TheMapSmith · May 6, 2020 18:59
diff --git a/data.csv b/data.csv
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html lang="en">
 <head>
 	<meta charset="utf-8">
 	<title>Independent Farms by County - Choropleth</title>
 	<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
 	<script type="text/javascript" src="http://d3js.org/queue.v1.min.js"></script>
 	<script type="text/javascript" src="http://d3js.org/topojson.v1.min.js"></script> 
 </head>

 <!-- CSS -->
 <style>
 
 	path {
 	 	stroke:white;
 	 	stroke-width: 1px;
 	}
 	 
 	body {
 	 	font-family: 'Proxima Nova', sans-serif;
 	}
 	 
 	.county {
 	 	font: 14px sans-serif;
 	 	font-weight: bold;
 	}
 	 
 	.legend {
 	 	font-size: 14px;
 	 	font-family: 'Proxima Nova', sans-serif;
 	}

 	.legend_title {
 	 	font-size: 14px;
 	 	font-family: 'Proxima Nova', sans-serif;
 	 	font-weight: bold;
 	}
 	 
 	div.tooltip {
 	 	position: absolute;
 	 	left: 75px;
 	 	text-align: center;
 	 	height: 16px;
 	 	padding: 10px;
 	 	font-size: 14px;
 	 	background: #FFFFFF;
 	 	border: 1px solid #989898;
 		pointer-events: none;
 	}

 	p {
 		font-family: 'Proxima Nova', sans-serif;
 		font-size:10px;
 		margin: 20px 0 0 10px;
 	}

 	@media (max-width: 400px) {
    .d3map {
        display: none;
    }
 }
 </style>

 <body>
 	<h1>Independent Farms in the USA</h1>
 		 <script type="text/javascript">
 		 var width = 960, height = 600;
 		 var color_domain = [500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000]
 		 var ext_color_domain = [0, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000]
 		 var legend_labels = ["< 500", "500+", "1000+", "1500+", "2000+", "2500+", "3000+", "3500+", "4000+", "4500+", "5000+", "5500+", "6000+"]
 		 var color = d3.scale.threshold()
 		 
 		 .domain(color_domain)
 		 .range(["#dcdcdc", "#d0d6cd", "#bdc9be", "#aabdaf", "#97b0a0", "#84a491", "#719782", "#5e8b73", "#4b7e64", "#387255", "#256546", "#125937", "#004d28"]);
 		 
 			var div = d3.select("body").append("div")
 		 .attr("class", "tooltip")
 		 .style("opacity", 0);
 		 
 		var svg = d3.select("body").append("svg")
 		 .attr("width", width)
 		 .attr("height", height)
 		 .style("margin", "-15px auto");
 		 var path = d3.geo.path()
 		 
 		queue()
 		 .defer(d3.json, "us.json")
 		 .defer(d3.csv, "data.csv")
 		 .await(ready);
 		 
 		function ready(error, us, data) {
 		 var pairRateWithId = {};
 		 var pairNameWithId = {};

 		//Moves selction to front
 		d3.selection.prototype.moveToFront = function() {
  			return this.each(function(){
    		this.parentNode.appendChild(this);
  			});
 		}; 

 		//Moves selction to back
 		d3.selection.prototype.moveToBack = function() { 
    		return this.each(function() { 
        	var firstChild = this.parentNode.firstChild; 
        	if (firstChild) { 
            	this.parentNode.insertBefore(this, firstChild); 
        	} 
    		}); 
 		};

 		data.forEach(function(d) {
 		 pairRateWithId[d.id] = +d.rate;
 		 pairNameWithId[d.id] = d.name;
 		 });
 		 svg.append("g")
 		 .attr("class", "county")
 		 .selectAll("path")
 		 .data(topojson.feature(us, us.objects.counties).features)
 		 .enter().append("path")
 		 .attr("d", path)
 		 .style ( "fill" , function (d) {
 		 return color (pairRateWithId[d.id]);
 		 })
 		 .style("opacity", 0.8)
 		 .on("mouseover", function(d) {
 		 	var sel = d3.select(this);
  			sel.moveToFront();
 		 d3.select(this).transition().duration(300).style({'opacity': 1, 'stroke': 'black', 'stroke-width': 1.5});
 		 div.transition().duration(300)
 		 .style("opacity", 1)
 		 div.text(pairNameWithId[d.id] + ": " + pairRateWithId[d.id])
 		 .style("left", (d3.event.pageX) + "px")
 		 .style("top", (d3.event.pageY -30) + "px");
 		 })
 		 .on("mouseout", function() {
 		 	var sel = d3.select(this);
  			sel.moveToBack();
 		 d3.select(this)
 		 .transition().duration(300)
 		 .style({'opacity': 0.8, 'stroke': 'white', 'stroke-width': 1});
 		 div.transition().duration(300)
 		 .style("opacity", 0);
 		 })
 		 
 		 };
 		 
 		var legend = svg.selectAll("g.legend")
 		 .data(ext_color_domain)
 		 .enter().append("g")
 		 .attr("class", "legend");
 		 
 		var ls_w = 73, ls_h = 20;
 		 
 		legend.append("rect")
 		 .attr("x", function(d, i){ return width - (i*ls_w) - ls_w;})
 		 .attr("y", 550)
 		 .attr("width", ls_w)
 		 .attr("height", ls_h)
 		 .style("fill", function(d, i) { return color(d); })
 		 .style("opacity", 0.8);
 		 
 		legend.append("text")
 		 .attr("x", function(d, i){ return width - (i*ls_w) - ls_w;})
 		 .attr("y", 590)
 		 .text(function(d, i){ return legend_labels[i]; });

 		 var legend_title = "Number of independent farms";

 		 svg.append("text")
 		 .attr("x", 10)
 		 .attr("y", 540)
 		 .attr("class", "legend_title")
 		 .text(function(){return legend_title});

