新: 我在我的解决方案中发布的 fiddle 有效(https://jsfiddle.net/jnf84n7c/)。但是，当我尝试在我的项目中实现这些策略时，我遇到了问题。当我点击不是第一个图表的图表时，我收到一条错误消息。
Uncaught TypeError: a.group.all is not a function (error located in dc.min.js)
知道为什么它在 fiddle 中有效，但在我的 ruby-on-rails 应用程序中却不起作用吗？
新代码
var data = [
{"key":"KEY-1","state":"MA","status":["A","R","C"],"items":["orange","meat","bread"],"date":"Y16"},
{"key":"KEY-2","state":"MA","status":["A","O"],"items":["apple","bread"],"date":"Y15"},
{"key":"KEY-3","state":"TX","status":["O"],"items":["bread"],"date":"Y16"},
{"key":"KEY-4","state":"TN","status":["A","R"],"items":["apple","bread"],"date":"Y16"},
{"key":"KEY-5","state":"TN","status":["A","O"],"items":["apple","orange"],"date":"Y15"},
{"key":"KEY-6","state":"TN","status":[],"items":[],"date":"Y14"}
];
var cf = crossfilter(data);
var dates = cf.dimension(function(d){ return d.date; });
var datesGroup = dates.group();
var states = cf.dimension(function(d){ return d.state; });
var statesGroup = states.group();
var itemsDim = cf.dimension(function(d){ return d.items; });
var itemsGroup = itemsDim.groupAll().reduce(reduceAdd, reduceRemove, reduceInitial).value();
itemsGroup.all = myAllFunction;
var states_items_group_apple = states.group().reduce(reduceAdd_apple, reduceRemove_apple, reduceInitial_items);
var states_items_group_bread = states.group().reduce(reduceAdd_bread, reduceRemove_bread, reduceInitial_items);
var states_items_group_orange = states.group().reduce(reduceAdd_orange, reduceRemove_orange, reduceInitial_items);
var states_items_group_meat = states.group().reduce(reduceAdd_meat, reduceRemove_meat, reduceInitial_items);
var itemsGroup1 = itemsDim.groupAll().reduce(reduceAdd1, reduceRemove1, reduceInitial).value();
var itemsGroup2 = itemsDim.groupAll().reduce(reduceAdd2, reduceRemove2, reduceInitial).value();
var itemsGroup3 = itemsDim.groupAll().reduce(reduceAdd3, reduceRemove3, reduceInitial).value();
itemsGroup1.all = myAllFunction;
itemsGroup2.all = myAllFunction;
itemsGroup3.all = myAllFunction;
var status = cf.dimension(function(d){ return d.status; });
var statusGroup1 = status.groupAll().reduce(reduceAdd_group1, reduceRemove_group1, reduceInitial_group).value();
var statusGroup2 = status.groupAll().reduce(reduceAdd_group2, reduceRemove_group2, reduceInitial_group).value();
var statusGroup3 = status.groupAll().reduce(reduceAdd_group3, reduceRemove_group3, reduceInitial_group).value();
var statusGroup4 = status.groupAll().reduce(reduceAdd_group4, reduceRemove_group4, reduceInitial_group).value();
statusGroup1.all = myAllFunction;
statusGroup2.all = myAllFunction;
statusGroup3.all = myAllFunction;
statusGroup4.all = myAllFunction;
var statusGroup = status.groupAll().reduce(reduceAdd_group, reduceRemove_group, reduceInitial_group).value();
statusGroup.all = myAllFunction;
var row = dc.rowChart("#rowchart");
row.height(170)
.dimension(itemsDim)
.group(itemsGroup)
.ordering(function(d){return -d.value;})
.renderLabel(true)
.ordinalColors(["#008600","#80FF80","#FF80FF","#860086"])
.xAxis().ticks(3);
row.filterHandler(myFilterFunction);
var pie1 = dc.pieChart("#piechart1");
pie1.height(75).width(75)
.dimension(dates)
.group(datesGroup);
var pie2 = dc.pieChart("#piechart2");
pie2.height(75).width(75)
.dimension(states)
.group(statesGroup);
var pie3 = dc.pieChart("#piechart3");
pie3.height(75).width(75)
.dimension(status)
.group(statusGroup);
pie3.filterHandler(myFilterFunction);
var bar = dc.barChart("#barchart");
bar.width(500).height(200)
.dimension(states)
.group(states_items_group_bread, 'bread')
