Skip to content

Instantly share code, notes, and snippets.

@hadley

hadley/index.html

Created July 6, 2012 00:26
Show Gist options
  • Save hadley/3057298 to your computer and use it in GitHub Desktop.
Save hadley/3057298 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style></style>
<body>
<script src="http://d3js.org/d3.v2.js?2.9.6"></script>
<script src="http://coffeescript.org/extras/coffee-script.js"></script>
<script src="vis.coffee" type="text/coffeescript"></script>
<svg width="400" height="400" id="chart"></svg>
Raw
mtcars.json
[{"mpg":21,"cyl":6,"disp":160,"hp":110,"drat":3.9,"wt":2.62,"qsec":16.46,"vs":0,"am":1,"gear":4,"carb":4},{"mpg":21,"cyl":6,"disp":160,"hp":110,"drat":3.9,"wt":2.875,"qsec":17.02,"vs":0,"am":1,"gear":4,"carb":4},{"mpg":22.8,"cyl":4,"disp":108,"hp":93,"drat":3.85,"wt":2.32,"qsec":18.61,"vs":1,"am":1,"gear":4,"carb":1},{"mpg":21.4,"cyl":6,"disp":258,"hp":110,"drat":3.08,"wt":3.215,"qsec":19.44,"vs":1,"am":0,"gear":3,"carb":1},{"mpg":18.7,"cyl":8,"disp":360,"hp":175,"drat":3.15,"wt":3.44,"qsec":17.02,"vs":0,"am":0,"gear":3,"carb":2},{"mpg":18.1,"cyl":6,"disp":225,"hp":105,"drat":2.76,"wt":3.46,"qsec":20.22,"vs":1,"am":0,"gear":3,"carb":1},{"mpg":14.3,"cyl":8,"disp":360,"hp":245,"drat":3.21,"wt":3.57,"qsec":15.84,"vs":0,"am":0,"gear":3,"carb":4},{"mpg":24.4,"cyl":4,"disp":146.7,"hp":62,"drat":3.69,"wt":3.19,"qsec":20,"vs":1,"am":0,"gear":4,"carb":2},{"mpg":22.8,"cyl":4,"disp":140.8,"hp":95,"drat":3.92,"wt":3.15,"qsec":22.9,"vs":1,"am":0,"gear":4,"carb":2},{"mpg":19.2,"cyl":6,"disp":167.6,"hp":123,"drat":3.92,"wt":3.44,"qsec":18.3,"vs":1,"am":0,"gear":4,"carb":4},{"mpg":17.8,"cyl":6,"disp":167.6,"hp":123,"drat":3.92,"wt":3.44,"qsec":18.9,"vs":1,"am":0,"gear":4,"carb":4},{"mpg":16.4,"cyl":8,"disp":275.8,"hp":180,"drat":3.07,"wt":4.07,"qsec":17.4,"vs":0,"am":0,"gear":3,"carb":3},{"mpg":17.3,"cyl":8,"disp":275.8,"hp":180,"drat":3.07,"wt":3.73,"qsec":17.6,"vs":0,"am":0,"gear":3,"carb":3},{"mpg":15.2,"cyl":8,"disp":275.8,"hp":180,"drat":3.07,"wt":3.78,"qsec":18,"vs":0,"am":0,"gear":3,"carb":3},{"mpg":10.4,"cyl":8,"disp":472,"hp":205,"drat":2.93,"wt":5.25,"qsec":17.98,"vs":0,"am":0,"gear":3,"carb":4},{"mpg":10.4,"cyl":8,"disp":460,"hp":215,"drat":3,"wt":5.424,"qsec":17.82,"vs":0,"am":0,"gear":3,"carb":4},{"mpg":14.7,"cyl":8,"disp":440,"hp":230,"drat":3.23,"wt":5.345,"qsec":17.42,"vs":0,"am":0,"gear":3,"carb":4},{"mpg":32.4,"cyl":4,"disp":78.7,"hp":66,"drat":4.08,"wt":2.2,"qsec":19.47,"vs":1,"am":1,"gear":4,"carb":1},{"mpg":30.4,"cyl":4,"disp":75.7,"hp":52,"drat":4.93,"wt":1.615,"qsec":18.52,"vs":1,"am":1,"gear":4,"carb":2},{"mpg":33.9,"cyl":4,"disp":71.1,"hp":65,"drat":4.22,"wt":1.835,"qsec":19.9,"vs":1,"am":1,"gear":4,"carb":1},{"mpg":21.5,"cyl":4,"disp":120.1,"hp":97,"drat":3.7,"wt":2.465,"qsec":20.01,"vs":1,"am":0,"gear":3,"carb":1},{"mpg":15.5,"cyl":8,"disp":318,"hp":150,"drat":2.76,"wt":3.52,"qsec":16.87,"vs":0,"am":0,"gear":