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I have this straight forward example where I wanted to use my data and my topojson instead. I get the data loaded but the visualization is not working properly.
Logging the dataRange() gives my -INFINITY,INFINITY, so something with the ranging is noch wokring but I can't see what it is.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>d3 choropleth map</title>
<style>
#wrapper {
width: 960px;
margin: -30px auto 0;
}
#map {
width: 960px;
height: 580px;
position: relative;
}
.stroke {
fill: none;
stroke: #888;
stroke-width: 2px;
}
.fill {
fill: #fff;
}
.graticule {
fill: none;
stroke: #777;
stroke-width: .5px;
stroke-opacity: .5;
}
.land {
fill: #222;
}
.boundary {
fill: none;
stroke: #fff;
stroke-width: .5px;
}
.country {
fill: steelblue;
stroke: white;
}
#play, #clock {
position: absolute;
top: 15px;
}
#play {
left: 15px;
}
#clock {
left: 65px;
}
</style>
</head>
<body>
<div id="wrapper">
<div id="map"></div>
<button id="play">play</button>
<span id="clock">year</span>
</div>
<script src="http://ift.tt/JmLP3T"></script>
<script src="http://ift.tt/1oOECWY"></script>
<script src="http://ift.tt/1hUyqi2"></script>
<script src="http://ift.tt/JmLP3U"></script>
<script>
//globals
var width, height, projection, path, graticule, svg, attributeArray = [], currentAttribute = 0, playing = false;
function init() {
setMap();
animateMap();
}
function setMap() {
width = 960, height = 580; // map width and height, matches
var projection = d3.geo.mercator()
.translate([width / 2, height])
//.scale((width - 1) / 2 / Math.PI);
.scale(400);
path = d3.geo.path() // create path generator function
.projection(projection); // add our define projection to it
graticule = d3.geo.graticule(); // create a graticule
svg = d3.select("#map").append("svg") // append a svg to our html div to hold our map
.attr("width", width)
.attr("height", height);
svg.append("defs").append("path") // prepare some svg for outer container of svg elements
.datum({type: "Sphere"})
.attr("id", "sphere")
.attr("d", path);
svg.append("use") // use that svg to style with css
.attr("class", "stroke")
.attr("xlink:href", "#sphere");
svg.append("path") // use path generator to draw a graticule
.datum(graticule)
.attr("class", "graticule")
.attr("d", path);
loadData(); // let's load our data next
}
function loadData() {
queue() // queue function loads all external data files asynchronously
.defer(d3.json, "mapdata/germany.json") // our geometries
.defer(d3.csv, "choroplethmap.csv") // and associated data in csv file
.await(processData); // once all files are loaded, call the processData function passing
// the loaded objects as arguments
}
function processData(error,world,countryData) {
// function accepts any errors from the queue function as first argument, then
// each data object in the order of chained defer() methods above
var countries = world.objects.states_germany.geometries // store the path in variable for ease
//console.log(countries);
for (var i in countries) { // for each geometry object
for (var j in countryData) { // for each row in the CSV
console.log(countryData[j]);
if(countries[i].id == countryData[j].id) {
//console.log("SUCCESS"); // if they match
for(var k in countryData[i]) { // for each column in the a row within the CSV
if(k != 'name' && k != 'id') { // let's not add the name or id as props since we already have them
if(attributeArray.indexOf(k) == -1) {
attributeArray.push(k); // add new column headings to our array for later
}
countries[i][k] = Number(countryData[j][k]) // add each CSV column key/value to geometry object
}
}
break; // stop looking through the CSV since we made our match
}
}
}
d3.select('#clock').html(attributeArray[currentAttribute]); // populate the clock initially with the current year
drawMap(world); // let's mug the map now with our newly populated data object
}
function drawMap(world) {
svg.selectAll(".country") // select country objects (which don't exist yet)
.data(topojson.feature(world, world.objects.states_germany).features) // bind data to these non-existent objects
.enter().append("path") // prepare data to be appended to paths
.attr("class", "country") // give them a class for styling and access later
.attr("id", function(d) { return "code_" + d.properties.id; }, true) // give each a unique id for access later
.attr("d", path); // create them using the svg path generator defined above
var dataRange = getDataRange(); // get the min/max values from the current year's range of data values
d3.selectAll('.country') // select all the countries
.attr('fill-opacity', function(d) {
return getColor(d[attributeArray[currentAttribute]], dataRange); // give them an opacity value based on their current value
});
}
function sequenceMap() {
var dataRange = getDataRange(); // get the min/max values from the current year's range of data values
d3.selectAll('.country').transition() //select all the countries and prepare for a transition to new values
.duration(750) // give it a smooth time period for the transition
.attr('fill-opacity', function(d) {
return getColor(d[attributeArray[currentAttribute]], dataRange); // the end color value
})
}
function getColor(valueIn, valuesIn) {
var color = d3.scale.linear() // create a linear scale
.domain([valuesIn[0],valuesIn[1]]) // input uses min and max values
.range([.3,1]); // output for opacity between .3 and 1 %
return color(valueIn); // return that number to the caller
}
function getDataRange() {
// function loops through all the data values from the current data attribute
// and returns the min and max values
var min = Infinity, max = -Infinity;
d3.selectAll('.country')
.each(function(d,i) {
var currentValue = d.properties[attributeArray[currentAttribute]];
if(currentValue <= min && currentValue != -99 && currentValue != 'undefined') {
min = currentValue;
}
if(currentValue >= max && currentValue != -99 && currentValue != 'undefined') {
max = currentValue;
}
});
console.log([min,max]);
return [min,max]; //boomsauce
}
function animateMap() {
var timer; // create timer object
d3.select('#play')
.on('click', function() { // when user clicks the play button
if(playing == false) { // if the map is currently playing
timer = setInterval(function(){ // set a JS interval
if(currentAttribute < attributeArray.length-1) {
currentAttribute +=1; // increment the current attribute counter
} else {
currentAttribute = 0; // or reset it to zero
}
sequenceMap(); // update the representation of the map
d3.select('#clock').html(attributeArray[currentAttribute]); // update the clock
}, 2000);
d3.select(this).html('stop'); // change the button label to stop
playing = true; // change the status of the animation
} else { // else if is currently playing
clearInterval(timer); // stop the animation by clearing the interval
d3.select(this).html('play'); // change the button label to play
playing = false; // change the status again
}
});
}
window.onload = init(); // magic starts here
</script>
</body>
</html>
So where is the mistake? You can finde the full data (map etc) here
asked 44 secs ago
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Choropleth example in D3 is not working properly
