michellechandra/README.md

## README.md

      
    Raw
  

              README.md
            
          
    My first D3 map showing my travel across the US. This visualization was built by modifying choropleth example code by Scott Murray, tooltip example code by Malcolm Maclean, and legend code example by Mike Bostock.

  
## cities-lived.csv

          
            years
            place
            lat
            lon

            
              2
              New York City
              40.71455
              -74.007124

            
              6
              San Francisco
              37.7771187
              -122.4196396

            
              8
              Santa Cruz
              36.9740181
              -122.0309525

            
              3
              Santa Barbara
              34.4193802
              -119.6990509

            
              10
              Tucson
              32.22155
              -110.9697571

            
              1
              Washington DC
              38.8903694
              -77.0319595

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<script src="http://d3js.org/d3.v3.min.js"></script>
<style type="text/css">

/* On mouse hover, lighten state color */
path:hover {
	fill-opacity: .7;
}

/* Style for Custom Tooltip */
div.tooltip {
 	position: absolute;
	text-align: center;
	width: 60px;
	height: 28px;
	padding: 2px;
	font: 12px sans-serif;
	background: white;
	border: 0px;
	border-radius: 8px;
	pointer-events: none;
}

/* Legend Font Style */
body {
	font: 11px sans-serif;
}

/* Legend Position Style */
.legend {
	position:absolute;
	left:800px;
	top:350px;
}

</style>
</head>
<body>
<script type="text/javascript">

/*  This visualization was made possible by modifying code provided by:

Scott Murray, Choropleth example from "Interactive Data Visualization for the Web"
https://github.com/alignedleft/d3-book/blob/master/chapter_12/05_choropleth.html

Malcolm Maclean, tooltips example tutorial
http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html

Mike Bostock, Pie Chart Legend
http://bl.ocks.org/mbostock/3888852  */


//Width and height of map
var width = 960;
var height = 500;

// D3 Projection
var projection = d3.geo.albersUsa()
				   .translate([width/2, height/2])    // translate to center of screen
				   .scale([1000]);          // scale things down so see entire US

// Define path generator
var path = d3.geo.path()               // path generator that will convert GeoJSON to SVG paths
		  	 .projection(projection);  // tell path generator to use albersUsa projection


// Define linear scale for output
var color = d3.scale.linear()
			  .range(["rgb(213,222,217)","rgb(69,173,168)","rgb(84,36,55)","rgb(217,91,67)"]);

var legendText = ["Cities Lived", "States Lived", "States Visited", "Nada"];

//Create SVG element and append map to the SVG
var svg = d3.select("body")
			.append("svg")
			.attr("width", width)
			.attr("height", height);

// Append Div for tooltip to SVG
var div = d3.select("body")
		    .append("div")
    		.attr("class", "tooltip")
    		.style("opacity", 0);

// Load in my states data!
d3.csv("stateslived.csv", function(data) {
color.domain([0,1,2,3]); // setting the range of the input data

// Load GeoJSON data and merge with states data
d3.json("us-states.json", function(json) {

// Loop through each state data value in the .csv file
for (var i = 0; i < data.length; i++) {

	// Grab State Name
	var dataState = data[i].state;

	// Grab data value
	var dataValue = data[i].visited;

	// Find the corresponding state inside the GeoJSON
	for (var j = 0; j < json.features.length; j++)  {
		var jsonState = json.features[j].properties.name;

		if (dataState == jsonState) {

		// Copy the data value into the JSON
		json.features[j].properties.visited = dataValue;

		// Stop looking through the JSON
		break;
		}
	}
}

// Bind the data to the SVG and create one path per GeoJSON feature
svg.selectAll("path")
	.data(json.features)
	.enter()
	.append("path")
	.attr("d", path)
	.style("stroke", "#fff")
	.style("stroke-width", "1")
	.style("fill", function(d) {

	// Get data value
	var value = d.properties.visited;

	if (value) {
	//If value exists…
	return color(value);
	} else {
	//If value is undefined…
	return "rgb(213,222,217)";
	}
});


// Map the cities I have lived in!
d3.csv("cities-lived.csv", function(data) {

svg.selectAll("circle")
	.data(data)
	.enter()
	.append("circle")
	.attr("cx", function(d) {
		return projection([d.lon, d.lat])[0];
	})
	.attr("cy", function(d) {
		return projection([d.lon, d.lat])[1];
	})
	.attr("r", function(d) {
		return Math.sqrt(d.years) * 4;
	})
		.style("fill", "rgb(217,91,67)")
		.style("opacity", 0.85)

