dbetebenner/.block

## .block
license:gpl-3.0
height:600
border:no

## README.md

      
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              README.md
            
          
    D3 Block-a-Day: Day 8, January, 8th 2017

New Year's Resolution for 2017: Make a D3 Block a day to teach myself D3. This is Number 8. This example
builds on yesterday's Wyoming school district map adding tooltips that identify the district.
The topoJSON files used to construct this visualization were created by me using
shape files provided by the United States Census Bureau.
The Center for Assessment makes these
state and national school district topoJSON files available
for anyone to use in their own development.

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<head>
<title>D3 Block-a-Day: Day 8, January 8, 2017</title>
<style>

#wrapper {
      width: 100vw;
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
}

path {
  fill: #ccc;
  stroke: #fff;
  stroke-width: .5px;
}

path:hover {
  fill: #879baa;
}

.hidden {
  display: none;
}

div.tooltip {
  background-color: #fff8dc;
  padding: 7px;
  text-shadow: #f5f5f5 0 1px 0;
  font: 13px Helvetica Neue;
  border: 2.5px solid;
  border-color: black;
	border-radius: 3px;
  opacity: 0.9;
  position: absolute;
  box-shadow: rgba(0, 0, 0, 0.3) 0 2px 10px;
  }
</style>
</head>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/topojson.v2.min.js"></script>
<script src="https://d3js.org/d3-array.v1.min.js"></script>
<script src="https://d3js.org/d3-geo.v1.min.js"></script>

<div id="wrapper">
   <div id="chart"></div>
</div>

<script>

  var width = 960,
    height = 500;

  const zoom = d3.zoom()
      .scaleExtent([1/4, 3])
      .on('zoom', function () {
        d3.select('g').attr('transform', d3.event.transform)
      });

  const svg = d3.select('#chart')
      .append('svg')
      .attr('width', width)
      .attr('height', height)
      .call(zoom)

  const g = svg.append('g')

  var projection = d3.geoMercator()
			.center([ -107.5534, 43.00029 ])
			.scale(5000);

  var path = d3.geoPath()
      .projection(projection);

  var tooltip = d3.select('#chart').append('div')
      .attr('class', 'hidden tooltip');

  d3.json("WY_Districts.json", function(error, state_districts) {
  	if (error) throw error;

  	g.selectAll("path")
    	  .data(topojson.feature(state_districts, state_districts.objects.districts).features)
		    .enter()
		    .append("path")
    	  .attr("d", path)
        .on('mousemove', function(d) {
           var mouse = d3.mouse(svg.node()).map(function(d) {
                return parseInt(d);
         });
         tooltip.classed('hidden', false)
                .attr('style', 'left:' + (mouse[0] + 15) +'px; top:' + (mouse[1] - 35) + 'px')
                .html(d.properties.District);
         })
         .on('mouseout', function() {
                tooltip.classed('hidden', true);
         });;
	});
</script>
</body>

## preview.png

      
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              preview.png
            
          
## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## WY_Districts.json

      
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              WY_Districts.json
            
          
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	<!DOCTYPE html>
	<meta charset="utf-8">
	<head>
	<title>D3 Block-a-Day: Day 8, January 8, 2017</title>
	<style>

	#wrapper {
	width: 100vw;
	height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	}

	path {
	fill: #ccc;
	stroke: #fff;
	stroke-width: .5px;
	}

	path:hover {
	fill: #879baa;
	}

	.hidden {
	display: none;
	}

	div.tooltip {
	background-color: #fff8dc;
	padding: 7px;
	text-shadow: #f5f5f5 0 1px 0;
	font: 13px Helvetica Neue;
	border: 2.5px solid;
	border-color: black;
	border-radius: 3px;
	opacity: 0.9;
	position: absolute;
	box-shadow: rgba(0, 0, 0, 0.3) 0 2px 10px;
	}
	</style>
	</head>
	<body>
	<script src="//d3js.org/d3.v4.min.js"></script>
	<script src="//d3js.org/topojson.v2.min.js"></script>
	<script src="https://d3js.org/d3-array.v1.min.js"></script>
	<script src="https://d3js.org/d3-geo.v1.min.js"></script>

	<div id="wrapper">
	<div id="chart"></div>
	</div>

	<script>

	var width = 960,
	height = 500;

	const zoom = d3.zoom()
	.scaleExtent([1/4, 3])
	.on('zoom', function () {
	d3.select('g').attr('transform', d3.event.transform)
	});

	const svg = d3.select('#chart')
	.append('svg')
	.attr('width', width)
	.attr('height', height)
	.call(zoom)

	const g = svg.append('g')

	var projection = d3.geoMercator()
	.center([ -107.5534, 43.00029 ])
	.scale(5000);

	var path = d3.geoPath()
	.projection(projection);

	var tooltip = d3.select('#chart').append('div')
	.attr('class', 'hidden tooltip');

	d3.json("WY_Districts.json", function(error, state_districts) {
	if (error) throw error;

	g.selectAll("path")
	.data(topojson.feature(state_districts, state_districts.objects.districts).features)
	.enter()
	.append("path")
	.attr("d", path)
	.on('mousemove', function(d) {
	var mouse = d3.mouse(svg.node()).map(function(d) {
	return parseInt(d);
	});
	tooltip.classed('hidden', false)
	.attr('style', 'left:' + (mouse[0] + 15) +'px; top:' + (mouse[1] - 35) + 'px')
	.html(d.properties.District);
	})
	.on('mouseout', function() {
	tooltip.classed('hidden', true);
	});;
	});
	</script>
	</body>