.stack(states_items_group_orange, 'orange')
.stack(states_items_group_apple, 'apple')
.stack(states_items_group_meat, 'meat')
.valueAccessor(function(p){ return p.value.count; })
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend().x(100).y(0).horizontal(1).itemHeight(13).gap(6).legendWidth(400).itemWidth(100))
.gap(10)
.elasticX(true).elasticY(true)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal)
.margins({top:30,left:50,right:10,bottom:50});
var bar2 = dc.barChart("#barchart2");
bar2.width(500).height(200)
.dimension(itemsDim)
.group(itemsGroup1,'MA')
.stack(itemsGroup2,'TN')
.stack(itemsGroup3,'TX')
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend().x(60).y(0).horizontal(1).itemHeight(13).gap(6).legendWidth(400).itemWidth(60))
.gap(10)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal)
.ordinalColors(["#008600","#80FF80","#FF80FF","#860086"])
.margins({top:30,left:50,right:10,bottom:50});
bar2.filterHandler(myFilterFunction);
var bar3 = dc.barChart("#barchart3");
bar3.width(500).height(200)
.dimension(status)
.group(statusGroup1,"bread")
.stack(statusGroup2,"apple")
.stack(statusGroup3,"orange")
.stack(statusGroup4,"meat")
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend().x(60).y(0).horizontal(1).itemHeight(13).gap(6).legendWidth(400).itemWidth(60))
.gap(10)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal)
.margins({top:30,left:50,right:10,bottom:50});
bar3.filterHandler(myFilterFunction);
dc.renderAll();
function reduceAdd(p,v){
if (v.items[0] === "") return p;
v.items.forEach(function(val,idx){
p[val] = (p[val] || 0) + 1;
});
return p;
}
function reduceRemove(p,v){
if (v.items[0] === "") return p;
v.items.forEach(function(val,idx){
p[val] = (p[val] || 0) - 1;
});
return p;
}
function reduceInitial(){
return {
bread: 0,
apple: 0,
orange: 0,
meat: 0
};
}
function reduceAdd1(p,v){
if (v.items[0] === "") return p;
if (v.state === "MA"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove1(p,v){
if (v.items[0] === "") return p;
if (v.state === "MA"){
v.items.forEach(function(val,idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd2(p,v){
if (v.items[0] === "") return p;
if (v.state === "TN"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove2(p,v){
if (v.items[0] === "") return p;
if (v.state === "TN"){
v.items.forEach(function(val,idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd3(p,v){
if (v.items[0] === "") return p;
if (v.state === "TX"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove3(p,v){
if (v.items[0] === "") return p;
if (v.state === "TX"){
v.items.forEach(function(val,idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd_apple(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'apple' ? 1 : 0);
});
return p;
}
function reduceRemove_apple(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'apple' ? 1 : 0);
});
return p;
}
function reduceAdd_bread(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'bread' ? 1 : 0);
});
return p;
}
function reduceRemove_bread(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'bread' ? 1 : 0);
});
return p;
}
function reduceAdd_orange(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'orange' ? 1 : 0);
});
return p;
}
function reduceRemove_orange(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'orange' ? 1 : 0);
});
return p;
}
function reduceAdd_meat(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'meat' ? 1 : 0);
});
return p;
}
function reduceRemove_meat(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'meat' ? 1 : 0);
});
return p;
}