 		</script>

 <p>Source: U.S. Census</p>		
 </body>

 </html>
diff --git a/us.json b/us.json
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<title>Independent Farms by County - Choropleth</title>
	<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
	<script type="text/javascript" src="http://d3js.org/queue.v1.min.js"></script>
	<script type="text/javascript" src="http://d3js.org/topojson.v1.min.js"></script>
	</head>

	<!-- CSS -->
	<style>

	path {
	stroke:white;
	stroke-width: 1px;
	}

	body {
	font-family: 'Proxima Nova', sans-serif;
	}

	.county {
	font: 14px sans-serif;
	font-weight: bold;
	}

	.legend {
	font-size: 14px;
	font-family: 'Proxima Nova', sans-serif;
	}

	.legend_title {
	font-size: 14px;
	font-family: 'Proxima Nova', sans-serif;
	font-weight: bold;
	}

	div.tooltip {
	position: absolute;
	left: 75px;
	text-align: center;
	height: 16px;
	padding: 10px;
	font-size: 14px;
	background: #FFFFFF;
	border: 1px solid #989898;
	pointer-events: none;
	}

	p {
	font-family: 'Proxima Nova', sans-serif;
	font-size:10px;
	margin: 20px 0 0 10px;
	}

	@media (max-width: 400px) {
	.d3map {
	display: none;
	}
	}
	</style>

	<body>
	<h1>Independent Farms in the USA</h1>
	<script type="text/javascript">
	var width = 960, height = 600;
	var color_domain = [500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000]
	var ext_color_domain = [0, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000]
	var legend_labels = ["< 500", "500+", "1000+", "1500+", "2000+", "2500+", "3000+", "3500+", "4000+", "4500+", "5000+", "5500+", "6000+"]
	var color = d3.scale.threshold()

	.domain(color_domain)
	.range(["#dcdcdc", "#d0d6cd", "#bdc9be", "#aabdaf", "#97b0a0", "#84a491", "#719782", "#5e8b73", "#4b7e64", "#387255", "#256546", "#125937", "#004d28"]);

	var div = d3.select("body").append("div")
	.attr("class", "tooltip")
	.style("opacity", 0);

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
	.style("margin", "-15px auto");
	var path = d3.geo.path()

	queue()
	.defer(d3.json, "us.json")
	.defer(d3.csv, "data.csv")
	.await(ready);

	function ready(error, us, data) {
	var pairRateWithId = {};
	var pairNameWithId = {};

	//Moves selction to front
	d3.selection.prototype.moveToFront = function() {
	return this.each(function(){
	this.parentNode.appendChild(this);
	});
	};

	//Moves selction to back
	d3.selection.prototype.moveToBack = function() {
	return this.each(function() {
	var firstChild = this.parentNode.firstChild;
	if (firstChild) {
	this.parentNode.insertBefore(this, firstChild);
	}
	});
	};

	data.forEach(function(d) {
	pairRateWithId[d.id] = +d.rate;
	pairNameWithId[d.id] = d.name;
	});
	svg.append("g")
	.attr("class", "county")
	.selectAll("path")
	.data(topojson.feature(us, us.objects.counties).features)
	.enter().append("path")
	.attr("d", path)
	.style ( "fill" , function (d) {
	return color (pairRateWithId[d.id]);
	})
	.style("opacity", 0.8)
	.on("mouseover", function(d) {
	var sel = d3.select(this);
	sel.moveToFront();
	d3.select(this).transition().duration(300).style({'opacity': 1, 'stroke': 'black', 'stroke-width': 1.5});
	div.transition().duration(300)
	.style("opacity", 1)
	div.text(pairNameWithId[d.id] + ": " + pairRateWithId[d.id])
	.style("left", (d3.event.pageX) + "px")
	.style("top", (d3.event.pageY -30) + "px");
	})
	.on("mouseout", function() {
	var sel = d3.select(this);
	sel.moveToBack();
	d3.select(this)
	.transition().duration(300)
	.style({'opacity': 0.8, 'stroke': 'white', 'stroke-width': 1});
	div.transition().duration(300)
	.style("opacity", 0);
	})

	};

	var legend = svg.selectAll("g.legend")
	.data(ext_color_domain)
	.enter().append("g")
	.attr("class", "legend");

	var ls_w = 73, ls_h = 20;

	legend.append("rect")
	.attr("x", function(d, i){ return width - (i*ls_w) - ls_w;})
	.attr("y", 550)
	.attr("width", ls_w)
	.attr("height", ls_h)
	.style("fill", function(d, i) { return color(d); })
	.style("opacity", 0.8);

	legend.append("text")
	.attr("x", function(d, i){ return width - (i*ls_w) - ls_w;})
	.attr("y", 590)
	.text(function(d, i){ return legend_labels[i]; });

	var legend_title = "Number of independent farms";

	svg.append("text")
	.attr("x", 10)
	.attr("y", 540)
	.attr("class", "legend_title")
	.text(function(){return legend_title});

	</script>

	<p>Source: U.S. Census</p>
	</body>

	</html>
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