我有一些数据需要放入条形图中，数据应根据所选日期进行更新。 该图表应显示所选周数的7天数据。
我在页面上有一个日期分页，当我移动到前一周时，我希望那个星期的数据在条形图上显示
我在plunker上的代码是@ https://plnkr.co/edit/raVy7y3KcOX757jcy3pL?p=preview
我的代码：
的index.html
<!DOCTYPE html>
<html>
<head>
<style>
.chart {
background: #eee;
padding: 3px;
}
.chart div {
width: 0;
transition: all 1s ease-out;
-moz-transition: all 1s ease-out;
-webkit-transition: all 1s ease-out;
}
.chart div {
font: 10px sans-serif;
background-color: steelblue;
text-align: right;
padding: 3px;
margin: 5px;
color: white;
box-shadow: 2px 2px 2px #666;
}
.bar {
fill: steelblue;
}
.bar:hover {
fill: blue ;
}
.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;
}
ul {
width: 800px;
}
li {
float: left;
list-style: none;
margin: 25px;
/*border-bottom: 1px solid grey;*/
}
input {
width: 100%;
/*margin-top: 12px;
margin-bottom: 12px;*/
padding: 24px;
}
.event__container {
width: 100%;
height: 100px;
}
.date {
float: left;
width: 100%;
background-color: grey;
text-align: center;
color: grey;
font-weight: 700;
margin-left: 0;
margin: 0;
padding: 12px;
color: white;
}
</style>
</head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
<script type="text/javascript" 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 src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.3/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.13.0/moment.min.js"></script>
<script src="main.js"></script>
<body>
<div ng-app="myApp" ng-controller="Ctrl">
<div>
<h2><i class="fa fa-arrow-left"></i>Week Of {{currentWeekStart()}} - {{currentWeekEnd()}}<i class="fa fa-arrow-right"></i></h2>
<button ng-click="prevWeek()">previous week</button>
<button ng-click="nextWeek()">next week</button>
</div>
<cr-d3-bars data='myData'></cr-d3-bars>
</div>
<script>
$('.filter').click(function() {
$(this).toggleClass('clicked');
});
</script>
</script>
</body>
</html>
main.js
angular.module( 'myApp',[]).directive( 'crD3Bars', [
function () {
return {
restrict: 'E',
scope: {
data: '='
},
link: function (scope, element) {
scope.data.forEach(function(d) {
d.name = d.name._i;
d.value = +d.value;
//console.log(d.name, d.value)
});
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 800 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var svg = d3.select(element[0])
.append("svg")
.attr('width', 800)
.attr('height', 800)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
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")
.ticks(10);
//For tool tip
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-10, 0])
.html(function(d) {
return "<span style='color:red'>" + d.date, d.value + "</span>";
});
svg.call(tip);
//Render graph based on 'data'
scope.render = function(data) {
//Set our scale's domains
x.domain(data.map(function(d) { return d.name; }));
y.domain([0, d3.max(data, function(d) { return d.value; })]);
//Redraw the axes
svg.selectAll('g.axis').remove();
//X axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", "-.55em")
.attr("transform", "rotate(-60)" );
//Y axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".55em")
.attr("transform", "rotate(-90)" )
.style("text-anchor", "end")
.text("value");
var bars = svg.selectAll(".bar").data(data);
bars.enter()
.append("rect")
.attr("class", "bar")
.attr("x", function(d) { return x(d.name); })
.attr("width", x.rangeBand())
.attr('height', function(d) { return height - y(d.value); })
.attr("y", function(d) { return y(d.value); })
.on('mouseover', tip.show)
.on('mouseout', tip.hide)
//Animate bars
// bars
// .transition()
// .duration(1000)
// .attr('height', function(d) { return height - y(d.value); })
// .attr("y", function(d) { return y(d.value); })
// // .on('mouseover', tip.show)
// // .on('mouseout', tip.hide)
};
//Watch 'data' and run scope.render(newVal) whenever it changes
//Use true for 'objectEquality' property so comparisons are done on equality and not reference
scope.$watch('data', function(){
scope.render(scope.data);
}, true);
}
};
}
])
.controller('Ctrl', function($scope, $http) {
var currentDate,
weekStart,
weekEnd,
shortWeekFormat = 'MMMM Do';
$scope.currentWeekStart;
$scope.currentWeekEnd;
function setCurrentDate(aMoment){
currentDate = aMoment,
weekStart = currentDate.clone().startOf('week'),
weekEnd = currentDate.clone().endOf('week')
}
setCurrentDate(moment());
$scope.currentWeekStart = function(){ return weekStart.format(shortWeekFormat); };
$scope.currentWeekEnd = function(){ return weekEnd.format(shortWeekFormat); };
$scope.week = function(item) {
var eventTime = moment(item.name);
return (eventTime >= weekStart && eventTime <= weekEnd);
};
var data = [
{name: moment('May 29 2016'), value: 300},
{name: moment('May 30 2016'), value: 150},
{name: moment('May 31 2016'), value: 400},
{name: moment('Jun 1 2016'), value: 300},
{name: moment('Jun 2 2016'), value: 100},
{name: moment('Jun 3 2016'), value: 300},
{name: moment('Jun 4 2016'), value: 150},
{name: moment('Jun 5 2016'), value: 300},
{name: moment('Jun 6 2016'), value: 150},
{name: moment('Jun 7 2016'), value: 400},
{name: moment('Jun 8 2016'), value: 300},
{name: moment('Jun 9 2016'), value: 100},
{name: moment('Jun 10 2016'), value: 300},
{name: moment('Jun 11 2016'), value: 150},
{name: moment('Jun 12 2016'), value: 400},
{name: moment('Jun 13 2016'), value: 300},
{name: moment('Jun 14 2016'), value: 100},
{name: moment('Jun 15 2016'), value: 400},
{name: moment('Jun 16 2016'), value: 300},
{name: moment('Jun 17 2016'), value: 100},
{name: moment('Jun 18 2016'), value: 100}
];
var beginValue = weekStart._d;
var endValue = weekEnd._d;
$scope.myData = data.filter(function(d){
return d.name >= beginValue && d.name <= endValue;
});
$scope.nextWeek = function(){
var next = setCurrentDate(currentDate.add(7,'days'));
next = currentDate;
beginValue = weekStart._d;
endValue = weekEnd._d;
$scope.myData = data.filter(function(d){
return d.name >= beginValue && d.name <= endValue;
});
$scope.$watch('myData', function(){
$scope.render($scope.myData);
}, true);
console.log($scope.myData)
};
$scope.prevWeek = function(){
var prev = setCurrentDate(currentDate.subtract(7,'days'));
prev = currentDate;
//console.log(weekStart)
//console.log(weekEnd)
$scope.myData = data.filter(function(d){
return d.name >= weekStart._d && d.name <= weekEnd._d;
});
// console.log($scope.myData)
};
});
我无法根据所选日期更改条形图值。
我是D3js的新手，我不确定我做错了什么。
请让我知道你的想法。
答案 0 :(得分：0)
您无法正确处理enter，update和exit pattern。您的代码应如下所示：
// join the data
var bars = svg.selectAll(".bar").data(data);
// any bars that no longer exist should be removed
bars.exit().remove();
// new bars should be created
bars.enter()
.append("rect")
.attr("class", "bar")
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
// all bars need to have new x positions, width and height
bars
.attr("x", function(d) {
return x(d.name);
})
.attr("width", x.rangeBand())
.attr('height', function(d) {
return height - y(d.value);
})
.attr("y", function(d) {
return y(d.value);
});
更新了Plunker here。