function reduceAdd_group1(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if (val1 === "bread"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A += (val2 === 'A' ? 1 : 0);
p.O += (val2 === 'O' ? 1 : 0);
p.C += (val2 === 'C' ? 1 : 0);
p.R += (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceRemove_group1(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "bread"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A -= (val2 === 'A' ? 1 : 0);
p.O -= (val2 === 'O' ? 1 : 0);
p.C -= (val2 === 'C' ? 1 : 0);
p.R -= (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceAdd_group2(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "apple"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A += (val2 === 'A' ? 1 : 0);
p.O += (val2 === 'O' ? 1 : 0);
p.C += (val2 === 'C' ? 1 : 0);
p.R += (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceRemove_group2(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "apple"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A -= (val2 === 'A' ? 1 : 0);
p.O -= (val2 === 'O' ? 1 : 0);
p.C -= (val2 === 'C' ? 1 : 0);
p.R -= (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceAdd_group3(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "orange"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A += (val2 === 'A' ? 1 : 0);
p.O += (val2 === 'O' ? 1 : 0);
p.C += (val2 === 'C' ? 1 : 0);
p.R += (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceRemove_group3(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "orange"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A -= (val2 === 'A' ? 1 : 0);
p.O -= (val2 === 'O' ? 1 : 0);
p.C -= (val2 === 'C' ? 1 : 0);
p.R -= (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceAdd_group4(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "meat"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A += (val2 === 'A' ? 1 : 0);
p.O += (val2 === 'O' ? 1 : 0);
p.C += (val2 === 'C' ? 1 : 0);
p.R += (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceRemove_group4(p,v){
if (v.items[0] === "") return p;
if (v.status[0] === "") return p;
v.items.forEach(function(val1,idx1){
if(val1 === "meat"){
v.status.forEach(function(val2,idx2){
if(idx1 === idx2){
p.A -= (val2 === 'A' ? 1 : 0);
p.O -= (val2 === 'O' ? 1 : 0);
p.C -= (val2 === 'C' ? 1 : 0);
p.R -= (val2 === 'R' ? 1 : 0);
}
});
}
});
return p;
}
function reduceAdd_group(p,v){
if (v.status[0] === "") return p;
v.status.forEach(function(val,idx){
p[val] = (p[val] || 0) + 1;
});
return p;
}
function reduceRemove_group(p,v){
if (v.status[0] === "") return p;
v.status.forEach(function(val,idx){
p[val] = (p[val] || 0) - 1;
});
return p;
}
function reduceInitial_group(){
return {
A: 0,
O: 0,
C: 0,
R: 0
};
}
function reduceInitial_items(){
return {
count: 0,
state: ''
};
}
//filter function:
function myFilterFunction(dimension,filters){
dimension.filter(null);
if (filters.length === 0)
dimension.filter(null);
else
dimension.filterFunction(function(d){
for(var i=0; i<d.length; i++){
if (filters.indexOf(d[i]) >= 0) return true;
}
return false;
});
return filters;
}
function myAllFunction(){
var newObject = [];
for(var key in this){
if(this.hasOwnProperty(key) && key != "all"){
newObject.push({
key: key,
value: this[key]
});
}
}
return newObject;
};
老问题: 很抱歉提出另一个问题。不幸的是，我无法评论其他帖子来问我的问题。与我相似的两个问题是: dc.js - how to group by unique id 和 Is there a way to tell crossfilter to treat elements of array as separate records instead of treating whole array as single key?
我正在使用后一个中解释的代码。但是，我希望能够堆叠。正如您将能够在 jsfiddle 中看到的那样，底部条形图没有列出 x 轴中的项目，而是堆叠不同的状态计数。任何帮助将不胜感激。谢谢!
