I'm trying to render a stacked bar chart from a multidimensional array that is grouped together by stack, and I can't figure out how to configure the y and height values of each rectangle. The tutorial I've been going off is here, but their data structure varies greatly from mine. I believe the solution is in how the y0 and y1 values are determined, but being a novice in D3 I'm unable to discern how it's being computed in the tutorial.
我正在尝试从堆栈组合在一起的多维数组渲染堆积条形图,我无法弄清楚如何配置每个矩形的y和高度值。我一直在这里的教程就在这里,但他们的数据结构与我的差异很大。我相信解决方案是如何确定y0和y1值,但在D3中是一个新手我无法辨别它是如何在教程中计算的。
Here's what I have so far (the returned data from the data and legendLabels variables is at the top:
这是我到目前为止(数据和legendLabels变量返回的数据位于顶部:
data = [["Privés dans les trois dimensions","30.2"],["Privés dans une dimension additionelle","24.4"],["Privés seulement dans la dimension spécifiée","8.32"],["Privés dans les trois dimensions","30.2"],["Privés dans une dimension additionelle","26.1"],["Privés seulement dans la dimension spécifiée","3.75"],["Privés dans les trois dimensions","30.2"],["Privés dans une dimension additionelle","33.1"],["Privés seulement dans la dimension spécifiée","10.4"]]
legendLabels = ["Nutrition","Santé","Eau"];
var $chart = $(chart),
data = $chart.data("chartDataTest"),
legendLabels = $chart.data("chartLabels"),
groupedData = [];
$.each(legendLabels, function(i){
var labelLength = legendLabels.length,
dataLength = data.length;
var sliceBeginning = i * labelLength,
sliceEnd = sliceBeginning + labelLength;
dataRange = data.slice(sliceBeginning, sliceEnd);
groupedData.push(dataRange);
});
var yValues = [];
$.each(groupedData, function(i, dataGroup){
var subGroupY = 0;
$.each(dataGroup, function(ii, dataSubGroup){
subGroupY += +dataSubGroup[1];
});
yValues.push(subGroupY);
});
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var x0 = d3.scale.ordinal()
.rangeRoundBands([0, width], 0.1);
var y = d3.scale.linear()
.rangeRound([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(d3.format(".2s"));
var svg = d3.select(chart).append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("class", "parent-group")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
x.domain(legendLabels.map(function(d) { return d; }));
x0.domain(groupedData.map(function(d) { return d; }));
y.domain([0, d3.max(yValues, function(d) { return d; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
var group = svg
.selectAll(".group")
.data(groupedData)
.enter()
.append("g")
.attr("class", "g")
.attr("transform", function(d) {
return "translate(" + x0(d) + ",0)";
});
var yPosition = 0;
group
.selectAll(".group")
.data(function(d) { return d; })
.enter()
.append("rect")
.attr("width", x.rangeBand())
.attr("y", function(d, i) {
return y(d[1]);
})
.attr("height", function(d) {
return y(d[1]);
});
Here's what my chart looks like so far:
这是我的图表到目前为止的样子:
1 个解决方案
#1
0
Per @CoolBlue's suggestion, I rerefactored this to use d3's stack
function. I based my new approach on this tutorial. Here's the updated code:
按照@ CoolBlue的建议,我重新考虑使用d3的堆栈功能。我的新方法基于本教程。这是更新的代码:
var $chart = $(chart),
data = $chart.data("chartDataTest"),
chartStacks = $chart.data("chartLabels"),
groupedData = [],
colors = [];
var width = 900,
height = 500,
margin = { top: 10, right: 50, bottom: 30, left: 50},
x = d3.scale.ordinal().rangeRoundBands([0, width - margin.left - margin.right]),
x0 = d3.scale.ordinal().rangeRoundBands([0, width - margin.left - margin.right], 0.1),
y = d3.scale.linear().range([0, height - margin.top - margin.bottom]);
y0 = d3.scale.linear().range([height - margin.top - margin.bottom, 0]);
var xAxis = d3.svg.axis()
.scale(x0)
.orient("bottom"),
yAxis = d3.svg.axis()
.scale(y0)
.orient("left")
.tickFormat(d3.format(".2s"));
$.each(chartStacks, function(i){
var labelLength = chartStacks.length,
dataLength = data.length;
var sliceBeginning = i,
