[英]d3js set X axis tick position
I am create a bar chart with help of bl.ocks.org/Caged/6476579 example . 我借助于bl.ocks.org/Caged/6476579 example创建条形图。 but the problem is if only one record present in csv then bar width takes full svg width ,please see image 但问题是如果csv中仅存在一条记录,则条形宽度占据了整个svg宽度,请参见图片
Then I think to give a fix width to bar ,I add .attr("width", d3.min([x1.rangeBand(), 100]))
然后我想给bar固定宽度,我添加.attr("width", d3.min([x1.rangeBand(), 100]))
after adding this bar width reduced ,but x axis tick position displaced 添加此条后,宽度减小,但x轴刻度位置偏移
how to place the tick ? 如何放置刻度线?
Index.html 的index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.bar {
fill: orange;
}
.bar:hover {
fill: orangered ;
}
.x.axis path {
display: none;
}
.d3-tip {
line-height: 1;
font-weight: bold;
padding: 12px;
background: rgba(0, 0, 0, 0.8);
color: #fff;
border-radius: 2px;
}
/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
box-sizing: border-box;
display: inline;
font-size: 10px;
width: 100%;
line-height: 1;
color: rgba(0, 0, 0, 0.8);
content: "\25BC";
position: absolute;
text-align: center;
}
/* Style northward tooltips differently */
.d3-tip.n:after {
margin: -1px 0 0 0;
top: 100%;
left: 0;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
<script>
var margin = {top: 40, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var formatPercent = d3.format(".0%");
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(formatPercent);
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-10, 0])
.html(function(d) {
return "<strong>Frequency:</strong> <span style='color:red'>" + d.frequency + "</span>";
})
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 + ")");
svg.call(tip);
d3.tsv("data.tsv", type, function(error, data) {
x.domain(data.map(function(d) { return d.letter; }));
y.domain([0, d3.max(data, function(d) { return d.frequency; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
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("Frequency");
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return x(d.letter); })
//.attr("width", x.rangeBand())
.attr("width", d3.min([x.rangeBand(), 100]))
.attr("y", function(d) { return y(d.frequency); })
.attr("height", function(d) { return height - y(d.frequency); })
.on('mouseover', tip.show)
.on('mouseout', tip.hide)
});
function type(d) {
d.frequency = +d.frequency;
return d;
}
</script>
data.tsv data.tsv
letter frequency
A .08167
If you do this: 如果您这样做:
.attr("width", d3.min([x1.rangeBand(), 100]))
You may end up having a bar with 100px of width. 您最终可能会遇到宽度为100px的条形图。 However, this does not change the axis. 但是,这不会更改轴。
The axis generator generates the axis based on the scale . 轴生成器根据比例生成轴。 Thus, whatever changes you want, do them in the scale. 因此,无论您要进行什么更改,都应按比例进行。
For instance, this makes the range smaller (one fourth of the total width) and increases the padding: 例如,这使范围变小(占总宽度的四分之一)并增加了填充:
var x = d3.scale.ordinal()
.rangeRoundBands([0, width/4], .5);
Here is the modified bl.ocks: http://bl.ocks.org/anonymous/01b29d42b70e4f6717f7e529f4210a93 这是修改后的bl.ocks: http ://bl.ocks.org/anonymous/01b29d42b70e4f6717f7e529f4210a93
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