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make map responsive, add title to map using d3 'text' function, updat… #4

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make map responsive, add title to map using d3 'text' function, updat… #4

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22 changes: 12 additions & 10 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1,21 +1,23 @@
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width" />
<link rel="stylesheet" type="text/css" href="main.css">
<link rel="stylesheet" type="text/css" href="workshop-map.css">
<title>Bridge Foundry workshop locations</title>
</head>
<body>
<h1>Bridge Foundry workshop locations</h1>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/topojson.v2.min.js"></script>
<script src="workshop-map.js" type="text/javascript"></script>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/topojson.v2.min.js"></script>
<script src="workshop-map.js"></script>

<div id="example"></div>
<script>
d3.select("#example").call(workshopMap());
</script>
</body>
<div id="chart" ></div>

<script>
d3.select("#chart").call(workshopMap());
</script>

</body>
</html>


7 changes: 7 additions & 0 deletions workshop-map.css
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Original file line number Diff line number Diff line change
Expand Up @@ -21,4 +21,11 @@ div.tooltip {

div.hide {
display: none;
}

#chart {
margin:10%;
border:2px solid #d0d0d0;
border-radius: 5px;
z-index: 10
}
188 changes: 110 additions & 78 deletions workshop-map.js
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Original file line number Diff line number Diff line change
@@ -1,101 +1,133 @@
function workshopMap() {
var width = 960,
height = 450;
var svg, container, chartWrapper, path, width, height;

width = 960, height = 450;

//initialize svg
svg = d3.select('#chart').append('svg')
.attr("width", width)
.attr("height", height)
.call(responsivefy)

function chart(selection) {
selection.each(function(data) {

var projection = d3.geoMercator();
var projection = d3.geoMercator()
// initial size of map
.scale(150)
.translate([width / 2, height / 2]);

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


var svg = d3.select(this).append("svg")
.attr("width", width)
.attr("height", height);

var tooltipDiv = d3.select("body").append("div")
.attr("class", "tooltip hide")

// source: https://docs.google.com/spreadsheet/pub?key=0AjPWVMj9wWa6dDJOVE5DVTRxbjc2Vy1PMVlQTlh4eFE&single=true&gid=0&output=csv
// google spreadsheets no longer allows cross-domain access
//load data, then initialize chart
d3.queue()
.defer(d3.json, "data/world-50m.json")
.defer(d3.csv, "data/workshop-data.csv")
.await(ready);
.defer(d3.json, "data/world-50m.json")
.defer(d3.csv, "data/workshop-data.csv")
.await(init);

// load and display the World
function ready(error, world, workshops) {
function init(error, world, workshops) {
if (error) return console.log("there was an error loading the data: " + error);
var zoom,
circles;

const g = svg.append("g");
var zoom, circles;

g.append("path")
chartWrapper = svg.append('g')
.append("path")
.datum(topojson.feature(world, world.objects.countries))
.attr("d", path);



circles = svg.selectAll("circle")
.data(workshops)
.enter().append("circle")
.attr("class", "symbol")
.attr("cx", d => projection([d.longitude, d.latitude])[0])
.attr("cy", d => projection([d.longitude, d.latitude])[1])
.attr("r", d => 5)
.on("mouseover", function(d) {
var html = `${d.city}<br/>`;
//if (d["number (2013?)"]) { html += `${d["number (2013?)"]} Workshop`; }
//if (+d["number (2013?)"] > 1) { html += "s"; }
tooltipDiv.html(html);
tooltipDiv.style("opacity", 0);
tooltipDiv.attr("class", "tooltip");
var width = +tooltipDiv.style("width").slice(0, -2);
var height = +tooltipDiv.style("height").slice(0, -2);
tooltipDiv.style("left", `${d3.event.pageX - (width / 2)}px`);
tooltipDiv.style("top", `${d3.event.pageY - height - 20}px`);
tooltipDiv.style("opacity",1);
console.log(`City: ${d.city}, # of Workshops: ${d["number (2013?)"]}`);
})
.on("mouseout", d => {
tooltipDiv.attr("class", "tooltip hide");
g.select("path").node().focus();
});

