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d3 / dc.js - 如何在告訴crossfilter將數組中的元素視為單獨的記錄時創建堆積條形圖？

[英]d3/dc.js - How to create a stacked bar chart while telling crossfilter to treat elements in an array as separate records?

 原文  2016-10-28 14:17:46  6   2    javascript/ d3.js/ dc.js/ ruby-on-rails-2/ crossfilter

問題描述

新：我在我的解決方案中發布的小提琴（ https://jsfiddle.net/jnf84n7c/ ）。 但是，當我嘗試在我的項目中實施策略時，我遇到了問題。 當我點擊不是第一張圖的圖表時，我收到一條錯誤消息。

未捕獲的TypeError：a.group.all不是函數（錯誤位於dc.min.js中）

知道為什么它適用於小提琴但不適用於我的ruby-on-rails應用程序？

新代碼 

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;
};

舊問題：很抱歉創建另一個問題。 不幸的是，我無法評論其他帖子來提問我的問題。 與我類似的兩個問題是： dc.js - 如何按唯一ID分組 ， 是否有辦法告訴crossfilter將數組元素視為單獨的記錄而不是將整個數組視為單個鍵？

我正在使用后一個解釋的代碼。 但是，我希望能夠堆疊。 正如您將能夠在jsfiddle中看到的那樣，底部條形圖不會列出x軸中的項目，而是堆疊不同的狀態計數。 任何幫助將不勝感激。 謝謝！

這是最初的小提琴： https ： //jsfiddle.net/7qwqcakr/1/

我幾乎有這個小提琴： https ： //jsfiddle.net/wq0ed5hr/但是堆積的條形圖都是一種顏色，即使圖例將它們作為不同的顏色。 如何修復顏色問題？

修復了顏色問題： https ： //jsfiddle.net/rmc2zpr4/

現在唯一的問題是處理“計數問題”，正如我在下面的解決方案和評論中所解釋的那樣。

這是更新的代碼： 

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;
};

2 個解決方案

解決方案1
 1  2016-10-28 18:33:26

您需要做的第一件事就是升級到：

  • dc.js 2.0測試版
  • Crossfilter 1.4.0-beta.06（Crossfilter現在住在這里： https ： //github.com/crossfilter/crossfilter ）
  • Reductio（推薦），這樣你就不必手動建立自定義分組 - 這不是絕對必要的，但分組是很多問題的根源，所以我建議使用Reductio或Universe來利用那些來的人的工作之前。

接下來，憑借所有這些新的優點，我們可以簡化一件事。 這是使用這些庫的新功能的更新小提琴： https ： //jsfiddle.net/ff8ox8vq/

我將在下面的完整代碼示例中詳細介紹它們。 

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);

上面沒有變化。 

//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是組的默認設置。 在新組上調用它不會做任何事情。 reduceCount也不帶任何參數（與reduceSum不同）。 所以我們擺脫它。 

var itemsDim    = cf.dimension(function(d){ return d.items; }, true);
var itemsGroup  = itemsDim.group();

這是它開始變得有趣的地方。 Crossfilter 1.4.0支持維度調用上的“數組維度”標志。 如果我們將其設置為true ，則Crossfilter知道items是一個數組，並且知道如何處理它。 您不再需要覆蓋.all方法或類似的東西。 它是內部處理的。 

var addValueGroup = function(reducer, key) {
    reducer
    .value(key)
    .filter(function(d) { return d.items.indexOf(key) !== -1; })
    .count(true)
}

用於將特定於項目的計數添加到狀態組的實用程序功能。 

// 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的分組。 Reductio只是構建自定義縮減功能。 這里發生的是我們維護狀態中所有記錄的頂級計數，然后我們為每種類型的項創建過濾計數。 在此運行之后執行console.log(statesGroup.all())以查看結果組的結構。 

//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);

沒變。 

var pie2 = dc.pieChart("#piechart2");
pie2
  .height(75)
  .width(75)
  .dimension(states)
  .group(statesGroup)
  .valueAccessor(function(d) { return d.value.count; });

我們的Reductio reducer在某種程度上改變了組的結構，所以我們需要一個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);

只是沒有花哨的自定義過濾功能或任何東西。 dc.js和Crossfilter知道該怎么做。 不幸的是，dc.js中似乎有一個帶有序數堆積條形圖的錯誤，所以你必須在此后正確地渲染渲染顏色條:-(也許Gordon會在這里提示一下。 

dc.renderAll();

function sel_stack(i) {
    return function(d) {
        return d.value[i] ? d.value[i].count : 0;
    };
}

由於更新的組結構導致輕微更改，如果您錯誤輸入其中一個項目鍵，則會有一點安全性。

解決方案2
 0  2016-10-28 19:23:49

我修復了彩色堆棧問題並將問題計算到我希望如何完成計數。 我正在使用D3.js verison 2.5.5，crossfilter.js版本1.3.11，以及版本2.1.0 dev的dc.js和dc.css。 https://jsfiddle.net/jnf84n7c/ 

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);

//dimensions and groups:
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 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;

//graphs:
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});
//bar.filterHandler(myFilterFunction);
//bar.on("renderlet", function(_chart){
//    _chart.selectAll("rect.bar").on("click", _chart.onClick);
//});

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)
//    .ordinalColors(["#008600", "#80FF80", "#FF80FF", "#860086"])
    .margins({top:30, left:50, right:10, bottom:50});
bar3.filterHandler(myFilterFunction);

dc.renderAll();  // render graphs

//reduce functions:
function reduceAdd(p, v) {
    if (v.items[0] === "") return p;    // skip empty values
    v.items.forEach (function(val, idx) {
        p[val] = (p[val] || 0) + 1; //increment counts
    });
    return p;
}
function reduceRemove(p, v) {
    if (v.items[0] === "") return p;    // skip empty values
    v.items.forEach (function(val, idx) {
        p[val] = (p[val] || 0) - 1; //decrement counts
    });
    return p;
}
function reduceInitial() {
    return {
        bread: 0,
        apple: 0,
        orange: 0,
        meat: 0
    };  
}
function reduceAdd1(p, v) {
    if (v.items[0] === "") return p;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    if (v.status[0] === "") return p;    // skip empty values
    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;    // skip empty values
    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;    // skip empty values
    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; 
}

//all function:
function myAllFunction() {
    var newObject = [];
    for (var key in this) {
        if (this.hasOwnProperty(key) && key != "all") {
            newObject.push({
                key: key,
                value: this[key]
            });
        }
    }
    return newObject;
};

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