这是原始 fiddle :https://jsfiddle.net/7qwqcakr/1/
我几乎用这个 fiddle 搞定了:https://jsfiddle.net/wq0ed5hr/ 但是堆叠的条形图都是一种颜色，尽管图例将它们作为不同的颜色。如何解决颜色问题？
修复了颜色问题:https://jsfiddle.net/rmc2zpr4/
现在唯一的问题是处理“计数问题”，正如我在下面的解决方案和评论中所解释的那样。
这是更新的代码:
var data = [
{"key":"KEY-1","state":"MA","items":["orange","meat","bread"],"date":"Y16"},
{"key":"KEY-2","state":"MA","items":["apple","bread"],"date":"Y15"},
{"key":"KEY-3","state":"TX","items":["bread"],"date":"Y16"},
{"key":"KEY-4","state":"TN","items":["apple","bread"],"date":"Y16"},
{"key":"KEY-5","state":"TN","items":["apple","orange"],"date":"Y15"},
{"key":"KEY-6","state":"TN","items":[],"date":"Y14"}
];
var cf = crossfilter(data);
var dates = cf.dimension(function(d){ return d.date; });
var datesGroup = dates.group().reduceCount(function(d){ return d.key; });
var states = cf.dimension(function(d){ return d.state; });
var statesGroup = states.group().reduceCount(function(d){ return d.key; });
var itemsDim = cf.dimension(function(d){ return d.items; });
var itemsGroup = itemsDim.groupAll().reduce(reduceAdd, reduceRemove, reduceInitial).value();
itemsGroup.all = myAllFunction;
var statesDim = cf.dimension(function(d){ return d.state; });
var states_items_group_apple = statesDim.group().reduce(reduceAdd_apple, reduceRemove_apple, reduceInitial_items);
var states_items_group_bread = statesDim.group().reduce(reduceAdd_bread, reduceRemove_bread, reduceInitial_items);
var states_items_group_orange = statesDim.group().reduce(reduceAdd_orange, reduceRemove_orange, reduceInitial_items);
var states_items_group_meat = statesDim.group().reduce(reduceAdd_meat, reduceRemove_meat, reduceInitial_items);
var items = cf.dimension(function(d){ return d.items; })
var itemsGroup1 = items.groupAll().reduce(reduceAdd1, reduceRemove1, reduceInitial).value();
var itemsGroup2 = items.groupAll().reduce(reduceAdd2, reduceRemove2, reduceInitial).value();
var itemsGroup3 = items.groupAll().reduce(reduceAdd3, reduceRemove3, reduceInitial).value();
itemsGroup1.all = myAllFunction;
itemsGroup2.all = myAllFunction;
itemsGroup3.all = myAllFunction;
var row = dc.rowChart("#rowchart");
row.height(170)
.dimension(itemsDim)
.group(itemsGroup)
.ordering(function(d){return -d.value;})
.renderLabel(true)
.ordinalColors(["#008600","#80FF80","#FF80FF","#860086"])
.xAxis().ticks(3);
row.filterHandler(myFilterFunction);
var pie1 = dc.pieChart("#piechart1");
pie1.height(75).width(75)
.dimension(dates)
.group(datesGroup);
var pie2 = dc.pieChart("#piechart2");
pie2.height(75).width(75)
.dimension(states)
.group(statesGroup);
var bar = dc.barChart("#barchart");
bar.width(500).height(200)
.dimension(statesDim)
.group(states_items_group_bread, 'bread')
.stack(states_items_group_orange, 'orange')
.stack(states_items_group_apple, 'apple')
.stack(states_items_group_meat, 'meat')
.valueAccessor(function(p){ return p.value.count; })
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend().x(100).y(0).horizontal(1).itemHeight(13).gap(6).legendWidth(400).itemWidth(100))
.gap(10)
.elasticX(true).elasticY(true)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal)
.margins({top:30,left:50,right:10,bottom:50});
var bar2 = dc.barChart("#barchart2");
bar2.width(500).height(200)
.dimension(items)
.group(itemsGroup1,'MA')
.stack(itemsGroup2,'TN')
.stack(itemsGroup3,'TX')