	// Modification of custom tooltip code provided by Malcolm Maclean, "D3 Tips and Tricks"
	// http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html
	.on("mouseover", function(d) {
    	div.transition()
      	   .duration(200)
           .style("opacity", .9);
           div.text(d.place)
           .style("left", (d3.event.pageX) + "px")
           .style("top", (d3.event.pageY - 28) + "px");
	})

    // fade out tooltip on mouse out
    .on("mouseout", function(d) {
        div.transition()
           .duration(500)
           .style("opacity", 0);
    });
});

// Modified Legend Code from Mike Bostock: http://bl.ocks.org/mbostock/3888852
var legend = d3.select("body").append("svg")
      			.attr("class", "legend")
     			.attr("width", 140)
    			.attr("height", 200)
   				.selectAll("g")
   				.data(color.domain().slice().reverse())
   				.enter()
   				.append("g")
     			.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });

  	legend.append("rect")
   		  .attr("width", 18)
   		  .attr("height", 18)
   		  .style("fill", color);

  	legend.append("text")
  		  .data(legendText)
      	  .attr("x", 24)
      	  .attr("y", 9)
      	  .attr("dy", ".35em")
      	  .text(function(d) { return d; });
	});

});
</script>
</body>
</html>

## stateslived.csv

          
            state
            visited

            
              Alabama
              0

            
              Alaska
              0

            
              Arkansas
              0

            
              Arizona
              2

            
              California
              2

            
              Colorado
              1

            
              Connecticut
              1

            
              Delaware
              0

            
              Florida
              0

            
              Georgia
              0

            
              Hawaii
              0

            
              Iowa
              0

            
              Idaho
              1

            
              Illinois
              1

            
              Indiana
              0

            
              Kansas
              0

            
              Kentucky
              0

            
              Louisiana
              0

            
              Maine
              1

            
              Maryland
              1

            
              Massachusetts
              1

            
              Michigan
              0

            
              Minnesota
              1

            
              Missouri
              0

            
              Mississippi
              0

            
              Montana
              1

            
              North Carolina
              0

            
              North Dakota
              0

            
              Nebraska
              0

            
              New Hampshire
              1

            
              New Jersey
              0

            
              New Mexico
              1

            
              Nevada
              1

            
              New York
              2

            
              Ohio
              1

            
              Oklahoma
              0

            
              Oregon
              1

            
              Pennsylvania
              1

            
              Rhode Island
              1

            
              South Carolina
              0

            
              South Dakota
              0

            
              Tennessee
              0

            
              Texas
              0

            
              Utah
              1

            
              Virginia
              0

            
              Vermont
              0

            
              Washington
              1

            
              Wisconsin
              0

            
              West Virginia
              0

            
              Wyoming
              1

## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## us-states.json

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              us-states.json
            
          
        Loading

      Sorry, something went wrong. Reload?
      Sorry, we cannot display this file.
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          Viewer requires iframe.
years	place	lat	lon
2	New York City	40.71455	-74.007124
6	San Francisco	37.7771187	-122.4196396
8	Santa Cruz	36.9740181	-122.0309525
3	Santa Barbara	34.4193802	-119.6990509
10	Tucson	32.22155	-110.9697571
1	Washington DC	38.8903694	-77.0319595
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<style type="text/css">

	/* On mouse hover, lighten state color */
	path:hover {
	fill-opacity: .7;
	}

	/* Style for Custom Tooltip */
	div.tooltip {
	position: absolute;
	text-align: center;
	width: 60px;
	height: 28px;
	padding: 2px;
	font: 12px sans-serif;
	background: white;
	border: 0px;
	border-radius: 8px;
	pointer-events: none;
	}

	/* Legend Font Style */
	body {
	font: 11px sans-serif;
	}

	/* Legend Position Style */
	.legend {
	position:absolute;
	left:800px;
	top:350px;
	}

	</style>
	</head>
	<body>
	<script type="text/javascript">

	/* This visualization was made possible by modifying code provided by:

	Scott Murray, Choropleth example from "Interactive Data Visualization for the Web"
	https://github.com/alignedleft/d3-book/blob/master/chapter_12/05_choropleth.html

	Malcolm Maclean, tooltips example tutorial
	http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html

	Mike Bostock, Pie Chart Legend
	http://bl.ocks.org/mbostock/3888852 */


	//Width and height of map
	var width = 960;
	var height = 500;

	// D3 Projection
	var projection = d3.geo.albersUsa()
	.translate([width/2, height/2]) // translate to center of screen
	.scale([1000]); // scale things down so see entire US

	// Define path generator
	var path = d3.geo.path() // path generator that will convert GeoJSON to SVG paths
	.projection(projection); // tell path generator to use albersUsa projection