zoom = d3.zoom().on("zoom", zoomed)
function zoomed(d) {
const transform = d3.event.transform;
const x = transform.x;
const y = transform.y;
const k = transform.k;
circles.transition().duration(100)
.attr("transform", `translate(${x},${y}) scale(${k})`)
.attr("r", k < 4 ? 5 - k + 0.1 : 5/k)
.attr("stroke-width", k < 2 ? .75 : 0);

g.transition().duration(100)
.attr("transform", `translate(${x},${y}) scale(${k})`)
.attr("stroke-width", k < 2 ? 2 : 0.0001);
}

g.select("path").node().focus();
.attr("d", path)

circles = drawCircles(svg, workshops, projection, tooltipDiv);

var zoom = d3.zoom()
.on("zoom", zoomed);

svg.call(zoom);
}
});
}
chart.width = function(_) {
if (!arguments.length) return width;
width = _;
return chart;
};

chart.height = function(_) {
if (!arguments.length) return height;
height = _;
return chart;
};

appendTitle(svg)

//render the chart
return chart;
}
}


function zoomed() {
const transform = d3.event.transform;
const x = transform.x;
const y = transform.y;
const k = transform.k;
circles.transition().duration(100)
.attr("transform", `translate(${x},${y}) scale(${k})`)
.attr("r", k < 4 ? 5 - k + 0.1 : 5/k)
.attr("stroke-width", k < 2 ? .75 : 0);

chartWrapper.transition().duration(100)
.attr("transform", `translate(${x},${y}) scale(${k})`)
.attr("stroke-width", k < 2 ? 2 : 0.0001);
}

function drawCircles(svg, workshops, projection, tooltipDiv, chartWrapper){
circles = svg.selectAll("circle")
.data(workshops)
.enter().append("circle")
.attr("class", "symbol")
.attr("cx", d => projection([d.longitude, d.latitude])[0])
.attr("cy", d => projection([d.longitude, d.latitude])[1])
.attr("r", d => 5)
.on("mouseover", function(d) {
var html = `${d.city}<br/>`;
//if (d["number (2013?)"]) { html += `${d["number (2013?)"]} Workshop`; }
//if (+d["number (2013?)"] > 1) { html += "s"; }
tooltipDiv.html(html);
tooltipDiv.style("opacity", 0);
tooltipDiv.attr("class", "tooltip");
var width = +tooltipDiv.style("width").slice(0, -2);
var height = +tooltipDiv.style("height").slice(0, -2);
tooltipDiv.style("left", `${d3.event.pageX - (width / 2)}px`);
tooltipDiv.style("top", `${d3.event.pageY - height - 20}px`);
tooltipDiv.style("opacity",1);
// console.log(`City: ${d.city}, # of Workshops: ${d["number (2013?)"]}`);
})
.on("mouseout", d => {
tooltipDiv.attr("class", "tooltip hide");
});
return circles
}

function responsivefy(svg) {
// get container + svg aspect ratio
container = d3.select(svg.node().parentNode),
width = parseInt(svg.style("width")),
height = parseInt(svg.style("height")),
aspect = width / height;

svg.attr("viewBox", "0 0 " + width + " " + height)
.attr("perserveAspectRatio", "xMinYMid")
.call(resize);

d3.select(window).on("resize", resize);

// get width of container and resize svg to fit it
function resize() {
containerWidth = parseInt(container.style("width"));
var targetWidth = containerWidth?containerWidth:parseInt(svg.style("width"));
svg.attr("width", targetWidth);
svg.attr("height", Math.round(targetWidth / aspect));
}
};

function appendTitle(svg){
var padding = 100
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "20px")
.attr("transform", "translate("+ (width/2) +","+(height-(padding/10))+")")
.text("Bridge Foundry workshop locations");
}