dataRange = data.slice(sliceBeginning);
colorGroup = [];
$.each(dataRange, function(ii, colorData){
if ( ii % labelLength == 0) {
colorGroup.push(colorData[1]);
}
});
var remappedValues = colorGroup.map(function(dat, i) {
return {
x: i,
y: +dat
}
});
var remappedColors = dataRange.map(function(dat, i) {
return dat[0];
});
colors.push(remappedColors[0]);
groupedData.push(remappedValues);
});
var stacked = d3.layout.stack()(groupedData);
x0.domain(chartStacks.map(function(d) { return d; }));
x.domain(stacked[0].map(function(d) { return d.x; }));
y.domain([0, d3.max(stacked[stacked.length - 1], function(d) { return d.y0 + d.y; })]);
y0.domain([0, d3.max(data, function(d) { return 90; })]);
var svg = d3.select(chart).append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + margin.left + "," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + margin.left + ", " + 46 + ")")
.call(yAxis);
var svgContent = svg
.append("g")
.attr("class", "parent-group")
.attr("transform", "translate(" + margin.left + "," + height + ")");
var valGroup = svgContent
.selectAll(".parent-group")
.data(stacked)
.enter()
.append("g")
.attr("class", "valgroup");
var rect = valGroup.selectAll("rect")
.data(function(d){return d;})
.enter().append("svg:rect")
.attr("x", function(d) { return x(d.x); })
.attr("y", function(d) { return -y(d.y0) - y(d.y); })
.attr("height", function(d) { return y(d.y); })
.attr("width", x.rangeBand() - 15);
#1
0
Per @CoolBlue's suggestion, I rerefactored this to use d3's stack
function. I based my new approach on this tutorial. Here's the updated code:
按照@ CoolBlue的建议,我重新考虑使用d3的堆栈功能。我的新方法基于本教程。这是更新的代码:
var $chart = $(chart),
data = $chart.data("chartDataTest"),
chartStacks = $chart.data("chartLabels"),
groupedData = [],
colors = [];
var width = 900,
height = 500,
margin = { top: 10, right: 50, bottom: 30, left: 50},
x = d3.scale.ordinal().rangeRoundBands([0, width - margin.left - margin.right]),
x0 = d3.scale.ordinal().rangeRoundBands([0, width - margin.left - margin.right], 0.1),
y = d3.scale.linear().range([0, height - margin.top - margin.bottom]);
y0 = d3.scale.linear().range([height - margin.top - margin.bottom, 0]);
var xAxis = d3.svg.axis()
.scale(x0)
.orient("bottom"),
yAxis = d3.svg.axis()
.scale(y0)
.orient("left")
.tickFormat(d3.format(".2s"));
$.each(chartStacks, function(i){
var labelLength = chartStacks.length,
dataLength = data.length;
var sliceBeginning = i,
dataRange = data.slice(sliceBeginning);
colorGroup = [];
$.each(dataRange, function(ii, colorData){
if ( ii % labelLength == 0) {
colorGroup.push(colorData[1]);
}
});
var remappedValues = colorGroup.map(function(dat, i) {
return {
x: i,
y: +dat
}
});
var remappedColors = dataRange.map(function(dat, i) {
return dat[0];
});
colors.push(remappedColors[0]);
groupedData.push(remappedValues);
});
var stacked = d3.layout.stack()(groupedData);
x0.domain(chartStacks.map(function(d) { return d; }));
x.domain(stacked[0].map(function(d) { return d.x; }));
y.domain([0, d3.max(stacked[stacked.length - 1], function(d) { return d.y0 + d.y; })]);
y0.domain([0, d3.max(data, function(d) { return 90; })]);
var svg = d3.select(chart).append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + margin.left + "," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + margin.left + ", " + 46 + ")")
.call(yAxis);
var svgContent = svg
.append("g")
.attr("class", "parent-group")
.attr("transform", "translate(" + margin.left + "," + height + ")");
var valGroup = svgContent
.selectAll(".parent-group")
.data(stacked)
.enter()
.append("g")
.attr("class", "valgroup");
var rect = valGroup.selectAll("rect")
.data(function(d){return d;})
.enter().append("svg:rect")
.attr("x", function(d) { return x(d.x); })
.attr("y", function(d) { return -y(d.y0) - y(d.y); })
.attr("height", function(d) { return y(d.y); })
.attr("width", x.rangeBand() - 15);