	// Define linear scale for output
	var color = d3.scale.linear()
	.range(["rgb(213,222,217)","rgb(69,173,168)","rgb(84,36,55)","rgb(217,91,67)"]);

	var legendText = ["Cities Lived", "States Lived", "States Visited", "Nada"];

	//Create SVG element and append map to the SVG
	var svg = d3.select("body")
	.append("svg")
	.attr("width", width)
	.attr("height", height);

	// Append Div for tooltip to SVG
	var div = d3.select("body")
	.append("div")
	.attr("class", "tooltip")
	.style("opacity", 0);

	// Load in my states data!
	d3.csv("stateslived.csv", function(data) {
	color.domain([0,1,2,3]); // setting the range of the input data

	// Load GeoJSON data and merge with states data
	d3.json("us-states.json", function(json) {

	// Loop through each state data value in the .csv file
	for (var i = 0; i < data.length; i++) {

	// Grab State Name
	var dataState = data[i].state;

	// Grab data value
	var dataValue = data[i].visited;

	// Find the corresponding state inside the GeoJSON
	for (var j = 0; j < json.features.length; j++) {
	var jsonState = json.features[j].properties.name;

	if (dataState == jsonState) {

	// Copy the data value into the JSON
	json.features[j].properties.visited = dataValue;

	// Stop looking through the JSON
	break;
	}
	}
	}

	// Bind the data to the SVG and create one path per GeoJSON feature
	svg.selectAll("path")
	.data(json.features)
	.enter()
	.append("path")
	.attr("d", path)
	.style("stroke", "#fff")
	.style("stroke-width", "1")
	.style("fill", function(d) {

	// Get data value
	var value = d.properties.visited;

	if (value) {
	//If value exists…
	return color(value);
	} else {
	//If value is undefined…
	return "rgb(213,222,217)";
	}
	});


	// Map the cities I have lived in!
	d3.csv("cities-lived.csv", function(data) {

	svg.selectAll("circle")
	.data(data)
	.enter()
	.append("circle")
	.attr("cx", function(d) {
	return projection([d.lon, d.lat])[0];
	})
	.attr("cy", function(d) {
	return projection([d.lon, d.lat])[1];
	})
	.attr("r", function(d) {
	return Math.sqrt(d.years) * 4;
	})
	.style("fill", "rgb(217,91,67)")
	.style("opacity", 0.85)

	// Modification of custom tooltip code provided by Malcolm Maclean, "D3 Tips and Tricks"
	// http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html
	.on("mouseover", function(d) {
	div.transition()
	.duration(200)
	.style("opacity", .9);
	div.text(d.place)
	.style("left", (d3.event.pageX) + "px")
	.style("top", (d3.event.pageY - 28) + "px");
	})

	// fade out tooltip on mouse out
	.on("mouseout", function(d) {
	div.transition()
	.duration(500)
	.style("opacity", 0);
	});
	});

	// Modified Legend Code from Mike Bostock: http://bl.ocks.org/mbostock/3888852
	var legend = d3.select("body").append("svg")
	.attr("class", "legend")
	.attr("width", 140)
	.attr("height", 200)
	.selectAll("g")
	.data(color.domain().slice().reverse())
	.enter()
	.append("g")
	.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });

	legend.append("rect")
	.attr("width", 18)
	.attr("height", 18)
	.style("fill", color);

	legend.append("text")
	.data(legendText)
	.attr("x", 24)
	.attr("y", 9)
	.attr("dy", ".35em")
	.text(function(d) { return d; });
	});

	});
	</script>
	</body>
	</html>
	state	visited
	Alabama	0
	Alaska	0
	Arkansas	0
	Arizona	2
	California	2
	Colorado	1
	Connecticut	1
	Delaware	0
	Florida	0
	Georgia	0
	Hawaii	0
	Iowa	0
	Idaho	1
	Illinois	1
	Indiana	0
	Kansas	0
	Kentucky	0
	Louisiana	0
	Maine	1
	Maryland	1
	Massachusetts	1
	Michigan	0
	Minnesota	1
	Missouri	0
	Mississippi	0
	Montana	1
	North Carolina	0
	North Dakota	0
	Nebraska	0
	New Hampshire	1
	New Jersey	0
	New Mexico	1
	Nevada	1
	New York	2
	Ohio	1
	Oklahoma	0
	Oregon	1
	Pennsylvania	1
	Rhode Island	1
	South Carolina	0
	South Dakota	0
	Tennessee	0
	Texas	0
	Utah	1
	Virginia	0
	Vermont	0
	Washington	1
	Wisconsin	0
	West Virginia	0
	Wyoming	1