[英]d3.js Bar Chart - No Y Axis scale
I have a d3.js bar chart, but the X axis columns have no height, presumably because there is no data/scale for the Y axis.我有一个 d3.js 条形图,但 X 轴列没有高度,大概是因为 Y 轴没有数据/比例。 The last column should display.最后一列应显示。
The JSON: JSON:
[{"Domain":"Knowledge","Knowledge":0},{"Domain":"Problem Solving","problem_solving":0},{"Domain":"Skill","skill":0},{"Domain":"Transferable","transferable":100}]
The chart:图表:
var margin = {top: 50, right: 135, bottom: 70, left: 80},
width = 1050 - margin.left - margin.right,
height = 540 - margin.top - margin.bottom;
var svg = d3.select("#domains")
.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 + ")");
// load the data
d3.json("json/domains.json", function(error, data) {
// Transpose the data into layers
var dataset = d3.layout.stack()(["Knowledge", "Problem Solving, Skill, Transferable"].map(function(lvl) {
return data.map(function(d) {
return {
x: d.Domain,
y: d[lvl]
};
});
}));
var disciplines = d3.nest()
.key(function(d){return d.Domain})
.rollup(function(leaves){
return d3.sum(leaves, function(d) {return d3.sum(d3.values(d))});
})
.entries(data);
// Set x, y and colors
var x = d3.scale.ordinal()
.domain(dataset[0].map(function(d) { return d.x; }))
.rangeRoundBands([10, width-10], 0.35, 0);
var y = d3.scale.linear()
.domain([0, d3.max(dataset, function(d) { return d3.max(d, function(d) { return d.y0 + d.y; }); })])
.range([height, 0]);
var colors = ["#83d1c4", "#f17950", "#838BD1", "#F150BE"];
// Define and draw axes
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5)
.tickSize(-width, 0, 0)
.tickFormat(function(d) {
return d;
});
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.outerTickSize(0)
d3.select('.y axis .tick:first-child').remove();
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-0, 0])
.html(function(d) {
return d.y + '%';
})
svg.call(tip);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(0,0)")
.call(yAxis);
svg.append("g")
.call(xAxis)
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("text")
.attr("x", 390 )
.attr("y", 480 )
.style("text-anchor", "middle")
.text("Disciplines");
svg.append("text")
.attr("x", -200 )
.attr("y", -40 )
.attr("transform", "rotate(-90)" )
.attr('style', 'font-size:12px')
.style("text-anchor", "middle")
.text("Percentage of Learning Events");
// Create groups for each series, rects for each segment
var groups = svg.selectAll("g.group")
.data(dataset)
.enter().append("g")
.attr("class", "group")
.style("fill", function(d, i) { return colors[i]; });
// var svg = d3.select("svg");
var bar = groups.selectAll("g")
.data(function(d) { return d; })
.enter().append("g")
.attr("transform", function(d, i) {
return "translate(" + x(d.x) + ", 0)";
});
var sum=0;
bar.append("rect")
.attr("y", function(d) { return y(d.y0 + d.y); })
.attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); })
.attr('class', 'segment')
.attr("width", x.rangeBand())
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
columns = svg.append("g")
.selectAll("text").data(disciplines)
.enter().append("text")
.attr("x", function(d){
return x(d.key) + x.rangeBand()/2
})
.attr("y", function (d) {
return y(d.values);
})
.attr("dy", "-0.7em")
.attr('style', 'font-size:11px')
.text( function (d){
return d3.format(".2f")(d.values) + '%';
})
.style({fill: 'black', "text-anchor": "middle"});
// Draw legend
var legend = svg.selectAll(".legend")
.data(colors)
.enter().append("g")
.attr("class", "legend")
.attr('style', 'font-size:12px')
.attr("transform", function(d, i) {
return "translate(30," + i * 19 + ")";
});
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", function(d, i) {return colors.slice().reverse()[i];});
legend.append("text")
.attr("x", width + 5)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "start")
