Skip to content

Instantly share code, notes, and snippets.

@almccon

almccon/.block

Last active March 25, 2018 23:58
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save almccon/fe3bc0328b0ed0b0e1fcdfc09b63b9af to your computer and use it in GitHub Desktop.
Save almccon/fe3bc0328b0ed0b0e1fcdfc09b63b9af to your computer and use it in GitHub Desktop.
Download ZIP
tornados
Raw
.block
license: gpl-3.0
Raw
README.md
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
path {
fill: #ccc;
stroke: #fff;
stroke-width: .5px;
}
path:hover {
fill: #ddd;
}
</style>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script src="https://d3js.org/d3-interpolate.v0.9.min.js"></script>
<script src="https://d3js.org/d3-color.v0.5.min.js"></script>
<script src="https://d3js.org/d3-scale-chromatic.v0.3.min.js"></script>
<script>
var width = 960,
height = 500;
var projection = d3.geoAlbersUsa()
var path = d3.geoPath(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var url = "https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/us.json"
var tornado_url = "https://gist.githubusercontent.com/almccon/fe3bc0328b0ed0b0e1fcdfc09b63b9af/raw/7eab26fee34977c42cb39bb951f2e19572153dff/tornado_1.geojson";
d3.json(url, function(error, topology) {
d3.json(tornado_url, function(error, tornados) {
if (error) throw error;
console.log("topojson", topology)
var geojson = topojson.feature(topology, topology.objects.states);
console.log("geojson", geojson)
svg.append("g").selectAll("path")
.data(geojson.features)
.enter().append("path")
.attr("d", path);
console.log("tornados", tornados);
var colorScale = d3.scaleSequential(d3.interpolateRdYlBu);
var yearScale = d3.scaleLinear()
.domain([1950,2018])
.range([0,1])
svg.append("g").selectAll("path")
.data(tornados.features)
.enter()
.filter(function(d) {
return (d.properties.mag > 1);
})
.append("path")
.attr("opacity",0.0001)
.transition()
.delay(function(d){
return 5000*yearScale(+d.properties.yr);
})
.attr("d", path)
.style("stroke", function(d) {
return colorScale(yearScale(+d.properties.yr));
})
.transition().duration(1000)
.attr("opacity",1)
.transition()
.delay(function(d){
return 4000;
})
.filter(function(d){ return +d.properties.yr < 2000;})
.transition().duration(1000)
.attr("opacity",0.0001)
.style("display","none")
});
});
</script>
Display the source blob
Display the rendered blob
Raw
tornado_1.geojson
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment