我已将Mike Botock's Hierarchical Bar Chart转换为v4并进行了一些调整以满足我的需求（垂直，工具尖端，条形宽度适合画布等）。
现在我想把它变成一个堆积的条形图。在我的JSON文件中，我有两种类型的停机时间机器和模具。对于原始图表，我只是添加这些以获得我的整体但现在我想要堆叠它们并且我不确定如何在层次结构上执行root.sum之后单独将它们拉出来。这是我的第一张图表，原谅了一些编码，但随时可以纠正我。我也可以使用if语句清理一些东西但是我将所有内容分开，因为它更容易排除故障。任何关于如何制作堆叠分层条形图的想法将不胜感激。即使这意味着丢掉这些代码并重新开始。
<body>
<script src="d3.min.js"></script>
<script>
//canvas variables
var margin = { top: 30, right: 120, bottom: 300, left: 120 },
width = 960 - margin.left - margin.right,
height = 800 - margin.top - margin.bottom;
// scale y on canvas from largest number to 0
var y = d3.scaleLinear().range([height, 0]);
var barWidth;
var barPadding = 5;
var oldBarWidth = width;
var depth = 0;
var color = d3.scaleOrdinal()
.range(["steelblue", "#ccc"]);
var duration = 750,
delay = 25;
//attach SVG to body with canvas variables declared above
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 divTooltip = d3.select("body").append("div").attr("class", "toolTip");
//attach a rectangle to the entire background for drilling
svg.append("rect")
.attr("class", "background")
.attr("width", width)
.attr("height", height)
.on("click", drillUp);
//append axis to the SVG
svg.append("g")
.attr("class", "yaxis");
svg.append("g")
.append("line")
.attr("transform", "translate(0," + height + ")")
.attr("x1", width)
.attr("stroke", "black")
.attr("shape-rendering", "crispEdges");
//import JSON file
d3.json("data/drilljson2.json", function (error, root) {
if (error) throw error;
//declare root of the JSON file
root = d3.hierarchy(root);
//add all children in hierarchy and get value for all parents
root.sum(function (d) { return (+d.DieDowntime + (+d.MachineDowntime)); });
//scale the 'Y' domain/axis from 0 to root value
y.domain([0, root.value]).nice();
//call the drill down function
drillDown(root, 0);
drillDown(root.children[3], 3);
});
function drillDown(d, i) {
if (!d.children) return;
// get the number of children to parent and calculate barWidth and keep track of depth of drill down.
numChildNodes = d.children.length;
barWidth = (width / numChildNodes) - barPadding;
depth += 1;
var end = duration + numChildNodes * delay;
// Mark any currently-displayed bars as exiting.
var exit = svg.selectAll(".enter")
.attr("class", "exit");
// Entering nodes immediately obscure the clicked-on bar, so hide it.
exit.selectAll("rect").filter(function (p) { return p === d; })
.style("fill-opacity", 0);
// Enter the new bars for the clicked-on data.
// Entering bars are immediately visible.
var enter = drillDownBars(d)
.attr("transform", stackDown(i))
.attr("width", oldBarWidth)
.style("opacity", 1);
// Update the y-scale domain.
y.domain([0, d3.max(d.children, function (d) { return d.value; })]).nice();
// Have the text fade-in, even though the bars are visible.
// Color the bars as parents; they will fade to children if appropriate.
enter.select("text").style("fill-opacity", 0);
enter.select("rect").style("fill", color(true));
// Update the y-axis.
svg.selectAll(".yaxis").transition()
.duration(duration)
.call(d3.axisLeft(y));
// Transition entering bars to their new position.
var enterTransition = enter.transition()
.duration(duration)
.delay(function (d, i) { return i * delay; })
.style("opacity", 1)
.attr("transform", function (d, i) { var transBar = (barWidth +barPadding) * i +barPadding; return "translate("+ transBar + ")"; });
// Transition entering text.
enterTransition.select("text")
.attr("transform", function (d) { return "translate("+(barWidth/2)+","+((height+5) + 10 * depth)+")rotate(90)" })
// working .attr("y", height + 15)
.style("fill-opacity", 1);
// Transition entering rects to the new y-scale.
enterTransition.select("rect")
.attr("y", function (d) { return y(d.value); })
.attr("height", function (d) { return height - y(d.value); })
.attr("width",barWidth)
.style("fill", function (d) { return color(!!d.children); });
// Transition exiting bars to fade out.
var exitTransition = exit.transition()
.duration(duration)
.style("opacity", 0)
.remove();
// Transition exiting bars to the new y-scale.
exitTransition.selectAll("rect")
.attr("y", function (d) { return y(d.value); })
.attr("height", function (d) { return height - y(d.value); });
// Rebind the current node to the background.
svg.select(".background")
.datum(d)
.transition()
.duration(end);
d.index = i;
oldBarWidth = barWidth;
}
function drillUp(d) {
if (!d.parent || this.__transition__) return;
numChildNodes = d.parent.children.length;
barWidth = (width / numChildNodes) - barPadding;
depth -= 1;
var end = duration + d.children.length * delay;
// Mark any currently-displayed bars as exiting.
var exit = svg.selectAll(".enter")
.attr("class", "exit");
// Enter the new bars for the clicked-on data's parent.
var enter = drillUpBars(d.parent)
.attr("transform", function (d, i) {
transBarWidth = (barWidth + barPadding) * i + barPadding;
return "translate(" + transBarWidth + "," + 0 + ")";
})
.style("opacity", 0);
// Color the bars as appropriate.
