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Slope Chart
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README.md

Slope Chart

  • a very simple slope chart
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
#container {
width: 800px;
margin: 25px auto 25px auto;
padding: 50px 50px 50px 50px;
background-color: white;
}
.chartContainer {
display: inline-block;
width: 99%;
}
body {
margin:0;position:fixed;top:0;right:0;bottom:0;left:0;
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-size: 20px;
font-style: bold;
}
h1 {
margin-bottom: 25px;
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-size: 28px;
font-style: bold;
}
svg {
background-color: white;
}
.axis path,
.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
circle {
stroke-width: 4;
fill: white;
}
circle.special {
stroke: white;
stroke-width: 3;
fill: white;
}
.axis path,
.axis line {
fill: none;
stroke: black;
stroke-width: 2;
shape-rendering: crispEdges;
}
.axis text {
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-size: 18px;
font-style: bold;
}
</style>
</head>
<body>
<div id="container">
<h1>Slope Chart</h1>
<div class="chartContainer" id="slopeChartContainer">
</div>
</div>
<script type="text/javascript">
//Width and height
var w = 400;
var h = 600;
var padding = 40;
//data
var dataset = [{"first":3.1,"second":5,"group":"up","delta":-1.9},{"first":5.3,"second":6,"group":"up","delta":-0.7},{"first":1.7,"second":3.2,"group":"up","delta":-1.5},{"first":3.3,"second":7.3,"group":"up","delta":-4},{"first":2.4,"second":5.4,"group":"up","delta":-3},{"first":3.6,"second":8.5,"group":"up","delta":-4.9},{"first":4.3,"second":9.1,"group":"up","delta":-4.8},{"first":1.1,"second":11.1,"group":"up","delta":-10},{"first":5.2,"second":15.7,"group":"up","delta":-10.5},{"first":4.9,"second":4.5,"group":"down","delta":0.4},{"first":7,"second":2.6,"group":"down","delta":4.4},{"first":3,"second":1.2,"group":"down","delta":1.8}] ;
// Calculate differences between first and second y values.
var diffs = []; // store their names within a local array
for(var i = 0; i < dataset.length; i++){
diffs.push(dataset[i].first - dataset[i].second);
}
//Find max values & Create scale functions
var xMax = d3.max(dataset, function(d) { return d.first; })
var yMax = d3.max(dataset, function(d) { return d.second; })
var max = Math.max(yMax, xMax); // highest value in dataset
var yScale = d3.scale.linear()
.domain([0, max])
.range([h - padding, padding])
.nice()
;
var rad = 6 // radius of circle
var radback = rad * 1.3
//Configure y axis
var yAxis = d3.svg.axis()
.scale(yScale)
.orient("left")
.ticks(6)
;
//Create SVG element
var svg = d3.select("#slopeChartContainer")
.append("svg")
.attr("width", w)
.attr("height", h);
//
// join paths
svg.append("g")
.attr("id", "lines")
.selectAll("line")
.data(dataset)
.enter()
.append("line")
.style("opacity", 0)
.attr("x1", (w/4))
.attr("x2", (w/4))
.attr("y1", function(d) {return yScale(d.first)})
.attr("y2", function(d) {return yScale(d.first)})
.transition()
.duration(5000)
.attr("x1", (w/4))
.attr("x2", (w/1.4))
.attr("y1", function(d) {return yScale(d.first)})
.attr("y2", function(d) {return yScale(d.second)})
.attr("stroke", function(d) {
if (d.delta <= -10) {return "#000c60";}
else if (d.delta >=0) {return "#569ffe";}
else {return "#001bea";}
})
.style("stroke-width", 4)
.style("stroke-linecap", "butt")
.style("opacity", 1)
;
//Create first background circles
svg.append("g")
.attr("id", "circles1b")
.selectAll("circle")
.data(dataset)
.enter()
.append("circle")
.attr("class", "special")
.attr("r", radback)
.attr("cx", (w/4))
.attr("cy", function(d) {return yScale(d.first)})
;
//Create first circles
svg.append("g")
.attr("id", "circles1")
.selectAll("circle")
.data(dataset)
.enter()
.append("circle")
.attr("r", rad)
.attr("cx", (w/4))
.attr("cy", function(d) {return yScale(d.first)})
.attr("stroke", function(d) {
if (d.delta <= -10) {return "#000c60";}
else if (d.delta >=0) {return "#569ffe";}
else {return "#001bea";}
})
.style("opacity", 1)
;
//Create second background circles
svg.append("g")
.attr("id", "circles2b")
.selectAll("circle")
.data(dataset)
.enter()
.append("circle")
.attr("class", "special")
.attr("r", radback)
.attr("cx", (w/1.4))
.attr("cy", function(d) {return yScale(d.second)})
;
//Create second circles
svg.append("g")
.attr("id", "circles2")
.selectAll("circle")
.data(dataset)
.enter()
.append("circle")
.style("opacity", 0)
.transition()
.delay(3500)
.duration(2500)
.attr("r", rad)
.attr("cx", (w/1.4))
.attr("cy", function(d) {return yScale(d.second)})
.attr("stroke", function(d) {
if (d.delta <= -10) {return "#000c60";}
else if (d.delta >=0) {return "#569ffe";}
else {return "#001bea";}
})
.style("opacity", 1)
;
// First text
svg.append("text")
.attr("x", (w/4))
.attr("y", h-(padding/2))
.style("text-anchor","middle")
.text("First");
// Second text
svg.append("text")
.attr("x", (w/1.4))
.attr("y", h-(padding/2))
.style("text-anchor","middle")
.text("Second");
//Create y axis
svg.append("g")
.attr("class", "axis")
.attr("transform", "translate(" + (padding*1.5) + ",0)")
.call(yAxis);
// Add the text label for the Y axis
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", (padding/100))
.attr("x",0 - (h / 2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Arbitrary Units");
// color by gradient?, delta?
</script>
</body>
</html>
Raw
myarrows.txt
x1x1,x2x2,y1y1,y2y2,starttype,endtype,op
10,27,53,32,circle,circle,1
110,141,132,123,none,arrow,0
200,246,422,444,circle,square,1
400,376,311,335,circle,stub,1
322,300,34,16,circle,arrow,1
312,345,333,453,none,stub,0
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