3,"carb":2},{"mpg":15.2,"cyl":8,"disp":304,"hp":150,"drat":3.15,"wt":3.435,"qsec":17.3,"vs":0,"am":0,"gear":3,"carb":2},{"mpg":13.3,"cyl":8,"disp":350,"hp":245,"drat":3.73,"wt":3.84,"qsec":15.41,"vs":0,"am":0,"gear":3,"carb":4},{"mpg":19.2,"cyl":8,"disp":400,"hp":175,"drat":3.08,"wt":3.845,"qsec":17.05,"vs":0,"am":0,"gear":3,"carb":2},{"mpg":27.3,"cyl":4,"disp":79,"hp":66,"drat":4.08,"wt":1.935,"qsec":18.9,"vs":1,"am":1,"gear":4,"carb":1},{"mpg":26,"cyl":4,"disp":120.3,"hp":91,"drat":4.43,"wt":2.14,"qsec":16.7,"vs":0,"am":1,"gear":5,"carb":2},{"mpg":30.4,"cyl":4,"disp":95.1,"hp":113,"drat":3.77,"wt":1.513,"qsec":16.9,"vs":1,"am":1,"gear":5,"carb":2},{"mpg":15.8,"cyl":8,"disp":351,"hp":264,"drat":4.22,"wt":3.17,"qsec":14.5,"vs":0,"am":1,"gear":5,"carb":4},{"mpg":19.7,"cyl":6,"disp":145,"hp":175,"drat":3.62,"wt":2.77,"qsec":15.5,"vs":0,"am":1,"gear":5,"carb":6},{"mpg":15,"cyl":8,"disp":301,"hp":335,"drat":3.54,"wt":3.57,"qsec":14.6,"vs":0,"am":1,"gear":5,"carb":8},{"mpg":21.4,"cyl":4,"disp":121,"hp":109,"drat":4.11,"wt":2.78,"qsec":18.6,"vs":1,"am":1,"gear":4,"carb":2}]
Raw
vis.coffee
# Plot dimensions and margins -----------------------------------------------
margin = {top: 10, right: 10, bottom: 10, left: 10}
svg = d3.select("#chart")
width = parseFloat(svg.attr("width")) - margin.left - margin.right
height = parseFloat(svg.attr("height")) - margin.top - margin.bottom
svg = svg
.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")")
# Scales and mappings -------------------------------------------------------
# Would be more flexible to make these functions - then you could
# display computed variables more easily.
mapping = {
x: "disp"
y: "mpg"
r: "cyl"
}
scales = {
x: d3.scale.linear().range([0, width])
y: d3.scale.linear().range([height, 0])
r: d3.scale.sqrt().range([4, 8])
}
train_scale = (data, attr) ->
scales[attr].domain d3.extent(data, (d) -> d[mapping[attr]])
train_scales = (data) ->
for attr, variable of mapping
train_scale(data, attr)
map_scale = (attr) ->
(d) -> scales[attr] d[mapping[attr]]
# Render data ----------------------------------------------------------------
d3.json "mtcars.json", (data) ->
train_scales data
svg.append("g").selectAll(".grid_y")
.data(scales.x.ticks(10))
.enter()
.append("line")
.attr("class", ["grid", "y"])
.attr("y1", scales.y.range()[0])
.attr("y2", scales.y.range()[1])
.attr("x1", scales.x)
.attr("x2", scales.x)
.attr("stroke", "#ccc")
svg.append("g").selectAll(".grid_y")
.data(scales.y.ticks(10))
.enter()
.append("line")
.attr("class", ["grid", "y"])
.attr("x1", scales.x.range()[0])
.attr("x2", scales.x.range()[1])
.attr("y1", scales.y)
.attr("y2", scales.y)
.attr("stroke", "#ccc")
svg.append("g").selectAll(".point")
.data(data)
.enter()
.append("circle")
.attr("class", "point")
.attr("cx", map_scale "x")
.attr("cy", map_scale "y")
.attr("r", map_scale "r")
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment