D3地區分佈隊列，並填寫問題

我不能讓d3.queue如果我叫一個回調函數在加載這兩個JSON文件中的一個在工作同時。如果我不使用d3.queue，只需將一個d3.json嵌套在另一個d3.json中，則地圖顯示出來，但填充問題（下面解釋）仍未解決。
有或沒有d3.queue，我無法獲得每個美國州顯示它自己的填充顏色。我相信這是因爲我沒有爲每個州創建單獨的「容器」。當我將鼠標懸停在瀏覽器檢查器中的「路徑類=狀態」容器上時，整個地圖會突出顯示，而不是像預期的那樣顯示個別狀態。因此，所有的顏色都被應用在彼此的頂部，但最黑暗的顏色占主導地位，只有那個可以被看到。

這是d3.queue

<!DOCTYPE html> 
 
<html lang="en"> 
 
<head> 
 
<meta charset="utf-8"> 
 
<title>Choropleth Map</title> 
 
<style> 
 

 
.counties { 
 
    fill: none; 
 
} 
 

 
.states { 
 
    fill: none; 
 
    stroke: black; 
 
    stroke-linejoin: round; 
 
} 
 

 
</style> 
 
</head> 
 
<body> 
 
<script src="https://d3js.org/d3.v3.min.js"></script> 
 
<script src="https://d3js.org/topojson.v1.min.js"></script> 
 
<script src="https://d3js.org/d3-queue.v3.min.js"></script> 
 

 
<script> 
 
var margin = {top: 10, right: 200, bottom: 30, left: 50}, 
 
    width = 960 - margin.left - margin.right, 
 
    height = 600 - margin.top - margin.bottom;  
 
    
 
var svg = d3.select("body").append("svg") 
 
    .attr("width", width + margin.left + margin.right) 
 
    .attr("height", height + margin.top + margin.bottom) 
 
    .append("g") 
 
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");  
 
    
 
var earnings = d3.map(); 
 

 
var path = d3.geo.path(); 
 

 
var x = d3.scale.linear() 
 
    .domain([1, 10]) 
 
    .rangeRound([600, 860]); 
 

 
var color = d3.scale.threshold() 
 
    .domain(d3.range(2, 10)) 
 
.range(['#f7fcfd','#e5f5f9','#ccece6','#99d8c9','#66c2a4','#41ae76','#238b45','#006d2c','#00441b']); 
 

 
// Load data 
 
d3.queue() 
 
    .defer(d3.json, "us.json") 
 
    .defer(d3.json, "median_earnings.json", loadjson) //removing loadjson from here brings up the map of U.S. states without any fill. Keeping it shows a blank page 
 
    .await(ready); 
 

 
function loadjson (error, earnings) { 
 
    if (error) throw error; 
 
    earnings.forEach(function(d) { 
 
      d.id = +d.id; 
 
      d.median = +d.median_earnings; 
 
    });  
 
} 
 
    
 
function ready(error, us) { 
 
    if (error) throw error; 
 

 
    svg.append("path") 
 
     .attr("class", "states")  
 
     .datum(topojson.feature(us, us.objects.states), function(a, b) { return a !== b; }) 
 
     .attr("d", path); 
 
    
 
     svg.selectAll("path") 
 
     .attr("class", "states")  
 
     .datum(earnings)  
 
     .attr("fill", function(d,i) { 
 
      return color(d[i].median); 
 
      }); 
 
} 
 

 
     
 
</script> 
 
</body> 
 
</html>

我使用的us.json文件是here和median_earnings here版本。

這是d3.queue

<!DOCTYPE html> 
 
<html lang="en"> 
 
<head> 
 
<meta charset="utf-8"> 
 
<title>Choropleth Map of College Data</title> 
 
<style> 
 

 
.counties { 
 
    fill: none; 
 
} 
 

 
.states { 
 
    stroke: #fff; 
 
    stroke-linejoin: round; 
 
} 
 

 
</style> 
 
</head> 
 
<body> 
 
<script src="https://d3js.org/d3.v3.min.js"></script> 
 
<script src="https://d3js.org/topojson.v1.min.js"></script> 
 
<script src="https://d3js.org/d3-queue.v3.min.js"></script> 
 
<script> 
 
var margin = {top: 10, right: 200, bottom: 30, left: 50}, 
 
    width = 960 - margin.left - margin.right, 
 
    height = 600 - margin.top - margin.bottom;  
 
    
 
var svg = d3.select("body").append("svg") 
 
    .attr("width", width + margin.left + margin.right) 
 
    .attr("height", height + margin.top + margin.bottom); 
 

 
var earnings = d3.map(); 
 

 
var path = d3.geo.path(); 
 

 
var x = d3.scale.linear() 
 
    .domain([1, 10]) 
 
    .rangeRound([600, 860]); 
 

 
var color = d3.scale.threshold() 
 
    .domain([15000, 18000, 21000, 24000, 27000, 30000, 33000]) .range(['#f7fcfd','#e5f5f9','#ccece6','#99d8c9','#66c2a4','#41ae76','#238b45','#005824']); 
 

 
d3.json("median_earnings.json", function loadjson(error, earnings) { 
 
    if (error) throw error; 
 
    earnings.forEach(function(d) { 
 
      d.id = +d.id; 
 
      d.median = +d.median_earnings; 
 
      
 
    d3.json("us.json", function ready(error, us) { 
 
     if (error) throw error; 
 
    
 
    svg.append("path") 
 
     .attr("class", "states")  
 
     .datum(topojson.feature(us, us.objects.states, function(a, b) { return a !== b; })) 
 
     .attr("d", path) 
 
     .style("stroke", "grey"); 
 
     
 
    svg.selectAll("path") 
 
     .attr("class", "states")  
 
     .datum(earnings)  
 
     .attr("fill", function(d,i) { 
 
      return color(d[i].median); 
 
      }); 
 
    });  
 
}) 
 
}); 
 

 
</script> 
 
</body> 
 
</html>

來源

2017-02-26 PythonGuy

這是因爲你的文件ID不匹配的版本。

來源

2017-03-02 02:07:33

你能詳細說明一下嗎？我不明白你的意思。 – PythonGuy

D3地區分佈隊列，並填寫問題

回答

相關問題