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choropleth.php
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choropleth.php
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<!DOCTYPE html>
<html>
<head>
<?php include 'meta.php'; ?>
<title>DPLA Visualizations</title>
<link href='http://fonts.googleapis.com/css?family=Raleway' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="style.css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript">
$(function() {
$('#d3-dpla').submit(function(e) {
e.preventDefault();
var q = $('#q').val();
var message = $('#message');
var hide = $('#hide');
hide.removeClass('hide');
if(q) {
$('svg, #records').detach();
$.getJSON("map-time.php?q=" + q, function(data) {
hide.addClass('hide');
message.text("Your search phrase: " + q);
var height = 600,
width = 875,
color_range = ["rgb(254,217,118)",
"rgb(254,178,76)","rgb(253,141,60)",
"rgb(240,59,32)", "rgb(189,0,38)"];
var color = d3.scale.quantize()
.domain([0, d3.max(data, function(d) { return d.value; })])
.range(color_range);
var projection = d3.geo.albersUsa()
.translate([width/2, height/2])
.scale([1200]);
var path = d3.geo.path()
.projection(projection);
var div = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
var svg = d3.select("body").append("svg")
.attr("height", height)
.attr("width", width);
d3.json("us-states.json", function(json) {
for (var i = 0; i < data.length; i++) {
var dataState = data[i].state;
var dataValue = parseFloat(data[i].value);
//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) {
json.features[j].properties.value = dataValue;
json.features[j].properties.query = data[i].query;
break;
}
}
}
svg.selectAll("path")
.data(json.features)
.enter()
.append("path")
.attr("d", path)
.style("stroke", 6)
.style("fill", function(d) {
var value = d.properties.value;
if (value) {
return color(value);
} else {
return "#ccc";
}
}).on("mouseover", function(d) {
div.transition()
.duration(200)
.style("opacity", .9);
var count = (typeof d.properties.value === "undefined") ? 0 : formatCount(d.properties.value);
div .html("Your term(s) appeared in <br/>" + count + " records in " +
d.properties.name
+ "<br/><br/>Click to view records for " + d.properties.name)
.style("left", (d3.event.pageX - 28) + "px")
.style("top", (d3.event.pageY - 28) + "px");
})
.on("mouseout", function() {
div.transition()
.duration(500)
.style("opacity", 0);
})
.on("click", function(d) {
window.open("http://dp.la/search?q=" + d.properties.query + "&state[]=" + d.properties.name, '_blank');
});
var all_colors = ["rgb(204, 204, 204)"].concat(color_range);
svg.append("text")
.attr("x", width - 60)
.attr("y", height - (height / 2) - 5)
.attr("height",30)
.attr("width",100)
.attr("dx", "-15px")
.style("fill", "black")
.style("text-anchor", "center")
.text("Fewer items");
var legend = svg.append("g")
.attr("class", "legend")
.attr("x", width - 60)
.attr("y", 10)
.attr("height", "auto")
.attr("width", 30);
legend.selectAll('g').data(all_colors)
.enter()
.append('g')
.each(function(d,i) {
var g = d3.select(this);
g.append("rect")
.attr("x", width - 55)
.attr("y", (height - height /2) + i * 25)
.attr("width", 30)
.attr("height", 30)
.style("fill", d);
});
svg.append("text")
.attr("x", width - 60)
.attr("y", height - (height - 470))
.attr("height",30)
.attr("width",100)
.attr("dx", "-15px")
.style("fill", "black")
.style("text-anchor", "center")
.text("More items");
});
});
} else {
hide.addClass('hide');
message.text('Please submit a search term');
}
});
function formatCount(number) {
return number.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
});
</script>
<style type="text/css">
path {
stroke: white;
shape-rendering: crispEdges;
}
path:hover {
fill: brown;
fill-opacity: .7;
}
svg {
margin-left: 15%;
}
text {
font-size: 12px;
font-family: Raleway, sans-serif;
}
</style>
</head>
<body>
<?php include_once 'header.php'; ?>
<h1>DPLA Visualizations - See how your term(s) frequency varies by state</h1>
<p>Note: Depending on your search terms it can take some time to return the mapped items</p>
<p>Hover over a state to see how many items were returned for that state</p>
<form action="#" method="post" id="d3-dpla">
<input type="text" name="q" id="q" placeholder="Search the DPLA"/>
<input type="submit" value="Search">
</form>
<p id="message"></p>
<img src="ajax-loader.gif" alt="load indicator" id="hide" class="hide" />
<?php include_once 'google.php'; ?>
</body>
</html>