
+    };
+  }));
+
+  // Extract all data points (ignoring dates)
+  var dataPoints = [];
+  data.forEach(function(d){
+  	d3.keys(d).forEach(function(n){
+  		if (n != "date") dataPoints.push( d[n] * 1. );
+  	});
+  })
+
+  // Set domains for axes
+  x.domain(d3.extent(data, function(d) { return d.date; }));
+  y.domain(d3.extent(dataPoints))
+
+  var browser = svg.selectAll(".browser")
+      .data(browsers)
+    .enter().append("g")
+      .attr("class", "browser");
+
+  browser.append("path")
+      .attr("class", "area")
+      .attr("d", function(d) { return area(d.values); })
+      .style("fill", function(d) { return color(d.name); });
+
+  browser.append("text")
+      .datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; })
+      .attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y0 + d.value.y / 2) + ")"; })
+      .attr("x", -6)
+      .attr("dy", ".35em")
+      .text(function(d) { return d.name; });
+
+  svg.append("g")
+      .attr("class", "x axis")
+      .attr("transform", "translate(0," + height + ")")
+      .call(xAxis);
+
+  svg.append("g")
+      .attr("class", "y axis")
+      .call(yAxis);
+});
+
+</script>
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Example of stacked area charts --based off of [this gist](http://bl.ocks.org/mbostock/3885211#) -- addressing this [SO question](http://stackoverflow.com/questions/20973599/novice-d3-stacked-area-graph).