.text(function(d, i) {
switch (i) {
case 0:
return "Knowledge";
case 1:
return "Problem Solving";
case 2:
return "Skill";
case 3:
return "Transferable";
}
});
});
I have another d3.js chart, which uses practically the same chart code as above and JSON format, just the data is different, columns and Y axis graduations show OK:我还有另一个d3.js图表,它使用与上面几乎相同的图表代码和JSON格式,只是数据不同,列和Y轴刻度显示OK:
UPDATE更新
Changed 'Domain' key in the JSON to 'Dom' so as not to cause any conflict with the d3.js function .domain
(makes no difference to the chart though...):将 JSON 中的 'Domain' 键更改为 'Dom',以免与 d3.js function .domain
造成任何冲突:
JSON: JSON:
[{"Dom":"Knowledge","Knowledge":0},{"Dom":"Problem Solving","problem_solving":0},{"Dom":"Skill","skill":0},{"Dom":"Transferable","transferable":100}]
Chart:图表:
var margin = {top: 50, right: 135, bottom: 70, left: 80},
width = 1050 - margin.left - margin.right,
height = 540 - margin.top - margin.bottom;
var svg = d3.select("#domains")
.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 + ")");
// load the data
d3.json("json/domains.json", function(error, data) {
// Transpose the data into layers
var dataset = d3.layout.stack()(["Knowledge", "Problem Solving", "Skill", "Transferable"].map(function(lvl) {
return data.map(function(d) {
return {
x: d.Dom,
y: d[lvl]
};
});
}));
var domains = d3.nest()
.key(function(d){return d.Dom})
.rollup(function(leaves){
return d3.sum(leaves, function(d) {return d3.sum(d3.values(d))});
})
.entries(data);
// Set x, y and colors
var x = d3.scale.ordinal()
.domain(dataset[0].map(function(d) { return d.x; }))
.rangeRoundBands([10, width-10], 0.35, 0);
var y = d3.scale.linear()
.domain([0, d3.max(dataset, function(d) { return d3.max(d, function(d) { return d.y0 + d.y; }); })])
.range([height, 0]);
var colors = ["#50E0C8", "#f17950", "#C283D1", "#50BCF1"];
// Define and draw axes
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5)
.tickSize(-width, 0, 0)
.tickFormat(function(d) {
return d;
});
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.outerTickSize(0)
d3.select('.y axis .tick:first-child').remove();
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-0, 0])
.html(function(d) {
return d.y + '%';
})
svg.call(tip);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(0,0)")
.call(yAxis);
svg.append("g")
.call(xAxis)
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("text")
.attr("x", 390 )
.attr("y", 480 )
.style("text-anchor", "middle")
.text("Domains");
svg.append("text")
.attr("x", -200 )
.attr("y", -40 )
.attr("transform", "rotate(-90)" )
.style("text-anchor", "middle")
.text("Percentage of Learning Events");
// Create groups for each series, rects for each segment
var groups = svg.selectAll("g.group")
.data(dataset)
.enter().append("g")
.attr("class", "group")
.style("fill", function(d, i) { return colors[i]; });
// var svg = d3.select("svg");
var bar = groups.selectAll("g")
.data(function(d) { return d; })
.enter().append("g")
.attr("transform", function(d, i) {
return "translate(" + x(d.x) + ", 0)";
});
var sum=0;
bar.append("rect")
.attr("y", function(d) { return y(d.y0 + d.y); })
.attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); })
.attr('class', 'segment')
.attr("width", x.rangeBand())
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
columns = svg.append("g")
.selectAll("text").data(domains)
.enter().append("text")
.attr("x", function(d){
return x(d.key) + x.rangeBand()/2
})
.attr("y", function (d) {
return y(d.values);
})
.attr("dy", "-0.7em")
.attr('style', 'font-size:11px')
.text( function (d){
return d3.format(".2f")(d.values) + '%';
})
.style({fill: 'black', "text-anchor": "middle"});
});
Fixed some errors and simplified your code.修复了一些错误并简化了您的代码。 See it working in the fiddle:看到它在小提琴中工作:
var margin = {top: 50, right: 135, bottom: 70, left: 80}, width = 1050 - margin.left - margin.right, height = 540 - margin.top - margin.bottom; var svg = d3.select("#domains").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 + ")"); // load the data const data = [{"Domain":"Knowledge","knowledge":0},{"Domain":"Problem Solving","problem_solving":0},{"Domain":"Skill","skill":0},{"Domain":"Transferable","transferable":100}]; const normalized = data.map(item => { const name = item['Domain']; const attr = name.toLowerCase().replace(' ', '_'); const value = item[attr]; return {name, value}; }); console.log('N: ', normalized); /* // Transpose the data into layers var dataset = d3.layout.stack()(["Knowledge", "Problem Solving, Skill, Transferable"].map(function(lvl) { return data.map(function(d) { return { x: d.Domain, y: d[lvl] }; }); })); var disciplines = d3.nest().key(function(d){return d.Domain}).rollup(function(leaves){ return d3.sum(leaves, function(d) {return d3.sum(d3.values(d))}); }).entries(data); */ // Set x, y and colors var x = d3.scale.ordinal().domain(normalized.map(item => item.name)).rangeRoundBands([10, width-10], 0.35, 0); const maxValue = normalized.reduce((max, item) => Math.max(max, item.value), 0); var y = d3.scale.linear().domain([0, maxValue]).range([height, 0]); var colors = ["#83d1c4", "#f17950", "#838BD1", "#F150BE"]; // Define and draw axes var yAxis = d3.svg.axis().scale(y).orient("left").ticks(5).tickSize(-width, 0, 0).tickFormat(function(d) { return d; }); var xAxis = d3.svg.axis().scale(x).orient("bottom").outerTickSize(0) d3.select('.y axis.tick:first-child').remove(); /* var tip = d3.tip().attr('class', 'd3-tip').offset([-0, 0]).html(function(d) { return dy + '%'; }) svg.call(tip); */ svg.append("g").attr("class", "y axis").attr("transform", "translate(0,0)").call(yAxis); svg.append("g").call(xAxis).attr("class", "x axis").attr("transform", "translate(0," + height + ")").call(xAxis); svg.append("text").attr("x", 390 ).attr("y", 480 ).style("text-anchor", "middle").text("Disciplines"); svg.append("text").attr("x", -200 ).attr("y", -40 ).attr("transform", "rotate(-90)" ).attr('style', 'font-size:12px').style("text-anchor", "middle").text("Percentage of Learning Events"); // Create groups for each series, rects for each segment var groups = svg.selectAll("g.group").data(normalized).enter().append("g").attr("class", "group").style("fill", function(d, i) { return colors[i]; }); groups.append("rect").attr("y", function(d) { return y(d.value); }).attr("x", d => x(d.name)).attr("height", function(d) { return y(0) - y(d.value); }).attr('class', 'segment').attr("width", x.rangeBand()) //.on('mouseover', tip.show) //.on('mouseout', tip.hide); columns = svg.append("g").selectAll("text").data(normalized).enter().append("text").attr("x", function(d){ return x(d.name) + x.rangeBand()/2 }).attr("y", function (d) { return y(d.value); }).attr("dy", "-0.7em").attr('style', 'font-size:11px').text( function (d){ return d3.format(".2f")(d.value) + '%'; }).style({fill: 'black', "text-anchor": "middle"}); // Draw legend var legend = svg.selectAll(".legend").data(colors).enter().append("g").attr("class", "legend").attr('style', 'font-size:12px').attr("transform", function(d, i) { return "translate(30," + i * 19 + ")"; }); legend.append("rect").attr("x", width - 18).attr("width", 18).attr("height", 18).style("fill", function(d, i) {return colors.slice().reverse()[i];}); legend.append("text").attr("x", width + 5).attr("y", 9).attr("dy", ".35em").style("text-anchor", "start").text(function(d, i) { switch (i) { case 0: return "Knowledge"; case 1: return "Problem Solving"; case 2: return "Skill"; case 3: return "Transferable"; } });
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script> <div id="domains" />
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.