当小数的最后一个值为零时,该线在合成图中消失。我这里有密码笔
这是我的示例数据:
var data = [
{ "ID": 1, "TxDate": "2017/12/30", "InstCode": "Loc1", "NTS": 7, "NTS2": 1 },
{ "ID": 2, "TxDate": "2017/12/31", "InstCode": "Loc1", "NTS": 14, "NTS2": 6 },
{ "ID": 3, "TxDate": "2017/12/31", "InstCode": "Loc1", "NTS": 1, "NTS2": 1 },
{ "ID": 4, "TxDate": "2017/12/30", "InstCode": "Loc2", "NTS": 1, "NTS2": 1 },
{ "ID": 5, "TxDate": "2018/01/02", "InstCode": "Loc2", "NTS": 2, "NTS2": 1 },
{ "ID": 6, "TxDate": "2018/01/02", "InstCode": "Loc2", "NTS": 1, "NTS2": 1 },
{ "ID": 7, "TxDate": "2018/01/03", "InstCode": "Loc1", "NTS": 3, "NTS2": 4 },
{ "ID": 8, "TxDate": "2018/01/03", "InstCode": "Loc1", "NTS": 1, "NTS2": 1 },
{ "ID": 9, "TxDate": "2018/01/04", "InstCode": "Loc1", "NTS": 1, "NTS2": 1 },
{ "ID": 10, "TxDate": "2018/01/02", "InstCode": "Loc2", "NTS": 4, "NTS2": 1 },
{ "ID": 11, "TxDate": "2018/01/03", "InstCode": "Loc1", "NTS": 22, "NTS2": 14 },
{ "ID": 12, "TxDate": "2018/01/02", "InstCode": "Loc1", "NTS": 2, "NTS2": 0 },
{ "ID": 13, "TxDate": "2018/01/04", "InstCode": "Loc2", "NTS": 0, "NTS2": 0 },
{ "ID": 14, "TxDate": "2018/01/04", "InstCode": "Loc2", "NTS": 0, "NTS2": 0 },
{ "ID": 15, "TxDate": "2018/02/04", "InstCode": "Loc2", "NTS": 0, "NTS2": 3 }
];
var yearPieChart = dc.pieChart("#year-pie-chart");
var monthBarChart = dc.barChart("#month-bar-chart");
var composite = dc.compositeChart('#compo-bar-line-chart');
问题是,当“ NTS”的最后一个值:1出现时,组合图就会出现。如果我更改下面的行
{ "ID": 15, "TxDate": "2018/02/04", "InstCode": "Loc2", "NTS": 0, "NTS2": 3 }
至
{ "ID": 15, "TxDate": "2018/02/04", "InstCode": "Loc2", "NTS": 1, "NTS2": 3 }
出现合成图。即使值“ NTS”,也可以通过任何方式显示图表:0非常感谢您的帮助。
复合条码:
composite
.width(1200).height(450)
.margins({ top: 20, bottom: 90, right: 10, left: 70 })
.x(d3.scale.ordinal().domain(nonEmptytxNTSGroup))
.xUnits(dc.units.ordinal)
//.xAxisLabel('Date')
.yAxisLabel("NTS")
.elasticX(true)
.elasticY(true)
//.rightYAxisLabel('Final Treatments')
.group(nonEmptytxNTSGroup)
.renderLabel(true)
._rangeBandPadding(1)
.compose(
[
dc.barChart(composite)
.gap(1)
.centerBar(true)
.group(nonEmptytxNTSGroup)
.elasticX(true)
.elasticY(true)
.renderLabel(true),
dc.lineChart(composite)
.group(nonEmptytxFinalTxGroup)
.useRightYAxis(false)
.colors('red')
.elasticX(true)
.elasticY(true)
.renderDataPoints({
radius: 10,
fillOpacity: 5.5,
strokeOpacity: 5.8
})
.renderLabel(true)
]
);
composite.renderlet(function (composite) {
composite.selectAll("g.x text")
.attr('dx', '-35')
//.select("g.axis.y")
//.attr("transform", "rotate(-45)");
.attr('transform', "translate(-10,0) rotate(-65)");
});
在复合图表中,所有子图表将共享相同的X比例尺。这由指定给父(综合)图表的组确定。
在您的示例中,您将条形图的组用于复合图组。如果折线图的组中的任何键不在条形图的组中,则它拒绝绘制。(具体来说,NaN
对于刻度中不存在的X值,它最后在行中以s开头,然后进行完整性检查将其重置为空行。)
解决此问题的最简单方法是不使用remove_empty_bins
。然后,两个图表的域将始终匹配。
更复杂但可以说更可靠的方法是使用通常用于堆叠图表的解决方案,其中所有堆叠也必须在其X域中匹配。
function combine_groups() { // (groups...)
var groups = Array.prototype.slice.call(arguments);
return {
all: function() {
var alls = groups.map(function(g) { return g.all(); });
var gm = {};
alls.forEach(function(a, i) {
a.forEach(function(b) {
if(!gm[b.key]) {
gm[b.key] = new Array(groups.length);
for(var j=0; j<groups.length; ++j)
gm[b.key][j] = 0;
}
gm[b.key][i] = b.value;
});
});
var ret = [];
for(var k in gm)
ret.push({key: k, value: gm[k]});
return ret;
}
};
}
从非空组生成一个组合组,如下所示:
var combined = combine_groups(nonEmptytxNTSGroup, nonEmptytxFinalTxGroup);
将其提供给组合图以设置公共域:
composite
// ...
.group(combined)
告诉每个子图表从组合值之一中提取其值:
.compose(
[
dc.barChart(composite)
// ...
.group(combined, "1", function(kv) { return kv.value[0]; })
// ...
dc.lineChart(composite)
.group(combined, "2", function(kv) { return kv.value[1]; })
// ...
]
现在你有其中会使用到的复合图表工会两个非空组的域。请注意,这还将强制子图表具有相同的域:任何跳过的值现在都将设置为0:
这里的最后一个柱为零,但仍绘制其0标签,因为折线图在那里具有非零值。
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我来说两句