// Exiting nodes will obscure the parent bar, so hide it.
enter.select("rect")
.style("fill", function (d) { return color(!!d.children); })
.filter(function (p) { return p === d; })
.style("fill-opacity", 0);
// Update the y-scale domain.
y.domain([0, d3.max(d.parent.children, function (d) { return d.value; })]).nice();
// Update the y-axis.
svg.selectAll(".yaxis").transition()
.duration(duration)
.call(d3.axisLeft(y));
// Transition entering bars to fade in over the full duration.
var enterTransition = enter.transition()
.duration(end)
.style("opacity", 1);
// Transition entering rects to the new y-scale.
// When the entering parent rect is done, make it visible!
enterTransition.select("rect")
.attr("y", function (d) { return y(d.value); })
.attr("height", function (d) { return height - y(d.value); })
.on("end", function (p) { if (p === d) d3.select(this).style("fill-opacity", null); });
// Transition entering text.
enterTransition.select("text")
.attr("transform", function (d) { return "translate("+(barWidth/2)+","+((height+5) + 10 * depth)+")rotate(90)" })
.style("fill-opacity", 1);
// Transition exiting bars to the parent's position.
var exitTransition = exit.selectAll("g").transition()
.duration(duration)
.delay(function (d, i) { return i * delay; })
.attr("transform", stackUp(d.index));
// Transition exiting text to fade out.
exitTransition.select("text")
.style("fill-opacity", 0);
// Transition exiting rects to the new scale and fade to parent color.
exitTransition.select("rect")
.attr("y", function (d) { return y(d.value); })
.attr("height", function (d) { return height - y(d.value); })
.attr("width", barWidth)
.style("fill", color(true));
// Remove exiting nodes when the last child has finished transitioning.
exit.transition()
.duration(end)
.remove();
// Rebind the current parent to the background.
svg.select(".background")
.datum(d.parent)
.transition()
.duration(end);
oldBarWidth = barWidth;
}
// Creates a set of bars for the given data node, at the specified index.
function drillUpBars(d) {
var bar = svg.insert("g")
.attr("class", "enter")
.selectAll("g")
.data(d.children)
.enter().append("g")
.style("cursor", function (d) { return !d.children ? null : "pointer"; })
.on("click", drillDown);
bar.append("text")
.attr("dx", ".35em")
.attr("text-anchor", "middle")
.attr("transform", function (d) { return "translate(" + barWidth / 2 + "," + (height + 15) + ") rotate(90)" })
.text(function (d) { return d.data.name; });
bar.append("rect")
.attr("y", function (d) { return y(d.value); } )
.attr("height", function (d) { return height - y(d.value); })
.attr("width", barWidth)
.attr("stroke-width", 1)
.attr("stroke", "white");
return bar;
}
function drillDownBars(d) {
var bar = svg.insert("g")
.attr("class", "enter")
.selectAll("g")
.data(d.children)
.enter().append("g")
.style("cursor", function (d) { return !d.children ? null : "pointer"; })
.on("click", drillDown)
.on("mouseover", mouseover)
.on("mousemove", function (d) {
divTooltip
.text(d.data.name +" " + d.value)
.style("left", (d3.event.pageX - 34) + "px")
.style("top", (d3.event.pageY - 30) + "px");
});
bar.append("text")
.attr("dx", ".35em")
.attr("text-anchor", "middle")
.attr("transform", function (d) { return "translate(" + barWidth / 2 + "," + (height + 15 - y(d.value)) + ") rotate(90)" })
.text(function (d) { return d.data.name; });
bar.append("rect")
.attr("height", function (d) { return height - y(d.value); })
.attr("width", oldBarWidth)
.attr("stroke-width", 1)
.attr("stroke", "white");
return bar;
}
//Creates a stack of bars
function stackDown(i) {
var x0 = (oldBarWidth + barPadding) * i + barPadding;
var y0 = height;
return function (d) {
y0 -= height - y(d.value);
var ty = "translate(" + x0 + "," + y0 + ")";
return ty;
};
}
//
function stackUp(i) {
var x0 = barWidth * i + (barPadding * (i + 1));
var y0 = 0;
return function (d) {
var ty = "translate(" + x0 + "," + y0 + ")";
y0 -= height - y(d.value);
return ty;
};
}
function mouseover() {
divTooltip.style("display", "inline");
}
</script>
这是JSON文件的一部分，现在也可以使用一点清洁但是细节。
{
"name" : "Down Time",
"children" : [{
"name" : "2013",
"children" : [{
"name" : "May 2013",
"children" : [{
"name" : "21 May 2013",
"children" : [{
"name" : "110",
"children" : [{
"MachineDowntime" : ".00000000000000000000",
"DieDowntime" : ".50000000000000000000"
}
]
}, {
"name" : "115",
"children" : [{
"MachineDowntime" : "5.23333333333333333300",
"DieDowntime" : ".00000000000000000000"
}
]
}
]
}, {
"name" : "22 May 2013",
"children" : [{
"name" : "115",
"children" : [{
"MachineDowntime" : "2.96666666666666666730",
"DieDowntime" : ".00000000000000000000"
}
]
}, {
"name" : "110",
"children" : [{
"MachineDowntime" : ".00000000000000000000",
"DieDowntime" : "10.36666666666666667000"