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend().x(60).y(0).horizontal(1).itemHeight(13).gap(6).legendWidth(400).itemWidth(60))
.gap(10)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal)
.ordinalColors(["#008600","#80FF80","#FF80FF","#860086"])
.margins({top:30,left:50,right:10,bottom:50});
bar2.filterHandler(myFilterFunction);
dc.renderAll();
//reduce functions:
function reduceAdd(p,v){
if (v.items[0] === "") return p;
v.items.forEach(function(val,idx){
p[val] = (p[val] || 0) + 1;
});
return p;
}
function reduceRemove(p,v){
if (v.items[0] === "") return p;
v.items.forEach(function(val,idx){
p[val] = (p[val] || 0) - 1;
});
return p;
}
function reduceInitial(){
return {
bread: 0,
apple: 0,
orange: 0,
meat: 0
};
}
function reduceAdd1(p,v){
if (v.items[0] === "") return p;
if (v.state === "MA"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove1(p,v){
if (v.items[0] === "") return p;
if (v.state === "MA"){
v.items.forEach(function(val, idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd2(p,v){
if (v.items[0] === "") return p;
if (v.state === "TN"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove2(p,v){
if (v.items[0] === "") return p;
if (v.state === "TN"){
v.items.forEach(function(val,idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd3(p,v){
if (v.items[0] === "") return p;
if (v.state === "TX"){
v.items.forEach(function(val,idx){
p.bread += (val === 'bread' ? 1 : 0);
p.apple += (val === 'apple' ? 1 : 0);
p.orange += (val === 'orange' ? 1 : 0);
p.meat += (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceRemove3(p,v){
if (v.items[0] === "") return p;
if (v.state === "TX"){
v.items.forEach(function(val,idx){
p.bread -= (val === 'bread' ? 1 : 0);
p.apple -= (val === 'apple' ? 1 : 0);
p.orange -= (val === 'orange' ? 1 : 0);
p.meat -= (val === 'meat' ? 1 : 0);
});
}
return p;
}
function reduceAdd_apple(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'apple' ? 1 : 0);
});
return p;
}
function reduceRemove_apple(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'apple' ? 1 : 0);
});
return p;
}
function reduceAdd_bread(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'bread' ? 1 : 0);
});
return p;
}
function reduceRemove_bread(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'bread' ? 1 : 0);
});
return p;
}
function reduceAdd_orange(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'orange' ? 1 : 0);
});
return p;
}
function reduceRemove_orange(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'orange' ? 1 : 0);
});
return p;
}
function reduceAdd_meat(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count += (val === 'meat' ? 1 : 0);
});
return p;
}
function reduceRemove_meat(p,v){
if (v.items[0] === "") return p;
p.state = v.state;
v.items.forEach(function(val,idx){
p.count -= (val === 'meat' ? 1 : 0);
});
return p;
}
function reduceInitial_items(){
return {
count: 0,
state: ''
};
}
function myFilterFunction(dimension,filters){
dimension.filter(null);
if(filters.length === 0)
dimension.filter(null);
else
dimension.filterFunction(function(d){
for(var i=0; i<d.length; i++){
if(filters.indexOf(d[i]) >= 0) return true;
}
return false;
});
return filters;
}
function myAllFunction(){
var newObject = [];
for(var key in this){
if(this.hasOwnProperty(key) && key != "all"){
