所以我创建了一个D3堆积条形图，但我似乎无法弄清楚如何使条形图的值显示在图表上。我可以向每个栏显示Text“Sample”，但我无法弄清楚如何检索数据。我尝试使用这个... .text（function（d）{return d.total;}）但没有运气。
jfiddle here .... http://jsfiddle.net/rasweat/D3ErQ/1/
<script src="http://d3js.org/d3.v3.js"></script>
<script type="text/javascript">
var margin = {top: 60, right: 20, bottom: 100, left: 100},
width = 600 - margin.left - margin.right,
height = 400 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangeRoundBands([0, width-100], .1); //width-100 to make room for the legend.
var y = d3.scale.linear()
.rangeRound([height, 0]);
var color = d3.scale.ordinal()
//.range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
.range(["#1f77b4", "#ff7f0e","d62728"]); //blue, orange, red
//color code for Progress Report
//.range(["#00FFFF","#00FF00","#990099","#FF0000","#FFFF00"]);
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("#area_progress_report").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 + ")");
// Get the data
//var data = [{"Commodity":"Base","num_complete_print":"3","num_incomplete_print":15},{"Commodity":"Blade","num_complete_print":"1","num_incomplete_print":53},{"Commodity":"DTE","num_complete_print":"1","num_incomplete_print":17},{"Commodity":"HUB","num_complete_print":"0","num_incomplete_print":"18"},{"Commodity":"MH","num_complete_print":"0","num_incomplete_print":"18"},{"Commodity":"Mid","num_complete_print":"0","num_incomplete_print":18},{"Commodity":"Top","num_complete_print":"0","num_incomplete_print":18}];
var data = <?php echo json_encode($dataset_progress001); ?>;
//alert(data);
//d3.csv("data.csv", function(error, data) {
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "Commodity"; }));
data.forEach(function(d) {
var y0 = 0;
d.ages = color.domain().map(function(name) { return {name: name, y0: y0, y1: y0 += +d[name]}; });
d.total = d.ages[d.ages.length - 1].y1;
});
//use this to sort the bars from largest to smallest
//data.sort(function(a, b) { return b.total - a.total; });
x.domain(data.map(function(d) { return d.Commodity; }));
y.domain([0, d3.max(data, function(d) { return d.total; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text") //added this line through rotate to change orientation of x axis
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", "-1em")
.attr("transform", function(d) {
return "rotate(-90)"
});
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end");
// .text("Population");
//grid lines y.ticks controls the number of lines
svg.selectAll("line.horizontalGrid").data(y.ticks(10)).enter()
.append("line")
.attr(
{
"class":"horizontalGrid",
"x1" : 0,
"x2" : width-60,
"y1" : function(d){ return y(d);},
"y2" : function(d){ return y(d);},
"fill" : "none",
"shape-rendering" : "crispEdges",
"stroke" : "grey",
"stroke-width" : "1px"
});
var state = svg.selectAll(".state")
.data(data)
.enter().append("g")
.attr("class", "g")
.attr("transform", function(d) { return "translate(" + x(d.Commodity) + ",0)"; });
state.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x.rangeBand())
.attr("y", function(d) { return y(d.y1); })
.attr("height", function(d) { return y(d.y0) - y(d.y1); })
.style("fill", function(d) { return color(d.name); });
var legend = svg.selectAll(".legend")
.data(color.domain().slice().reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d; });
//Added y label 10/28
svg.append("text")
.attr("class", "y label")
.attr("text-anchor", "end")
.attr("y", -60)
.attr("x",-70)
.attr("dy", ".75em")
.attr("transform", "rotate(-90)")
.text("Number Of Components");
//Add Title
svg.append("text")
.attr("x", (width/2) )//(width / 2))
.attr("y", -20) //0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "20px")
.style("text-decoration", "underline")
.text("Inspection Progress Report");
state.selectAll("text")
.data(function(d) { return d.ages; })
.enter()
.append("text")
.attr("x", x.rangeBand()/2)
.attr("y", function(d, i) { return y(d.y1) + (y(d.y0) - y(d.y1))/2; })
.style("text-anchor", "middle")
//.text(function(d) {return d.total; })
.text("sample")
</script>
答案 0 :(得分：1)
你必须改变这一行
.data(function(d) { return d.ages; })
实际提供data()您的数据。如果你有一个名为ages的所有年龄的数组，那么它将是：
.data(ages)
d中的function(d)参数引用了任何内容，因为data()实际上是您输入数据的方法。