newObject.push({
key: key,
value: this[key]
});
}
}
return newObject;
};
最佳答案
您需要做的第一件事是升级到:
- dc.js 2.0 测试版
- Crossfilter 1.4.0-beta.06(Crossfilter 现在位于此处:https://github.com/crossfilter/crossfilter)
- Reductio(推荐)这样您就不必手动构建自定义分组 - 这不是绝对必要的，但分组是很多问题的根源，所以我建议使用 Reductio或 Universe利用前人的工作成果。
接下来，有了所有这些新的好处，我们可以大大简化事情。这是使用这些库的新功能的更新 fiddle :https://jsfiddle.net/ff8ox8vq/
我将在下面的完整代码示例中详细介绍它们。
var data = [
{"key":"KEY-1","state":"MA", "items":["orange", "meat", "bread"], "date":"Y16"},
{"key":"KEY-2","state":"MA", "items":["apple", "bread"], "date":"Y15"},
{"key":"KEY-3","state":"TX", "items":["bread"], "date":"Y16"},
{"key":"KEY-4","state":"TN", "items":["apple", "bread"], "date":"Y16"},
{"key":"KEY-5","state":"TN", "items":["apple", "orange"], "date":"Y15"},
{"key":"KEY-6","state":"TN", "items": [], "date":"Y14"}
];
var cf = crossfilter(data);
以上无变化。
//dimensions and groups:
var dates = cf.dimension(function(d){ return d.date; });
var datesGroup = dates.group();
var states = cf.dimension(function(d){ return d.state; });
var statesGroup = states.group()
.reduceCount 是组的默认设置。在新组上调用它不会做任何事情。 reduceCount 也不接受任何参数(与 reduceSum 不同)。所以我们只是摆脱它。
var itemsDim = cf.dimension(function(d){ return d.items; }, true);
var itemsGroup = itemsDim.group();
这是它开始变得有趣的地方。 Crossfilter 1.4.0 支持维度调用上的“数组维度”标志。如果我们将其设置为 true，Crossfilter 就会知道 items 是一个数组，并且会智能地处理它。您不再需要重写 .all 方法或类似的方法。它在内部处理。
var addValueGroup = function(reducer, key) {
reducer
.value(key)
.filter(function(d) { return d.items.indexOf(key) !== -1; })
.count(true)
}
将特定项目计数添加到状态组的实用函数。
// Reductio nest to break down states by item
var reducer = reductio().count(true)
addValueGroup(reducer, "orange")
addValueGroup(reducer, "meat")
addValueGroup(reducer, "bread")
addValueGroup(reducer, "apple")
reducer(statesGroup);
配置statesGroup的分组。 Reductio 只是构建自定义的 reduce 函数。这里发生的是我们维护一个状态中所有记录的顶级计数，然后我们为每种类型的项目创建过滤计数。在此运行后执行 console.log(statesGroup.all()) 以查看结果组的结构。
//graphs:
var row = dc.rowChart("#rowchart");
row
.renderLabel(true)
.height(200)
.dimension(itemsDim)
.group(itemsGroup)
.ordering(function(d){return -d.value;})
.xAxis().ticks(3);
var pie1 = dc.pieChart("#piechart1");
pie1
.height(75)
.width(75)
.dimension(dates)
.group(datesGroup);
没有变化。
var pie2 = dc.pieChart("#piechart2");
pie2
.height(75)
.width(75)
.dimension(states)
.group(statesGroup)
.valueAccessor(function(d) { return d.value.count; });
我们的 Reductio reducer 在某种程度上改变了组的结构，所以我们需要一个 valueAccessor。
var bar = dc.barChart("#barchart");
bar.width(500).height(200)
.dimension(states)
.group(statesGroup, 'orange', sel_stack('orange'))
.stack(statesGroup, 'meat', sel_stack('meat'))
.stack(statesGroup, 'bread', sel_stack('bread'))
.stack(statesGroup, 'apple', sel_stack('apple'))
.renderHorizontalGridLines(true)
.renderLabel(true)
.legend(dc.legend())
.gap(10)
.yAxisLabel("count")
.x(d3.scale.ordinal())
.xUnits(dc.units.ordinal);
只适用于没有花哨的自定义过滤器功能或任何东西。 dc.js 和 Crossfilter 知道该怎么做。不幸的是，在 dc.js 中似乎确实存在一个带有有序堆叠条形图的错误，因此您现在必须在渲染后正确地为条形着色:-( 也许 Gordon 会在这里插话并提示。
dc.renderAll();
function sel_stack(i) {
return function(d) {
return d.value[i] ? d.value[i].count : 0;
};
}
由于更新的组结构而略有变化，并且在您错误输入其中一个项目键的情况下有一点安全性。
关于javascript - d3/dc.js - 如何创建堆叠条形图，同时告诉 crossfilter 将数组中的元素视为单独的记录？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40307099/